Clinical and Radiologic Outcomes of Partial Lateral Patellar Facetectomy in Total Knee Arthroplasty
J Knee SurgDOI: 10.1055/s-0036-1584186Recently, some authors have performed partial lateral patellar facetectomy in total knee arthroplasty (TKA) and reported good results. However, research on partial lateral patellar facetectomy in TKA is still lacking. The aim of this study was to evaluate the clinical and radiologic results of partial lateral patellar facetectomies in patellar non-resurfacing and resurfacing TKAs. Total 251 TKAs (patellar non-resurfacing: 131; resurfacing: 120) that were followed up for at least 24 months to evaluate the clinical and radiologic results of partial lateral patellar facetectomies in patel...
Source: Journal of Knee Surgery - May 20, 2016 Category: Orthopaedics Authors: Kim, Chang-WanLee, Chang-RackSeo, Seung-SukGwak, Heui-ChulKim, Jung-HanPark, Joon-Ho Tags: Original Article Source Type: research

Incidence of Soft-Tissue Injuries in Patients with Posterolateral Tibial Plateau Fractures: A Retrospective Review from 2009 to 2014
Conclusion Posterolateral tibial plateau fractures were associated with a high incidence of soft-tissue injuries, especially ACL footprint avulsions and lateral meniscus tears. The preoperative MRI examination was important for surgeons to decide whether the ligament and meniscal injuries should be treated simultaneously with the repair of the bone fractures.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - May 16, 2016 Category: Orthopaedics Authors: Wang, YanqingCao, FujiangLiu, MinghuiWang, JiantaoJia, Shikong Tags: Original Article Source Type: research

Effect of Topical and Intravenously Applied Tranexamic Acid Compared to Control Group on Bleeding in Primary Unilateral Total Knee Arthroplasty
J Knee SurgDOI: 10.1055/s-0036-1583270 Purpose We aimed to answer the following three questions in this study: (1) Does tranexamic acid (TA) reduce the amount of bleeding in total knee arthroplasty (TKA)? (2) Does TA reduce requirement for blood transfusion? (3) Is there any difference on reliability and efficacy between topical and intravenous (IV) applications of TA? Methods Patients were allocated into three groups randomly by a software program as topical, IV, and control group. TA was applied as 20 mg/kg to the IV group and as 3 g/100 mL saline to the topical group. The hemoglobin values were rec...
Source: Journal of Knee Surgery - May 2, 2016 Category: Orthopaedics Authors: Uğurlu, MahmutAksekili, Mehmet Atıf ErolÇağlar, CeyhunYüksel, KağanŞahin, ErcanAkyol, Mesut Tags: Original Article Source Type: research

Complex Topics in Knee Dislocations
J Knee Surg 2016; 29: 267-268DOI: 10.1055/s-0036-1583308Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - April 29, 2016 Category: Orthopaedics Authors: Fanelli, Gregory C. Tags: Foreword Source Type: research

A Cadaveric Analysis of the Optimal Radiographic Angle for Evaluating Trochlear Depth
Discussion These results suggest that the optimal beam–femur angle for visualizing maximum trochlear depth is 50 degrees. This is significantly lower than the beam–femur angle of 90 degrees typically used in the sunrise projection. Clinicians evaluating trochlear depth on sunrise projections may be underestimating maximal depth and evaluating a nonarticulating portion of the femur.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - April 28, 2016 Category: Orthopaedics Authors: Weinberg, Douglas StanleyGilmore, AllisonGuraya, Sahejmeet S.Wang, David M.Liu, Raymond W. Tags: Original Article Source Type: research

Comparison of Synovial Fluid Cytokine Levels between Traumatic Knee Injury and End-Stage Osteoarthritis
J Knee SurgDOI: 10.1055/s-0036-1583269 Background Degenerative osteoarthritis (OA) has been associated with elevated synovial fluid cytokines. It is unclear whether traumatic knee injuries are a trigger to the chemical process that leads to OA. The purpose of this study was to compare the synovial fluid cytokine levels between knees undergoing arthroscopy due to a documented inciting injury and knees undergoing primary arthroplasty due to end-stage OA without a previous inciting injury. Methods Synovial fluid samples were prospectively collected from knees undergoing arthroscopic surgeries due to liga...
Source: Journal of Knee Surgery - April 28, 2016 Category: Orthopaedics Authors: Siqueira, Marcelo B. P.Frangiamore, SalvatoreKlika, Alison K.Gajewski, NicholasBarsoum, Wael K.Higuera, Carlos A. Tags: Original Article Source Type: research

