Risk Factors of Loss of Knee Range of Motion after Primary Anterior Cruciate Ligament Reconstruction following Preoperative Recovery of Knee Range of Motion
This study showed that the incidence of loss of knee ROM at 12 months after primary ACLR was 18.4% (26/141). An older age, a higher LTSH/TL, and a smaller TSW/TL may be associated with loss of knee ROM at 12 months after ACLR. [...] Thieme Medical Publishers, Inc. 333 Seventh Avenue, 18th Floor, New York, NY 10001, USAArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - December 30, 2022 Category: Orthopaedics Authors: Yokoe, Takuji Tajima, Takuya Yamaguchi, Nami Morita, Yudai Chosa, Etsuo Tags: Original Article Source Type: research

The Same Day Discharges following Primary Total Knee Arthroplasty: A Single Surgeon, Propensity Score-Matched Cohort Analysis
This study aimed to compare clinical and functional outcomes between same-day discharge TKA patients and inpatient-discharge TKA patients. A retrospective review of 100 consecutive patients with same-day discharge matched to a cohort of 300 patients with inpatient discharge that underwent TKA by a single surgeon at a tertiary referral center was conducted. Propensity-score matching was performed to adjust for baseline differences in preoperative patient demographics, medical comorbidities, and patient-reported outcome measures (PROMs) between both cohorts. All patients had a minimum of 1-year follow-up (range: 1.2–2.8 ye...
Source: Journal of Knee Surgery - December 30, 2022 Category: Orthopaedics Authors: Klemt, Christian Cohen-Levy, Wayne Brian Pattavina, Meghan H. Oliveira, Bruna M. Castro De Uzosike, Akachimere Cosmas Kwon, Young-Min Tags: Original Article Source Type: research

Addition of Tibial Tubercle Osteotomy to Combined MPFL Reconstruction and Lateral Retinacular Release not Recommended for Recurrent Patellar Dislocation in Patients with 15 to 20  mm TT-TG
This study aimed to investigate the efficacy and radiological changes in medial patellofemoral ligament reconstruction (MPFLR) and lateral retinacular release (LRR) with and without tibial tubercle osteotomy (TTO) for recurrent patellar dislocation in patients with a tibial tubercle-trochlear groove (TT-TG) distance of 15 to 20 mm. Fifty-four patients were enrolled in this retrospective study between 2010 and 2014. The average patient age was 21.6 ± 5.0 years. All patients underwent MPFLR and LRR, and in 18 patients, these procedures were combined with TTO. Patients were evaluated preoperatively and postoperatively ...
Source: Journal of Knee Surgery - December 23, 2022 Category: Orthopaedics Authors: Zhang, Yuankai Nan, Kai Zhao, Yan Zhang, Xin Song, Qichun Fan, Lihong Shi, Zhibin Dang, Xiaoqian Tags: Original Article Source Type: research

When Do We Perform Elective Total Knee Arthroplasty? General and Demographic-Specific Trends of Preoperative Pain and Function among 10,327 Patients
J Knee Surg DOI: 10.1055/s-0042-1758774Total knee arthroplasty (TKA) is the sole disease-modifying intervention for end-stage osteoarthritis. However, the temporal trends and stratification of age and patient demographics of pain and function levels at which surgeons perform TKA have not been characterized. The present investigation aimed to analyze the temporal trends of preoperative pain and functional patient-reported outcomes measures (PROMs) over the past 5 years when stratifying patient demographics. A prospective cohort of all patients who underwent primary elective TKA between January 2016 and December 2020 at a No...
Source: Journal of Knee Surgery - December 23, 2022 Category: Orthopaedics Authors: Soares, Rui W. Emara, Ahmed K. Orr, Melissa Klika, Alison K. Rull án, Pedro J. Pumo, Thomas J. Krebs, Viktor E. Molloy, Robert M. Piuzzi, Nicolas S. Tags: Original Article Source Type: research

Does Preoperative Opioid Consumption Influence Patient Satisfaction following Total Knee Arthroplasty?
J Knee Surg DOI: 10.1055/a-1946-6217Chronic opioid use prior to total knee arthroplasty (TKA) has been implicated in adverse outcomes. The purpose of this study was to evaluate clinical outcome measures and patient satisfaction in patients with a history of preoperative chronic opioid use undergoing primary TKA. A retrospective cohort study was performed on 296 consecutive patients undergoing primary TKA. Seventy-four (25%) patients were identified with chronic preoperative opioid use (study group; 22 males, 52 females). A 3:1 matched cohort ratio of control versus study group was utilized resulting in a control group cons...
Source: Journal of Knee Surgery - December 23, 2022 Category: Orthopaedics Authors: Smith, Austin F. Smith, Nolan S. Smith, Langan S. Yakkanti, Madhusudhan R. Malkani, Arthur L. Tags: Original Article Source Type: research

