Corrigendum to “The relationship between lateral epicondyle morphology and iliotibial band friction syndrome: A matched case–control study [The Knee 26 (2019) 1198–1203]”
The authors regret an error in the authorship list. This should appear as per above. The authors apologise for any inconvenience that has caused. (Source: The Knee)
Source: The Knee - June 30, 2020 Category: Orthopaedics Authors: Joshua S. Everhart, James C. Kirven, John Higgins, Andrew Hair, Ajit M.W. Chaudhari, David C. Flanigan Source Type: research

Gait deviations and muscle strength deficits in subjects with patellar instability
Abnormal tracking of the patella is a hallmark sign of patellar instability (PI). Gait deviations and strength deficits may exacerbate abnormal tracking. The identification of modifiable gait deviations and strength deficits can aid in developing more effective management strategies for individuals with PI. The purpose of this study was to identify modifiable gait and strength deficits in subjects with PI. (Source: The Knee)
Source: The Knee - June 23, 2020 Category: Orthopaedics Authors: Kathryn C. Hickey Lucas, Cale Jacobs, Christian Lattermann, Brian Noehren Source Type: research

Temporary hemiepiphysiodesis for correcting idiopathic and pathologic deformities of the knee: A retrospective analysis of 355 cases
Hemiepiphysiodesis is a well-established treatment option in cases of pathologic deformities and leg discrepancies during evolution. The aim of this study was to evaluate the postoperative angular measurement, correction correlated with age at operation time, and postoperative complication rate. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Kerstin Radtke, Fabian Goede, Katharina Schweidtmann, Tanja Schwamberger, Tilman Calliess, Bastian Fregien, Christina Stukenborg-Colsman, Max Ettinger Source Type: research

Medial closing-wedge distal femoral varus osteotomy: Symptoms and functional impact in cases of associated patellofemoral osteoarthritis. A two-year follow-up prospective pilot study
To date, indications for distal femoral varus osteotomy (FVO) in cases of associated patellofemoral osteoarthritis (PFO) have yet to be clarified. The purpose of this prospective study is to assess the short-term symptoms, functional and radiological impact of a medial closing-wedge femoral varus osteotomy on the patellofemoral joint in patients with valgus deformities who are afflicted with lateral tibiofemoral osteoarthritis (LTFO) associated with PFO. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: T. Barnavon, G.A. Odri, T. Vendeuvre, O. Labrada-Blanco, M. Bordes, G. Renard, J.L. Rouvillain, M. Severyns Source Type: research

Centralized anterior bone plug results in less graft extrusion in patients undergoing medial meniscus allograft transplantation following anterior cruciate ligament reconstruction
This study was performed to analyze the effect of anterior bone plug positioning on clinical and radiological outcomes in patients undergoing medial meniscus allograft transplantation (M-MAT) following anterior cruciate ligament reconstruction (ACLR). (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Kyoung Ho Yoon, Hyun Woo Lee, Soo Yeon Park, Jung-Suk Kim, Jae-Young Park Source Type: research

A finite element analysis of tibial tritanium cones without stems in varying bone defects
In the UK around 10% of hip and knee arthroplasties are revision operations. At revision total knee arthroplasty (rTKA), bone loss management is critical to achieving a stable bone-implant construct. Though tritanium cones have been used to manage bone defects in rTKA, their biomechanical performance with varying defects remains unknown. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Shuqiao Xie, Noel Conlisk, David Hamilton, Chloe Scott, Richard Burnett, Pankaj Pankaj Source Type: research

Is it safe for patients to drive after intra-articular knee injection?
This study examines brake response times (BRTs) before and after intra-articular knee injection. Our hypothesis is that BRTs would not significantly differ and thus patients driving ability/safety is unaffected. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: J. Tristan Cassidy, A. McClean, E.T. Hurley, J.P. Cashman Source Type: research