Efficacy of Pulsed Radiofrequency Therapy to Dorsal Root Ganglion Adding to TENS and Exercise for Persistent Pain after Total Knee Arthroplasty
This study aimed to assess the efficacy of transcutaneous electrical nerve stimulation (TENS), exercise, and pulsed radiofrequency (PRF) treatment on pain severity, neuropathic pain, knee flexion range of motion (ROM), functional status, and patient satisfaction in patients with PPSP after TKA. This is a retrospective study of prospectively collected data. Patients who were identified retrospectively from hospital charts were divided into two groups: group 1 (n = 17) received TENS and exercise treatment and group 2 (n = 22) received TENS, exercise, and PRF application to the dorsal root ganglion...
Source: Journal of Knee Surgery - April 28, 2016 Category: Orthopaedics Authors: Albayrak, IlknurApiliogullari, SezaDal, Cagatay NusretLevendoglu, FundaOzerbil, Onder Murat Tags: Original Article Source Type: research

Diagnosis and Treatment of Anterior Tibial Plateau Fracture –Dislocation: A Case Series and Literature Review
This study was aimed at introducing a type of severe anterior tibial plateau fracture (anterior tibial plateau fracture–dislocation) and evaluating its clinical characteristics and treatment strategies. In this study, 18 patients with severe anterior tibial plateau fracture (study group) were enrolled between November 2006 and August 2014, and their data were compared with those of 21 patients treated for normal Schatzker type VI tibial plateau fracture (control group) between January 2010 and August 2014. At the last follow-up, bony union had been achieved in both groups. The incidence of ligament injury was higher ...
Source: Journal of Knee Surgery - April 27, 2016 Category: Orthopaedics Authors: Wu, Kai Huang, Jianhua Lin, Jian Wang, Qiugen Tags: Original Article Source Type: research

Diagnosis and Treatment of Anterior Tibial Plateau Fracture–Dislocation: A Case Series and Literature Review
This study was aimed at introducing a type of severe anterior tibial plateau fracture (anterior tibial plateau fracture–dislocation) and evaluating its clinical characteristics and treatment strategies. In this study, 18 patients with severe anterior tibial plateau fracture (study group) were enrolled between November 2006 and August 2014, and their data were compared with those of 21 patients treated for normal Schatzker type VI tibial plateau fracture (control group) between January 2010 and August 2014. At the last follow-up, bony union had been achieved in both groups. The incidence of ligament injury was higher ...
Source: Journal of Knee Surgery - April 27, 2016 Category: Orthopaedics Authors: Wu, KaiHuang, JianhuaLin, JianWang, Qiugen Tags: Original Article Source Type: research

Optimizing Graft Placement in Anterior Cruciate Ligament Reconstruction: A Finite Element Analysis
J Knee SurgDOI: 10.1055/s-0036-1581137Femoral anterior cruciate ligament (ACL) graft malposition may lead to clinical instability and graft failure. The purpose of this study was to evaluate the effect of ACL graft placement on global knee biomechanics using finite element (FE) analysis. An established nonlinear contact FE model was used to evaluate 25 distinct tunnel loci representing primary ACL reconstructions; knee flexion and a simulated Lachman maneuver was used to assess knee joint laxity, meniscal stress, in situ graft loading, and peak articular cartilage contact pressure for each of the tunnel positions. Increase...
Source: Journal of Knee Surgery - April 27, 2016 Category: Orthopaedics Authors: Westermann, Robert W.Wolf, Brian R.Elkins, Jacob Tags: Original Article Source Type: research

Liposomal Bupivacaine Injection Technique in Total Knee Arthroplasty
Conclusion Use of the manufacturer-recommended technique for PAI of liposomal bupivacaine does not offer benefit over a conventional, less expensive PAI during TKA.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - April 27, 2016 Category: Orthopaedics Authors: Meneghini, R. MichaelBagsby, DerenIreland, Philip H.Ziemba-Davis, MaryLovro, Luke R. Tags: Original Article Source Type: research

Influences of Tumor Necrosis Factor –α on Lysyl Oxidases and Matrix Metalloproteinases of Injured Anterior Cruciate Ligament and Medial Collateral Ligament Fibroblasts
Conclusions The differential expression of LOXs and MMPs between the injured ACL and MCL fibroblasts in this study may help explain the healing abilities of the two different ligaments.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - April 18, 2016 Category: Orthopaedics Authors: Cai, Linyi An, Shu Liao, Jinfeng Yang, Wenbin Zhou, Xuedong Sung, KL Paul Xie, Jing Tags: Original Article Source Type: research