The Association of Patient and Procedural Factors on Improved Outcomes: A Cluster Analysis on 853 Total Knee Arthroplasty Patients
This study analyzed 853 patients (95 conventional and 758 robotic-assisted) who had completed preoperative, 6-month, and 1-year postoperative rWOMAC surveys. Two clusters were constructed using rWOMAC pain and function scores at 1 year. Cluster 1 included 753 patients who had better outcomes at 1 year (mean rWOMAC pain = 0.9, mean rWOMAC function = 1.4), and cluster 2 included 100 patients who had worse outcomes at 1 year (mean rWOMAC pain = 7.7, mean rWOMAC function = 10.4). The clusters were compared to determine (1) how scores improved and (2) what patient characteristics were significantly different bet...
Source: Journal of Knee Surgery - December 23, 2022 Category: Orthopaedics Authors: Hampp, Emily Shi, Sarah Scholl, Laura Taylor, Kelly B. Marchand, Kevin B. Kahan, Michael E. Chen, Zhongming Marchand, Robert C. Mont, Michael A. Tags: Original Article Source Type: research

Concomitant Lateral Meniscus Tear is Associated with Residual Rotatory Knee Instability 1 Year after Anterior Cruciate Ligament Reconstruction: Case-cohort Study
Conclusions The current cohort study clarified that LMT comorbid with ACL injury was longitudinally associated with increased RKI prevalence 1 year after ACLR. Therefore, patients who underwent both ACLR and LM repair demonstrated a significantly higher prevalence of residual RKI. [...] Thieme Medical Publishers, Inc. 333 Seventh Avenue, 18th Floor, New York, NY 10001, USAArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - December 23, 2022 Category: Orthopaedics Authors: Chiba, Daisuke Yamamoto, Yuji Kimura, Yuka Sasaki, Shizuka Sasaki, Eiji Yamauchi, Shohei Tsuda, Eiichi Ishibashi, Yasuyuki Tags: Original Article Source Type: research

Two-Year Survivorship and Outcomes of a Three-Dimensional Printed Metaphyseal Cone in the Setting of Revision Total Knee Arthroplasty
J Knee Surg 2022; 35: 1540-1543 DOI: 10.1055/s-0042-1758551Poor metaphyseal fixation secondary to bone loss in revision total knee arthroplasty (TKA) continues to be challenging. One technique to increase implant stability is the use of novel three-dimensional (3D) printed titanium metaphyseal cones with adjunctive stems for added fixation. However, the survival of these novel constructs is poorly understood. Therefore, we sought to examine 3D-printed titanium metaphyseal cone components in revision TKA for aseptic as well as septic reasons and aimed to evaluate: (1) revision-free survivorships; (2) patient-reported outcom...
Source: Journal of Knee Surgery - December 20, 2022 Category: Orthopaedics Authors: Mon árrez, Rubén Bains, Sandeep S. Chen, Zhongming Sax, Oliver C. Salib, Christopher G. Mont, Michael A. Delanois, Ronald E. Tags: Special Focus Section Source Type: research

Dressing Management during Total Knee Arthroplasty: A Systematic Review and Meta-Analysis
J Knee Surg 2022; 35: 1524-1532 DOI: 10.1055/s-0042-1758674Dressings for total knee arthroplasty (TKA) typically focus on promoting optimal healing, while preventing infection, allowing for functionality and immediate ambulation, while providing for excellent cosmesis. We have previously described four aspects of closure after TKA involving the: (1) deep fascial layer; (2) subdermal layer; (3) intradermal layer, including the subcuticular region; and (4) a specific aseptic dressing. In this meta-analysis and systematic review of the literature, we will focus on the dressing. Specifically, we assessed: (1) infection risk of...
Source: Journal of Knee Surgery - December 20, 2022 Category: Orthopaedics Authors: Chen, Zhongming Bains, Sandeep S. Sax, Oliver C. Sodhi, Nipun Mont, Michael A. Tags: Special Focus Section Source Type: research