Interobserver agreement of sensor-derived compartmental pressure measurements in computer-assisted total knee arthroplasty
Sensor-guided compartmental pressure measurements are becoming increasingly utilized in total knee arthroplasty (TKA) to objectively confirm intraoperative knee balance. We aimed to determine agreement of pressure measurements between two observers when performing sensor-guided TKA with the use of computer-assisted surgery (CAS). (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Kristen Thompson, Will Griffiths-Jones, Lisa Frendin, Jil Wood, Ian A. Harris, Darren B. Chen, Samuel J. MacDessi Source Type: research

Predictors of a change in patient willingness to have Total knee arthroplasty: Insights from the osteoarthritis initiative
The objective of this research is to identify predictors of change in patient willingness to have total knee arthroplasty (TKA). (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Ilya Bendich, Ryan T. Halvorson, Derek Ward, Michael Nevitt Source Type: research

Wiberg Type III patellae and J-sign during extension compromise outcomes of total knee arthroplasty without patellar resurfacing
Understanding the risk factors associated with postoperative pain and worse outcome can guide surgeons on whether primary patellar resurfacing is warranted during total knee arthroplasty (TKA). The purpose of this study was to determine whether clinical scores and pain after TKA without patellar resurfacing are correlated with patellar shape and postoperative patellar position and kinematics. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Micha ël Butnaru, Guillaume Sigonney, Jacobus H. Müller, Antoine Senioris, Mo Saffarini, Olivier Courage Source Type: research

Predicting self-reported functional improvement one year after primary total knee arthroplasty using pre- and postoperative patient-reported outcome measures
This study aims to assess which patient-related and clinical determinants at baseline and six months postoperative can predict lack of self-reported functional improvement at 12  months after primary TKA. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Lieke C.M. Vissers, Ruud P. van Hove, Babette C. van der Zwaard Source Type: research

Percutaneous ultrasonic tenotomy effectively debrides tendons of the extensor mechanism of the knee: A technical note
Percutaneous ultrasonic tenotomy (PUT) is a minimally-invasive method of treating patellar tendinosis, but its immediate effect on tendon structure has never been studied. Given the crucial nature of the extensor mechanism of the knee, it is important to understand the procedure's effect on tendon structure prior to clinical implementation. The aim of this study was to analyze the tendon structure of the extensor mechanism of the knee after PUT in a cadaveric model. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Michael R. Baria, W. Kelton Vasileff, Meghan Miller, James Borchers, Timothy L. Miller, Robert A. Magnussen, Sushmitha S. Durgam Tags: Novel techniques Source Type: research

Peri-prosthetic bone mineral density after simultaneous bilateral total knee arthroplasty under oral bisphosphonate therapy — A comparison between mobile- and fixed-bearing prostheses
Peri-prosthetic bone mineral density (BMD) decreases after total knee arthroplasty (TKA). We aimed to specifically compare peri-prosthetic BMD changes between mobile- and fixed-bearing prostheses in patients undergoing oral bisphosphonate therapy, hypothesizing that mobile-bearing components would have a favorable effect on postoperative peri-prosthetic BMD. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Hideki Ueyama, Yukihide Minoda, Ryo Sugama, Yoichi Ohta, Suguru Nakamura, Susumu Takemura, Hiroaki Nakamura Source Type: research

Development of heterotopic ossification after multiple-ligament reconstruction of the knee joint: Incidence and explanatory factor analysis
The development of heterotopic ossification (HO) might nullify any benefit of multiple-ligament reconstruction of the knee joint. The purpose of this study was to investigate the incidence and the specific explanatory factors for the development of HO after multiple-ligament reconstruction of the knee joint. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Jin Zhang, Guan-Yang Song, Hua Feng Source Type: research

Kellgren –Lawrence grade of osteoarthritis is associated with change in certain morphological parameters
To compare selected morphological parameters between normal and osteoarthritic (OA) knees, as well as to evaluate differences in these parameters between Kellgren –Lawrence (K-L) grades of OA. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Abdulhamit Misir, Kadir Ilker Yildiz, Turan Bilge Kizkapan, Mustafa Alper Incesoy Source Type: research