Fracture Dislocation of the Knee
This article describes a treatment algorithm for this injury that begins with making the correct diagnosis and continues through a staged treatment protocol. Results of 27 patients who were treated using this protocol are reported, demonstrating that good results can be obtained. There is a high incidence of complications associated with this injury, but patient outcomes are still good if they are recognized and treated appropriately.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Sou...
Source: Journal of Knee Surgery - April 18, 2016 Category: Orthopaedics Authors: Stannard, James Tags: Special Focus Section Source Type: research

Influences of Tumor Necrosis Factor–α on Lysyl Oxidases and Matrix Metalloproteinases of Injured Anterior Cruciate Ligament and Medial Collateral Ligament Fibroblasts
Conclusions The differential expression of LOXs and MMPs between the injured ACL and MCL fibroblasts in this study may help explain the healing abilities of the two different ligaments.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - April 18, 2016 Category: Orthopaedics Authors: Cai, LinyiAn, ShuLiao, JinfengYang, WenbinZhou, XuedongSung, KL PaulXie, Jing Tags: Original Research Source Type: research

The Mediolateral Excursion of the Meniscal Bearing during Flexion and Extension of the Knee after Medial Mobile-Bearing Unicompartmental Knee Arthroplasty
J Knee SurgDOI: 10.1055/s-0036-1581134This mediolateral excursion of the bearing during knee motion is supposed to be caused by external rotation of the tibia during knee extension. However, to our knowledge, there is no published clinical evidence supporting these hypotheses. The current study aimed to evaluate the mediolateral excursion of the bearing during flexion-extension motion of the knee after medial unicompartmental knee arthroplasty (UKA). In 52 knees, varus/valgus (F-VarVal) or rotational position (F-Rot) of the femoral component and relative location of the bearing were measured with the standing anteroposteri...
Source: Journal of Knee Surgery - April 18, 2016 Category: Orthopaedics Authors: Lee, Seung-YupBae, Ji-HoonSuh, Dong-WonKim, Han-JuLim, Hong-Chul Tags: Original Article Source Type: research

Thrombin-Based Hemostatic Agent in Primary Total Knee Arthroplasty
J Knee SurgDOI: 10.1055/s-0036-1582137The present meta-analysis pooled the results from randomized controlled trials (RCTs) to identify and assess the efficacy and safety of thrombin-based hemostatic agent in primary total knee arthroplasty (TKA). Potential academic articles were identified from the Cochrane Library, Medline (1966-2015.5), PubMed (1966-2015.5), Embase (1980-2015.5), and ScienceDirect (1966-2015.5). Relevant journals and the recommendations of expert panels were also searched by using Google search engine. RCTs assessing the efficacy and safety of thrombin-based hemostatic agent in primary TKA were included...
Source: Journal of Knee Surgery - April 18, 2016 Category: Orthopaedics Authors: Fu, XinTian, PengXu, Gui-JunSun, Xiao-LeiMa, Xin-Long Tags: Original Article Source Type: research

Rehabilitation and Pain Management Modalities in Total Knee Arthroplasty
J Knee Surg 2016; 29: 179-179DOI: 10.1055/s-0036-1580606Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - March 29, 2016 Category: Orthopaedics Authors: Chughtai, MoradElmallah, Randa K.Cherian, Jeffrey JaiMistry, Jaydev B.Harwin, Steven F.Mont, Michael A. Tags: Foreword Source Type: research

Reconstruction with β-Tricalcium Phosphate for Giant Cell Tumor of Bone around the Knee
J Knee SurgDOI: 10.1055/s-0036-1579789Giant cell tumor of bone is a locally aggressive metaphyseal lesion extending to the epiphysis, mostly occurring around the knee joint. Reconstruction to preserve the joint is difficult when there is little subarticular bone. Four such cases with a giant cell tumor of bone around the knee joint were treated by curettage and reconstruction using β-tricalcium phosphate (β-TCP). Block-shaped β-TCP with high mechanical strength (hard-type β-TCP) was implanted into the cavity, while standard β-TCP particles were put into the subarticular space. Exercise to promote i...
Source: Journal of Knee Surgery - March 28, 2016 Category: Orthopaedics Authors: Sakamoto, Akio Tags: Original Article Source Type: research

Effect of Two Limb Positions on Venous Hemodynamics and Hidden Blood Loss following Total Knee Arthroplasty
This study assessed the effects of limb position on venous hemodynamics and blood loss after primary total knee arthroplasty (TKA). First, the venous blood flow velocity was detected by color Doppler flow imaging in seven young volunteers after the leg was elevated 25 cm with the knee in full extension or mild flexion. Next, 108 consecutive TKA patients were randomized into flexion or extension groups. Both groups had the leg elevated 25 cm at the ankle over a specific backing pad for 72 hours postoperatively. In the flexion group, the knee was flexed mildly (
Source: Journal of Knee Surgery - March 28, 2016 Category: Orthopaedics Authors: Li, BinWang, GuangbinWang, YanfangBai, Lunhao Tags: Original Article Source Type: research