Unicompartmental Knee Arthroplasty Has Lower Infection, Conversion, and Complication Rates Compared to High Tibial Osteotomy
Conclusion This study provides large-scale analyses demonstrating that UKA is associated with lower infection rates and fewer conversions to TKA compared with patients who have undergone HTO. Dislocations, periprosthetic fractures, and surgical site infections were also found to be lower among UKA patients. However, with careful patient selection, good results and preservation of the native knee are achieved with HTOs. Therefore, UKA versus HTO may be an important discussion to have with patients in an effort to lower the incidence of postoperative infections and complications. [...] Thieme Medical Publishers, Inc. 333 S...
Source: Journal of Knee Surgery - December 20, 2022 Category: Orthopaedics Authors: Kahan, Michael E. Chen, Zhongming Angerett, Nathan R. Sax, Oliver C. Bains, Sandeep S. Assayag, Michael J. Delanois, Ronald E. Nace, James Tags: Special Focus Section Source Type: research

Delaying Total Knee Arthroplasty More than 4 Weeks after Intra-Articular Knee Injection Does Not Further Decrease Risk of Septic Revision
J Knee Surg 2022; 35: 1511-1517 DOI: 10.1055/s-0042-1757596Hyaluronic acid (HA) and corticosteroid (CS) injections are utilized in symptom management for patients with osteoarthritis. However, contamination of the joint may increase the risk of infection following total knee arthroplasty (TKA). Therefore, the purpose of this study was to examine 90-day surgical site infection (SSI) and manipulation under anesthesia (MUA) as well as up to 2-year prosthetic joint infection (PJI) in intra-articular knee injection recipients prior to TKA compared with patients who did not have knee injections. We specifically assessed (1) timi...
Source: Journal of Knee Surgery - December 20, 2022 Category: Orthopaedics Authors: Bains, Sandeep S. Chen, Zhongming Sax, Oliver C. Naziri, Qais Nace, James Delanois, Ronald E. Tags: Special Focus Section Source Type: research

Dealing with Difficult Total Knee Arthroplasties
J Knee Surg 2022; 35: 1503-1503 DOI: 10.1055/s-0042-1757598 Thieme Medical Publishers, Inc. 333 Seventh Avenue, 18th Floor, New York, NY 10001, USAArticle in Thieme eJournals: Table of contents  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - December 20, 2022 Category: Orthopaedics Authors: Chen, Zhongming Bains, Sandeep S. Hameed, Daniel Nace, James Delanois, Ronald E. Mont, Michael A. Tags: Foreword Source Type: research

Reduced 5-Year Risk for Revision Of The Oxford UKA Using New Instrumentation Versus Conventional Instrumentation; A Registry Study Of 12,867 UKAs.
This study aimed to assess the 5-year risk for revision and reasons for revision of the Oxford medial UKA using the new instrumentation (Microplasty) with its predecessor, i.e., conventional instrumentation (Phase 3). Patients and Methods: Data of all medial UKAs from the Dutch Arthroplasty Register (LROI) between 2007-2019 were collected. Type of instrumentation was divided into new (Microplasty) and conventional instrumentation. Kaplan-Meier analysis was performed to calculate 5-year cumulative revision percentage with any reason for revision as endpoint. A multivariable Cox regression with outcome revision of UKA adjust...
Source: Journal of Knee Surgery - December 12, 2022 Category: Orthopaedics Authors: van Langeveld, Stephan Jacobus Janssen, Stein J. Koenraadt, Koen Elmans, Leon van Steenbergen, Lisa N. van Geenen, Rutger Tags: Original Article Source Type: research

Does Pre-Operative Opioid Consumption Influence Patient Satisfaction Following Total Knee Arthroplasty?
Conclusions: Patients with history of chronic preoperative opioid use had significantly lower patient satisfaction and KS Function scores and increased postoperative opioid usage at 12 months compared to patients without a history of opioid use prior to TKA. [...] Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, GermanyArticle in Thieme eJournals: Table of contents  |  Abstract (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - December 12, 2022 Category: Orthopaedics Authors: Smith, Austin Smith, Nolan S. Smith, Langan S. Yakkanti, Madhu R Malkani, A. L. Tags: Original Article Source Type: research

Robust Randomized Controlled Data Is Lacking in Total Joint Arthroplasty
Conclusion: The authors believe that other study designs, such as database or registry analyses, are also appropriate in this rapidly advancing field of joint arthroplasty for the continuing evaluation and approval of new prostheses and techniques, while we await more PRCTs in our field. [...] Thieme Medical Publishers, Inc. 333 Seventh Avenue, 18th Floor, New York, NY 10001, USAArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text (Source: Journal of Knee Surgery)
Source: Journal of Knee Surgery - November 25, 2022 Category: Orthopaedics Authors: Chen, Zhongming Bains, Sandeep S. Hameed, Daniel Dubin, Jeremy A. Stern, Jonathan M. Mont, Michael A. Tags: Special Focus Section Source Type: research