Knee arthroplasty system with medialized keel: Seven-year follow-up of a pioneer cohort
In this clinical investigation, a new design with a progressive increased keel medialization according to the size was implanted. The cohort of patients was followed up for seven years. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: F. Benazzo, E. Jannelli, A. Ivone, M. Formagnana, S.M. Rossi, M. Ghiara, G. Danesino, M. Mosconi Source Type: research

Comparative analysis of gene expression between articular cartilage-derived cells to assess suitability of fibronectin adhesion assay to enrich chondroprogenitors
Enhanced chondrogenesis and reduction in hypertrophy are essential pre-requisites for cell-based therapy in regenerative research for cartilage loss. Chondroprogenitors, isolated by fibronectin adhesion assay (FAA), have shown promising results in various preclinical studies due to their inherent characteristics. However, the need for monolayer culture and the effect of expansion on cell phenotype render differentiation between chondroprogenitors and chondrocytes (native cartilage cells) difficult. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Upasana Kachroo, Elizabeth Vinod Source Type: research

New standardization method of tibial tubercle-posterior cruciate ligament distance according to patient size in patients with patellofemoral instability
This study aimed to clarify the relationship between TT-PCL distance and patient size, and to determine a method for describing individualized TT lateralization. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Yasunari Ikuta, Masakazu Ishikawa, Norifumi Suga, Atsuo Nakamae, Tomoyuki Nakasa, Nobuo Adachi Source Type: research

Suture configuration techniques have no effect on mid-term clinical outcomes of arthroscopic meniscus root repairs
The aim of this study was to evaluate the clinical and radiological outcomes of arthroscopic transtibial pullout repair (ATPR) for the medial meniscus with both two modified loop stitches (TLS) and two simple stitches (TSS) techniques. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Tekin Kerem Ulku, Alper Kaya, Baris Kocaoglu Source Type: research

Changes in knee joint line orientation after high tibial osteotomy are the result of adaptation of the lower limb to the new alignment
Changes in knee joint line orientation (KJLO) resulting in excessive joint line obliquity are a well-known consequence of high tibial osteotomy (HTO) procedures and could lead to degenerative changes. The precise effect of the correction on final KJLO changes is poorly understood. The goal of this study was to identify radiographical parameters that could help to explain the size of KJLO changes after HTO surgery. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Stijn Bartholomeeusen, Maxim Van den Bempt, Nathalie van Beek, Toon Claes, Steven Claes Source Type: research

Effects of lateral opening wedge and medial closing wedge distal femoral osteotomies on axial load stability
The stability of the current distal femoral osteotomy is insufficient for early weight bearing and bone healing. The purpose of this study was to test the stability of medial closing wedge- (MCW-) and lateral opening wedge-distal femoral osteotomies (LOW-DFO), which have improved with the recent advances in technology. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Hiroyasu Ogawa, Kazu Matsumoto, Haruhiko Akiyama Source Type: research

The development of the intercondylar notch in the pediatric population
Anterior cruciate ligament (ACL) repair is increasing in frequency in younger children. Recognition of the normal development of the intercondylar notch is important for successful ACL graft placement, allowing surgeons to better understand the anatomy and risk factors related to ACL tears and its reconstruction. The purpose of this study was to compile normative data on the intercondylar notch in the pediatric population with magnetic resonance imaging (MRI), emphasizing the differences between males and females. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Fernando M. Lima, Pedro Debieux, Andr é Y. Aihara, Fabiano N. Cardoso, Carlos Eduardo Franciozi, Alexandre Grimberg, Artur R.C. Fernandes Source Type: research

Clinical and electrophysiological assessment of injury to infrapatellar branch(es) of saphenous nerve during anterior cruciate ligament reconstruction using oblique incision for hamstring graft harvest: A prospective study
One of the complications of arthroscopic reconstruction of anterior cruciate ligament (ACL) using hamstring autograft is injury to the infrapatellar branch of the saphenous nerve (IPBSN) leading to loss of sensation around the knee. Its incidence varies according to the orientation of incision for hamstring graft harvest, with oblique incision having the lowest chance of this injury. Aim of this study was to assess clinically and electrophysiologically injury to IPBSN after ACL reconstruction using oblique incision for hamstring graft harvest. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Asjad Mahmood, Hira Nag, A.K. Srivastava Source Type: research