Emerging Trends in Anterior Cruciate Ligament Reconstruction
J Knee SurgDOI: 10.1055/s-0036-1579788Anterior cruciate ligament (ACL) reconstruction is one of the most commonly performed and researched orthopedic procedures. As technology and comparative research have advanced, surgical practices have changed to achieve a superior outcome. Our group performed a survey of orthopedic surgeons to evaluate current practice trends and techniques as a follow-up to similar surveys performed in 1999 and 2006. In a survey between 2013 and 2014 consisting of 35 questions regarding the surgical technique, graft choice, fixation method, and perioperative care in ACL reconstruction was sent electr...
Source: Journal of Knee Surgery - March 28, 2016 Category: Orthopaedics Authors: Budny, JacobFox, JosephRauh, MichaelFineberg, Marc Tags: Original Article Source Type: research

Rehabilitative Guidelines after Total Knee Arthroplasty: A Review
J Knee SurgDOI: 10.1055/s-0036-1579670Rehabilitation following total knee arthroplasty (TKA) continues to pose a challenge for both patients and providers. In addition, guidelines vary considerably between institutions, which often leave therapy regimens to the discretion of the provider. The lack of clear guidelines for rehabilitation may contribute to inadequate recovery of strength and range-of-motion, resulting in less optimal functional outcomes. Therefore, the aim of this review was to highlight and discuss a variety of post-TKA rehabilitative modalities currently available and to provide evidence regarding efficacy ...
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Mistry, Jaydev B.Elmallah, Randa D. K.Bhave, AnilChughtai, MoradCherian, Jeffrey JaiMcGinn, TannerHarwin, Steven F.Mont, Michael A. Tags: Special Focus Section Source Type: research

Gait Using Pneumatic Brace for End-Stage Knee Osteoarthritis
J Knee SurgDOI: 10.1055/s-0036-1579790More than 20 million individuals in the United States are affected by knee osteoarthritis (OA), which can lead to altered biomechanics and excessive joint loading. The use of an unloader pneumatic brace with extension assist has been proposed as a nonoperative treatment modality that may improve gait mechanics and correct knee malalignment. We assessed the following parameters in patients who have knee OA treated with and without a brace: (1) changes in temporospatial parameters in gait; (2) knee range of motion, knee extension at heel strike, and foot placement; (3) knee joint moments...
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Kapadia, Bhaveen H.Cherian, Jeffrey JaiStarr, RolandChughtai, MoradMont, Michael A.Harwin, Steven F.Bhave, Anil Tags: Special Focus Section Source Type: research

Polyethylene Insert Exchange Is Crucial in Debridement for Acute Periprosthetic Infections following Total Knee Arthroplasty
This study aims to report our experience of managing acute periprosthetic joint infection (PJI) following total knee arthroplasty (TKA) with surgical debridement and prostheses retention. A review of patients in our prospective joint replacement register from 1998 to 2013 was performed. In this study, 34 patients with 35 TKAs were included; 25 were infections after primary TKA and 10 were after revision TKA. For primary TKA infections, after a mean follow-up of 53.8 ± 42.6 months, 11 were successfully treated, while 14 failed, including 10 required reoperations and 4 needed lifelong antibiotic suppress...
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Zhang, ChaofanYan, Chun HoiChan, Ping KeungNg, Fu YuenChiu, Kwong Yuen Tags: Original Article Source Type: research

The Impact of Prior Surgery after Total Knee Arthroplasty
This study supports the hypothesis that previous ipsilateral knee surgery is not associated with worse functional outcomes following primary TKA.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Rothermich, Marcus A.Nam, DenisBrophy, Rob H.Li, Kevin K.Barrack, Robert L.Nunley, Ryan M. Tags: Original Article Source Type: research

Arthroscopic Suture Pull-Out Fixation of Displaced Tibial Spine Avulsion Fracture
J Knee SurgDOI: 10.1055/s-0036-1579682 Purpose The aim of this study is to assess the clinical and radiological outcomes of arthroscopic reduction and fixation of tibial spine avulsion in patients with either open physis or closed physis, using high strength nonabsorbable sutures utilizing intravenous cannula needle as suture passer and retriever. Methods Twenty-six patients of mean age 24.5 years were included in the study with a mean follow-up period of 31 months. Twelve patients had McKeever type III avulsion fracture and 14 had type IV. A follow-up analysis was performed using fracture union time,...
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Pandey, VivekCPS, SumanAcharya, KiranRao, Sharath K. Tags: Original Article Source Type: research