Spherical center and rotating platform hinged knee prosthesis: Finite-element model establishment, verification and contact analysis
Biomechanical study is fundamental for the preclinical evaluation of knee prostheses. However, there are few reports on the contact characteristic investigation in the hinged knee prosthesis. The purpose of this study was to investigate the contact characteristics of a novel hinged knee prosthesis. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Jing-Yu Zhang, Jian Wang, Dong-Mu Tian, Da-Ping Jiang, Jian-Jun Li, Yong-Cheng Hu Source Type: research

Comparison of the clinical outcomes of transtibial pull-out repair for medial meniscus posterior root tear: Two simple stitches versus modified Mason-Allen suture
Transtibial pullout repair of a medial meniscus posterior root tear (MMPRT) is a commonly used procedure, and several techniques have been reported. We hypothesised that pull-out repairs using two simple stitches (TSS) would have similar postoperative outcomes as those using the modified Mason-Allen suture with FasT-Fix (F-MMA). We aimed to investigate the clinical outcomes of these techniques, including the meniscal healing status and osteoarthritic change. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Takaaki Hiranaka, Takayuki Furumatsu, Shinichi Miyazawa, Yoshiki Okazaki, Yuki Okazaki, Shota Takihira, Yuya Kodama, Yusuke Kamatsuki, Shin Masuda, Taichi Saito, Toshifumi Ozaki Source Type: research

Total knee arthroplasty in achondroplasia without deformity correction: A case report with 11  years' follow-up
We report on a patient with 11  year's follow-up after a TKA performed maintaining bowleg alignment, using a posterior stabilized, fixed-bearing design. Sequential X-rays showed radiolucencies on the femoral component within two years postoperatively, slightly increasing over time but stable at last follow-up. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: Xavier Bayle-Iniguez, Gilles Udin, Matteo Regusci, Hermes H. Miozzari Tags: Case report Source Type: research

Contents List
(Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Source Type: research

Editorial Board
(Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Source Type: research

Attributing Priority to Elective Knee Operations/Patients during the re-introduction of Elective Care
(Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Source Type: research

Returning to elective surgery, the ‘new normal’
The Covid-19 pandemic has profoundly affected health-care services throughout the world. From the initial phase of treating those affected and displacing elective surgery, we now move to a transition phase of ‘the new normal’. Our health-care pathways have not returned to pre-pandemic practice and may never do so. We have instead gone through a profound period of change and reflection as to how patients are referred and risk assessed as well as how we manage their pre-operative and post-operative rec overy. (Source: The Knee)
Source: The Knee - June 1, 2020 Category: Orthopaedics Authors: C.B. Hing, O. Al-Dadah Tags: Editorial Source Type: research

Comparisons of patellar bone mineral density between individuals with and without patellofemoral pain
Although bone stress injuries have been reported in individuals with patellofemoral pain (PFP), especially within the lateral patella, it remains unclear whether persons with PFP exhibit altered patellar regional bone mineral density (BMD). The primary purpose of this study was to compare BMD of the patella (lateral, medial, and total regions) between individuals with and without PFP using quantitative computed tomography (QCT). The secondary aim was to examine the associations between patellar regional BMD and patellofemoral joint (PFJ) alignment. (Source: The Knee)
Source: The Knee - April 29, 2020 Category: Orthopaedics Authors: Kai-Yu Ho, Allina Cummins, Chris Khuu, Shane Parker, Steven Shepherd Source Type: research

The influence of obesity on clinical outcomes following primary total knee arthroplasty: A prospective cohort study
The aim of this study was to evaluate the influence of obesity on patients' function, pain, and complications following primary total knee arthroplasty (TKA) with an enhanced-recovery program. (Source: The Knee)
Source: The Knee - April 25, 2020 Category: Orthopaedics Authors: Haifeng Li, Sanjun Gu, Kerong Song, Yu Liu, Jian Wang, Jianbing Wang, Qudong Yin Source Type: research

The effect of kaempferol and apigenin on allogenic synovial membrane-derived stem cells therapy in knee osteoarthritic male rats
Based on the anti-inflammatory and anti-oxidant properties of kaempferol and apigenin, we hypothesized that co-injection of these phytochemicals would increase the effectiveness of cell therapy in knee osteoarthritic rats. (Source: The Knee)
Source: The Knee - April 23, 2020 Category: Orthopaedics Authors: Firoozeh Estakhri, Mohammad Reza Panjehshahin, Nader Tanideh, Rasoul Gheisari, Amir Mahmoodzadeh, Negar Azarpira, Nasser Gholijani Source Type: research

Radiographic deformities of the lower extremity in patients with spontaneous osteonecrosis of the knee
Spontaneous osteonecrosis of the knee (SONK) is one of the acute knee pain disorders arising in elderly patients. The presence of knee varus alignment and the size of necrotic area have been reported as the negative prognostic factors in prior studies. However, no previous study has yet clarified the radiological analysis of the lower extremity in SONK compared with that in osteoarthritis. The purpose of this study was therefore to identify the radiographic findings of the lower extremity in SONK. (Source: The Knee)
Source: The Knee - April 22, 2020 Category: Orthopaedics Authors: Hiroaki Tsukamoto, Hidetomo Saito, Kimio Saito, Takayuki Yoshikawa, Masashi Oba, Kana Sasaki, Chie Sato, Manabu Akagawa, Yasuhiro Takahashi, Naohisa Miyakoshi, Yoichi Shimada Source Type: research

How does geometric change after open-wedge high tibial osteotomy affect anterior cruciate ligament status?
Open-wedge high tibial osteotomy (OWHTO) produces three- dimensional (3D) geometric changes. Among them, increased posterior tibial slope (PTS), and altered coronal inclination that induces unintended tibial translation may affect anterior cruciate ligament (ACL) status. The purpose of current study was to evaluate the geometric changes following OWHTO, such as increasing PTS and decreasing tibial subluxation, which may affect the status of ACL. (Source: The Knee)
Source: The Knee - April 22, 2020 Category: Orthopaedics Authors: Ji Eui Kim, Samuel Won, Mohd Shahrul Azuan Jaffar, Jae Ik Lee, Tae Woo Kim, Yong Seuk Lee Source Type: research

Periprosthetic knee infection reconstruction with a hinged prosthesis: Implant survival and risk factors for treatment failure
Severe bone and soft tissue defects are common after failed two-stage exchange arthroplasty for periprosthetic joint infection (PJI). There is a paucity of evidence on the outcomes of using a hinged prosthesis for knee PJI reconstruction during second-stage re-implantation, especially regarding implant survivorship, reinfection risk factors, and functionality after successful reconstruction. (Source: The Knee)
Source: The Knee - April 18, 2020 Category: Orthopaedics Authors: Michael Jian-Wen Chen, Jui-Fu Hung, Chih-Hsiang Chang, Sheng-Hsun Lee, Hsin-Nung Shih, Yu-Han Chang Source Type: research

Evaluation of CD49e as a distinguishing marker for human articular cartilage derived chondroprogenitors
Cell-based therapy in cartilage repair can benefit from the use of chondroprogenitors; a cell type classified as mesenchymal stem cells, demonstrating reduced hypertrophy. Fibronectin, routinely used to isolate chondroprogenitors, classically binds to α5β1 integrins (CD49e + CD29), of which CD49e is said to be highly expressed in progenitors. The aim of our study was to assess the specificity of CD49e as a distinguishing marker for chondroprogenitors; because studies report low expression in fresh chondrocytes (FCs), but recent conflicting da ta has exhibited incremental expression of CD49e in cultured...
Source: The Knee - April 18, 2020 Category: Orthopaedics Authors: Upasana Kachroo, Boopalan Ramasamy, Elizabeth Vinod Source Type: research