Knee Arthroscopy in the Setting of Knee Arthroplasty
Conclusion Knee arthroscopy is a safe diagnostic and therapeutic tool in symptomatic knee arthroplasty with variable efficacy depending on indication. It has diagnostic utility in painful knee arthroplasty patients and is a reliable therapeutic option for those with post-arthroplasty diagnoses; although 20% of the patients go on to require further surgery. Level of Evidence IV This is a systematic review of level IV studies.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full tex...
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Heaven, Sebastiande SA, DarrenSimunovic, NicoleBedair, HanyNaudie, DouglasAyeni, Olufemi R. Tags: Original Article Source Type: research

Does Timing of Arthroscopic Partial Meniscectomy in Stable Knees Matter?
In conclusion, early APM for symptomatic irreparable tears in stable knees without preoperative arthrosis had better improvement in clinical results than in delayed intervention.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Haviv, BarakBronak, ShlomoKosashvili, YonaThein, Rafael Tags: Original Article Source Type: research

Combined Medial Patellofemoral Ligament Reconstruction and Tibial Tubercle Transfer Results at a Follow-Up of 2 years
J Knee SurgDOI: 10.1055/s-0036-1579665There is limited data on the effectiveness of combined medial patellofemoral ligament (MPFL) reconstruction and tibial tubercle transfer (TTT) in patients with patella instability. The aim of our study was to analyze the functional outcome in patients treated with MPFL reconstruction and TTT. Between July 2008 and April 2013, 18 patients (21 knees) underwent combined MPFL reconstruction and TTT; 15 patients (16 knees) with a mean age of 24 years (16–41) had a mean follow-up of 30 months (26–55). There was significant improvement in outcome scores in 12 out of 15 patients. K...
Source: Journal of Knee Surgery - March 10, 2016 Category: Orthopaedics Authors: Ahmad, RiazCalciu, MariusJayasekera, NarlakaSchranz, PeterMandalia, Vipul Tags: Original Article Source Type: research

Risk Factors Comparison for Radial and Horizontal Tears
J Knee SurgDOI: 10.1055/s-0036-1572415Tears in posterior horn of medial meniscus mainly included horizontal tear, transversal tear, radial tear, complex tear, and bucket handle tear. We analyzed and compared the risk factors for radial tear and horizontal tear in the posterior horn of medial meniscus. A total of 407 consecutive cases who received arthroscopic treatment of medial meniscus tears were analyzed retrospectively. Among them, 103 cases were radial tear in posterior horn of medial meniscus and 107 were horizontal tear. Clinical data records included patients' age, gender, duration of symptoms, body mass index, tra...
Source: Journal of Knee Surgery - February 23, 2016 Category: Orthopaedics Authors: Wu, JiangHuang, Jing-minZhao, BinCao, Jian-GangChen, Xiao Tags: Original Article Source Type: research

Influence of Posterior Cruciate Ligament Tension on Knee Kinematics and Kinetics
This study suggested ideal knee kinematics with proper PCL tension, in which the medial contact position at full flexion was almost similar to the position at 90 degrees of knee flexion.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - February 23, 2016 Category: Orthopaedics Authors: Shoifi Abubakar, MuhammadNakamura, ShinichiroKuriyama, ShinichiIto, HiromuIshikawa, MasahiroFuru, MoritoshiTanaka, YoshihisaMatsuda, Shuichi Tags: Original Article Source Type: research

3D Surgical Printing Cutting Guides for Open-Wedge High Tibial Osteotomy: Do It Yourself
We present a new “do-it-yourself” cutting guides system for tibial opening osteotomy. Using a conventional computed tomography digital image, a positioning guide and wedge spacers were printed in three dimensions (3D) for implementing the osteotomy and obtaining the planned correction. The surgeon makes the whole process in a do-it-yourself style. This new technique was used in eight cases. Previous opening osteotomies with the standard technique were used as control (20 cases). Surgical time, fluoroscopic time, and accuracy of the axial correction were measured. The use of a custom positioning guide reduced th...
Source: Journal of Knee Surgery - February 23, 2016 Category: Orthopaedics Authors: Pérez-Mañanes, RubénBurró, Juan ArnalManaute, Jose RojoRodriguez, Francisco ChanaMartín, Javier Vaquero Tags: Original Article Source Type: research

A Biomechanical Comparison of Isometric and Anatomic Medial Patellofemoral Ligament Reconstruction
J Knee SurgDOI: 10.1055/s-0036-1579619Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - February 19, 2016 Category: Orthopaedics Authors: Houdek, Christopher G.Esquivel, Amanda O.Cracchiolo, Allison M.Lemos, Stephen E. Tags: Erratum Source Type: research

Knee Dislocations and PCL-Based Multiligament Knee Injuries in Patients Aged 18 Years and Younger: Surgical Technique and Outcomes
This article will discuss patient age at the time of surgery, mechanisms of injury, surgical techniques, considerations in patients with open growth plates, a review of the literature, and the authors' surgical outcomes in these complex knee ligament instabilities.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - February 15, 2016 Category: Orthopaedics Authors: Fanelli, Gregory C.Fanelli, David G. Tags: Special Section Article Source Type: research

Open-Wedge High Tibial Osteotomy: RCT 2 Years RSA Follow-Up
J Knee SurgDOI: 10.1055/s-0036-1571802We investigated the influence of three different bone grafting materials on stability and clinical outcome of the healing open-wedge high tibial osteotomy (OW-HTO) with immediate partial weight bearing. A total of 45 (3 × 15) patients were randomized to injectable calcium phosphate cement (Calcibon; Biomet-Merck Biomaterials GmbH, Darmstadt, Germany), local bone autograft, or iliac crest autograft. Stability of the bony healing was evaluated with radiostereometric analysis (RSA) up to 24 months postoperatively. Clinical outcome was evaluated with the knee injury and...
Source: Journal of Knee Surgery - February 8, 2016 Category: Orthopaedics Authors: Lind-Hansen, Thomas BrunoLind, Martin CarøeNielsen, Poul TorbenLaursen, Mogens Berg Tags: Original Article Source Type: research

Biomechanics of the Knee
J Knee Surg 2016; 29: 091-091DOI: 10.1055/s-0035-1571259Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - February 8, 2016 Category: Orthopaedics Authors: Guess, Trent M.Cook, James L. Tags: Foreword Source Type: research

Liposomal Bupivacaine Suspension Can Reduce Lengths of Stay and Improve Discharge Status of Patients Undergoing Total Knee Arthroplasty
J Knee SurgDOI: 10.1055/s-0036-1571431The purpose of this study was to use a large hospital database to assess: (1) length of hospital stay (LOS) and (2) discharge status among patients undergoing total knee arthroplasty (TKA) with or without the use of a liposomal bupivacaine suspension injection. We utilized an all-payer hospital administrative database from July 1, 2013 to June 30, 2014. We then selected patients age 18 years or older who had an inpatient stay for TKA in the data window based on International Classification of Diseases, Ninth Revision (ICD-9) procedure codes (ICD-9-CM = 81.54), which resul...
Source: Journal of Knee Surgery - February 2, 2016 Category: Orthopaedics Authors: Chughtai, MoradCherian, Jeffrey JaiMistry, Jaydev B.Elmallah, Randa D. K.Bennett, AliciaMont, Michael A. Tags: Special Focus Section Source Type: research

Knee Dislocation in the Morbidly Obese Patient
This article presents a review of the existing literature on knee dislocations in the morbidly obese population, including diagnosis, management, and outcomes.[...]Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - February 2, 2016 Category: Orthopaedics Authors: Carr, James BradleyWerner, Brian ChristopherMiller, Mark D.Gwathmey, Frank Winston Tags: Special Focus Section Source Type: research

Analysis of Knee Joint Line Obliquity after High Tibial Osteotomy
J Knee SurgDOI: 10.1055/s-0036-1571430The aim of this study was to evaluate which lower extremity alignment (knee and ankle joint) parameters affect knee joint line obliquity (KJLO) in the coronal plane after open wedge high tibial osteotomy (OWHTO). Overall, 69 knees of patients that underwent OWHTO were evaluated using radiographs obtained preoperatively and from 6 weeks to 3 months postoperatively. We measured multiple parameters of knee and ankle joint alignment (hip-knee-ankle angle [HKA], joint line height [JLH], posterior tibial slope [PS], femoral condyle-tibial plateau angle [FCTP], medial proximal tibial angle [M...
Source: Journal of Knee Surgery - February 2, 2016 Category: Orthopaedics Authors: Oh, Kwang-JunKo, Young BongBae, Ji HoonYoon, Suk TaeKim, Jae Gyoon Tags: Original Article Source Type: research

Correlations between Navigation and Radiographic Measures of Alignment
This study was designed to compare the correlations between intraoperative navigation and radiographic alignment in patients who underwent total knee arthroplasty (TKA) and open wedge high tibial osteotomy (HTO). The reliability of navigation and radiographic alignment before and after surgery was compared in 82 prospectively enrolled patients who underwent open wedge HTO and 91 knees that underwent TKA. The absolute difference in preoperative mechanical axis (MA) between navigation and radiography was 1.1 degrees greater in the TKA than in the HTO group (2.6 vs. 1.5 degrees, p 
Source: Journal of Knee Surgery - February 2, 2016 Category: Orthopaedics Authors: Han, Seung-BeomLee, Dae-Hee Tags: Original Article Source Type: research