Biological responses to individualized small titanium implants for the treatment of focal full-thickness knee cartilage defects in a sheep model
The present study aimed to evaluate the functional, radiological and histological outcome of a customized focal implant for the treatment of focal full-thickness cartilage defects in sheep. (Source: The Knee)
Source: The Knee - April 16, 2020 Category: Orthopaedics Authors: Klaus Edgar Roth, Simon Betz, Irene Schmidtmann, Gerrit Steffen Maier, Hans-Reiner Ludwig, Thomas Vogl, Alf Theisen, Christoph Brochhausen, Hermann G ötz, Philipp Drees, Jan Dirk Rompe, Andreas Alois Kurth Source Type: research

Day of surgery discharge success after implementation of a rapid discharge protocol following unilateral unicompartmental knee arthroplasty
Unilateral unicompartmental knee arthroplasty (UKA) is considered an outpatient procedure, however, previous research has reported a wide success rate range for day of surgery (DOS) discharge. Previous rapid discharge protocols (RDPs) have focused on pain management and nausea control but are commonly done in outpatient facilities, limiting the generalizability to the community hospital setting. Therefore, this study compared the rate of successful DOS discharge after the implementation of a RDP compared to the previous standard discharge protocol (SDP) following unilateral UKA. (Source: The Knee)
Source: The Knee - April 15, 2020 Category: Orthopaedics Authors: Cass K. Nakasone, Dylan Combs, Brian Buchner, Samantha Andrews Source Type: research

Epidemiology of painful knee after total knee arthroplasty in a tertiary care center: Assessment by decision tree
Painful knee after arthroplasty concerns up to 21% of patients at six months. We aimed to evaluate: the application of a decision tree to explain painful knee after total knee arthroplasty (TKA), the rate of unexplained pain after complete algorithmic screening. The aim of the study was to evaluate the causes of painful TKA. Our hypothesis was that it is possible to find the cause of the pain in more than 90% of cases. (Source: The Knee)
Source: The Knee - April 15, 2020 Category: Orthopaedics Authors: Roger Erivan, Christophe Jacquet, Guillaume Villatte, Matthieu Ollivier, Wayne Paprosky Source Type: research

Comparison of intraoperative soft tissue balance measurement between two tensor systems in total knee arthroplasty
This study aimed to compare intraoperative soft tissue balance between two measurement systems in TKA. (Source: The Knee)
Source: The Knee - April 15, 2020 Category: Orthopaedics Authors: Yoshinori Takashima, Koji Takayama, Kazunari Ishida, Hirotsugu Muratsu, Takehiko Matsushita, Takahiro Niikura, Ryosuke Kuroda, Tomoyuki Matsumoto Source Type: research

Return to sports following arthroscopic primary repair of the anterior cruciate ligament in the adult population
To assess return to sport (RTS) rates and evaluate the timeline of rehabilitation milestones following arthroscopic primary anterior cruciate ligament (ACL) repair. (Source: The Knee)
Source: The Knee - April 14, 2020 Category: Orthopaedics Authors: Harmen D. Vermeijden, Jelle P. van der List, Robert O'Brien, Gregory S. DiFelice Source Type: research

In vivo kinematic comparison before and after mobile-bearing unicompartmental knee arthroplasty during high-flexion activities
This study aimed to clarify the kinematic effect of MB-UKA knees during high-flexion activities by comparing the in vivo kinematics before and after surgery. (Source: The Knee)
Source: The Knee - April 13, 2020 Category: Orthopaedics Authors: Kenichi Kono, Hiroshi Inui, Tetsuya Tomita, Takaharu Yamazaki, Shuji Taketomi, Ryota Yamagami, Kohei Kawaguchi, Kazuomi Sugamoto, Sakae Tanaka Source Type: research

Psychosocial predictors of outcomes up to one year following total knee arthroplasty
Total knee arthroplasty (TKA) aims to relieve pain and improve physical functioning of the knee, however, some patients continue to experience pain and impaired function following TKA which cannot be explained by surgical and implant factors. Psychological factors may influence the outcomes of TKA. The aim of this prospective study was to examine the psychosocial factors that predicted pain, stiffness and physical functioning up to one year following TKA. (Source: The Knee)
Source: The Knee - April 13, 2020 Category: Orthopaedics Authors: Kathryn Belford, Nicola Gallagher, Martin Dempster, Melanie Wolfenden, Janet Hill, Janine Blaney, Seamus O'Brien, Anne-Marie Smit, Pieter Botha, Dennis Molloy, David Beverland Source Type: research