Effect of Age on Postoperative Outcomes Following Total Knee Arthroplasty
J Knee SurgDOI: 10.1055/s-0036-1571428The demand for total knee arthroplasty (TKA) continues to grow exponentially, and this has been attributed to a higher prevalence of osteoarthritis and excellent procedural success. In particular, with increasing life expectancies and obesity rates, surgeons are seeing patients with a wider age range. Therefore, we assessed the effects of patient age on: (1) range of motion (ROM); (2) pain and function; (3) physical and mental status; and (4) activity levels following TKA. We assessed 278 TKA patients (108 men, 170 women), with subdivision into three age-specific groups:
Source: Journal of Knee Surgery - February 2, 2016 Category: Orthopaedics Authors: Elmallah, Randa D. K.Jauregui, Julio J.Cherian, Jeffrey JaiPierce, Todd P.Harwin, Steven F.Mont, Michael A. Tags: Original Article Source Type: research

Evaluation of Knee Ligament Mechanics Using Computational Models
J Knee SurgDOI: 10.1055/s-0036-1571954The steady maturation of computational biomechanics is providing the musculoskeletal health community with exciting avenues for enhancing orthopedic practice and rehabilitation. Computational knee models deliver tools that may improve the efficiency and outcomes of orthopedic research and methods through analysis of virtual surgeries and devices. They also provide insight into the interaction of knee structures and can predict what cannot be directly measured such as loading on our cartilage and ligaments during movement. This project created subject-specific computational knee models ...
Source: Journal of Knee Surgery - January 22, 2016 Category: Orthopaedics Authors: Guess, Trent M.Razu, SwithinJahandar, Hamidreza Tags: Special Focus Section Source Type: research

The Use of Finite Element Analysis to Enhance Research and Clinical Practice in Orthopedics
The objectives of this work are to introduce the reader to the application of FEA in orthopedic analysis of the knee joint. A brief description of the model development process as well as a specific application to the investigation of knee joint stability in geometries with normal or compromised medial meniscal attachment is included. Significant increases in stretch of the anterior cruciate ligament were predicted in specimens with medial meniscus insufficiency (such behavior was confirmed in corresponding biomechanical testing). It can be concluded from this work that FE analysis of the knee can provide significant new i...
Source: Journal of Knee Surgery - January 8, 2016 Category: Orthopaedics Authors: Pfeiffer, Ferris M. Tags: Special Focus Section Source Type: research

The Relationship between Body Mass Index and Risk of Failure following Meniscus Repair
J Knee SurgDOI: 10.1055/s-0035-1569480It is unknown whether body mass index (BMI) influences outcomes of meniscus repair. We hypothesized that increased BMI would be associated with increased risk of failure. A retrospective study was performed involving patients who had undergone meniscus repair between 2008 and 2012. Chart review and phone interviews were conducted to determine which patients required additional surgery. Patients were categorized as normal BMI (
Source: Journal of Knee Surgery - January 4, 2016 Category: Orthopaedics Authors: Sommerfeldt, Mark F.Magnussen, Robert A.Randall, Kyle L.Tompkins, MarcPerkins, BryanSharma, AvijitBlackwell, RyanFlanigan, David C. Tags: Original Article Source Type: research

Posterior Column Tibial Plateau Fractures
J Knee Surg 2016; 29: 001-001DOI: 10.1055/s-0035-1570401Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals:Table of contents  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - December 31, 2015 Category: Orthopaedics Authors: Karunakar, Madhav A. Tags: Foreword Source Type: research

Radiographic and Anatomic Evaluation of Tibial Tubercle to Trochlear Groove Distance
Conclusions TT-TG distance measured on CT is comparable to measurements from dissections in both full extension and 90-degree flexion. Tibial rotation has a significant effect on TT-TG measurements. Radiographic measurements did not correlate with CT and anatomic measurements. Clinical Relevance CT-derived TT-TG measurements are accurate throughout knee range of motion; however, it is important to maintain neutral lower leg rotation to not generate a false-positive or false-negative measurement. Radiographic measurement of TT-TG ration is not currently recommended.[...]Thieme Medical Publishers 333 Seventh ...
Source: Journal of Knee Surgery - December 30, 2015 Category: Orthopaedics Authors: Worden, AliciaKaar, ScottOwen, JoshuaCutuk, Adnan Tags: Original Article Source Type: research

Inside-Out or Outside-In Suturing Should Not Be Considered the Standard Repair Method for Radial Tears of the Midbody of the Lateral Meniscus: A Systematic Review and Meta-Analysis of Biomechanical Studies
J Knee SurgDOI: 10.1055/s-0035-1570113The purpose was to evaluate which meniscal repair technique for radial tears of the midbody of the lateral meniscus demonstrates the best biomechanical properties. An electronic literature search was conducted using PubMed, EMBASE, CINAHL, and ScienceDirect databases. Biomechanical studies investigating the repair characteristics of radial tears in the midbody of the lateral meniscus were included. After appropriate screening, a total of 54 studies were reviewed in detail (full text), and 6 met inclusion criteria. The most common cause of exclusion was the investigation of longitudinal...
Source: Journal of Knee Surgery - December 30, 2015 Category: Orthopaedics Authors: Alentorn-Geli, EduardChoi, J. H. JamesStuart, Joseph J.Toth, Alison P.Garrett, William E.Taylor, Dean C.Moorman, Claude T. Tags: Original Article Source Type: research

A Novel, Nonoperative Treatment Demonstrates Success for Stiff Total Knee Arthroplasty after Failure of Conventional Therapy
This study evaluates the effects of Astym therapy upon (1) range of motion and (2) subjective functional improvements in post-TKA patients who suffered from stiffness recalcitrant to other nonoperative interventions. Methods Twenty-three post-TKA patients (29 knees) who had recalcitrant knee stiffness were included in this study. Pre- and post-Astym improvements in range of motion and Knee Society scores were compared. We analyzed knees based on the presence of flexion deficit or contracture. Further stratification was made into knees that received Astym therapy before and after a 3-month period of standard reha...
Source: Journal of Knee Surgery - December 29, 2015 Category: Orthopaedics Authors: Chughtai, MoradMont, Michael A.Cherian, ChrisCherian, Jeffrey JaiElmallah, Randa D. K.Naziri, QaisHarwin, Steven F.Bhave, Anil Tags: Special Focus Section Source Type: research

Liposomal Bupivacaine in Total Knee Arthroplasty for Better Postoperative Analgesic Outcome and Economic Benefits
J Knee SurgDOI: 10.1055/s-0035-1570369When orthopedists consider which analgesia to use after total knee arthroplasty (TKA), the primary objective is to relieve pain with fewer adverse side effects. Over the last decade, substantial efforts have been made to improve pain control following TKA, but it is still very challenging to obtain optimal control. Current modalities in use, such as opioids, epidurals, and nerve blocks, provide substantial pain relief, but they are associated with substantial side effects and serious complications. Recently, bupivacaine, a commonly used nonopioid analgesic, has been formulated into an ...
Source: Journal of Knee Surgery - December 29, 2015 Category: Orthopaedics Authors: Cherian, Jeffrey JaiMuzaffar, AliBarrington, John W.Elmallah, Randa D.K.Chughtai, MoradMistry, Jaydev B.Mont, Michael A. Tags: Special Focus Section Source Type: research

Acute Management of Anterior Cruciate Ligament Injuries Using Novel Canine Models
The objective of this study was to compare treatment options for acute management of anterior cruciate ligament (ACL) injuries using preclinical models. Twenty-seven adult purpose-bred research hounds underwent knee surgery (sham control, exposed ACL, or partial-tear ACL) and were assessed over the following 8 weeks. Dogs were randomized into three treatment groups: standard of care (i.e., rest and nonsteroidal anti-inflammatory drugs [NSAIDs]), washout, or leukoreduced platelet-rich plasma (PRP) so that a total of nine dogs received each treatment. Data from the two ACL-injury groups were pooled for each treatment (n&thin...
Source: Journal of Knee Surgery - December 29, 2015 Category: Orthopaedics Authors: Bozynski, Chantelle C.Stannard, James P.Smith, PatHanypsiak, Bryan T.Kuroki, KeiichiStoker, AaronCook, CristiCook, James L. Tags: Original Article Source Type: research

Treatment of Peroneal Nerve Injuries in the Multiligament Injured/Dislocated Knee
J Knee SurgDOI: 10.1055/s-0035-1570019Tibiofemoral knee dislocations are typically a consequence of high-energy mechanisms, causing significant damage to the soft tissue and osseous structures of the knee. Concomitant neurovascular injuries such as popliteal artery and peroneal nerve injuries are also common and can have significant long-term consequences. The mechanism typically involves a traction injury to the peroneal nerve subsequent to an extreme varus moment applied to the knee. Complete nerve injuries typically hold a worse prognosis than incomplete palsies. Rates of functional recovery in the setting of a complete...
Source: Journal of Knee Surgery - December 18, 2015 Category: Orthopaedics Authors: O'Malley, Michael P.Pareek, AyooshReardon, PatrickKrych, AaronStuart, Michael J.Levy, Bruce A. Tags: Special Focus Section Source Type: research