A reliable Q angle measurement using a standardized protocol
Studies have shown that Q angle measurements were unreliable. Imaging studies have largely replaced the Q angle for measuring tibial tubercle lateralization.Creating a standardized protocol to measure the Q angle, with normative values, would provide a reliable reference without expensive imaging techniques. (Source: The Knee)
Source: The Knee - April 12, 2020 Category: Orthopaedics Authors: Alan C. Merchant, Ryan Fraiser, Jason Dragoo, Michael Fredericson Source Type: research

Femorotibial rotational mismatch of the Oxford unicompartmental knee in the flexion position is a risk for poor outcomes
Femorotibial rotational mismatch has been reported to cause unsatisfactory outcomes after total knee arthroplasty. However, to our knowledge, no previous reports have described the relationship between the femorotibial rotational mismatch and clinical outcomes of Oxford unicompartmental knee arthroplasty (UKA). (Source: The Knee)
Source: The Knee - April 7, 2020 Category: Orthopaedics Authors: Hiroshi Inui, Shuji Taketomi, Ryota Yamagami, Kenichi Kono, Kohei Kawaguchi, Kentarou Takagi, Tomohumi Kage, Sakae Tanaka Source Type: research

The distance between the tibial tunnel aperture and meniscal root attachment is correlated with meniscal healing status following transtibial pullout repair for medial meniscus posterior root tear
To investigate the relationship between tibial tunnel aperture location and postoperative meniscal healing. (Source: The Knee)
Source: The Knee - April 2, 2020 Category: Orthopaedics Authors: Takaaki Hiranaka, Takayuki Furumatsu, Yusuke Kamatsuki, Shinichi Miyazawa, Yoshiki Okazaki, Shin Masuda, Yuki Okazaki, Yuya Kodama, Toshifumi Ozaki Source Type: research

Arthroscopically assisted and three-dimensionally modeled minimally invasive rim plate osteosynthesis via modified anterolateral approach for posterolateral tibial plateau fractures
The aim of this study was to describe a new, closed, arthroscopically-assisted reduction of posterolateral tibial plateau fractures with minimally invasive plate osteosynthesis using a plate pre-contoured over a 3D-model based on a CT-scan of the injured tibial plateau and positioned by using a minimal anterolateral approach. (Source: The Knee)
Source: The Knee - April 1, 2020 Category: Orthopaedics Authors: Marco Delcogliano, Roberto Marin, Luca Deabate, Davide Previtali, Giuseppe Filardo, Michele Francesco Surace, Christian Candrian, Paolo Gaffurini Tags: Novel techniques Source Type: research

Passing return to sports tests after ACL reconstruction is associated with greater likelihood for return to sport but fail to identify second injury risk
A limited number of patients return to sport (RTS) after an anterior cruciate ligament reconstruction (ACLR) and patients who RTS have a relatively high risk for second ACL injury. The purpose of the current study was to compare the results of a test battery between patients who returned to the pre-injury level of sport (RTS group) and patients who did not (NO-RTS group).It was hypothesized that the RTS group showed better test results. (Source: The Knee)
Source: The Knee - April 1, 2020 Category: Orthopaedics Authors: Wouter Welling, Anne Benjaminse, Koen Lemmink, Alli Gokeler Source Type: research

Accuracy and precision in resection alignment: Insights from 10,144 clinical cases using a contemporary computer-assisted total knee arthroplasty system
This study aimed to assess resection accuracy across the entire TKA application history of a modern CAOS system considering multiple factors. (Source: The Knee)
Source: The Knee - March 26, 2020 Category: Orthopaedics Authors: Yifei Dai, Charlotte Bolch, Amaury Jung, Cyril Hamad, Laurent Angibaud, Bernard N. Stulberg, James I. Huddleston Source Type: research