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Introduction: There have been controversial studies on the impact of prior knee arthroscopy (KA) on outcomes of total knee arthroplasty (TKA). The purpose of this comparative study is to investigate the impact of prior KA of medial meniscus on patients undergoing TKA by evaluating the International Knee Society Score (IKS), the complications, and revisions.
Methods: This retrospective study reviewed 84 patients with TKA who had undergone prior KA of the medial meniscus and compared them to 84 cases, without a history of prior KA as a control group. Outcomes were assessed with the original IKS scores and complications. The mean follow-up was 8 years.
Results: There was no significant difference between groups with respect to demographics, or pre-operative IKS. The mean pre and postoperative IKS was not different between groups. The all-cause reoperation, revision, and complication rates of the KA group were not significantly higher than those of the control group.
Conclusion: The present study seems to reveal that previous KA of the medial meniscus does not negatively affect a subsequent TKA. Nevertheless, larger studies may be necessary to confirm this observation.
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http://dx.doi.org/10.1051/sicotj/2024001 | DOI Listing |
J ISAKOS
September 2025
UPMC Freddie Fu Sports Medicine Center, Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA; Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA.
Objectives: The deep lateral femoral notch sign, observed in some anterior cruciate ligament (ACL) injuries, may result from valgus-compressive forces and anterior tibial translation. Since combined ACL and medial collateral ligament (MCL) injuries often involve high valgus torque, we hypothesized an association between MCL tears and the presence of a deep lateral femoral notch sign.
Methods: We conducted a retrospective cohort study of skeletally mature patients (≥14 years) who underwent primary ACL reconstruction (ACLR) and had preoperative MRIs within 3 weeks of injury.
Vet Surg
September 2025
Orthopedic Research Laboratory, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands.
Objective: The aim of this study was to ascertain whether a prosthetic meniscus adapts pressures to native tibial contact pressures in a canine stifle joint after total medial meniscectomy.
Study Design: Ex vivo biomechanical experimental study.
Sample Population: Seven cadaveric hindlimbs of seven large-breed dogs.
Case Rep Orthop
August 2025
Department of Orthopaedic Surgery, Nishinomiya Kaisei Hospital, Nishinomiya, Hyogo, Japan.
In recent decades, arthroscopic meniscal repair has been increasingly indicated for meniscal tears in the last decades. Although literature generally reports favorable surgical outcomes, it remains unclear whether the repaired meniscus maintains its function over the long term while performing its chondroprotective function without recurrent tear after clinical healing. A 43-year-old Japanese man who underwent meniscal repair for a bucket handle tear of the medial meniscus (MM) at the age of 15 years presented with right knee pain and catching symptoms without a preceding traumatic event.
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August 2025
The Third People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou City, Fujian, China.
Objective: This study investigates the biomechanical effects of long-term Tai Chi practice on the knee meniscus through biomechanical experimentation and finite element simulation, focusing on practitioners performing Knee Brushing and Twisting Step. The findings aim to establish scientific guidelines for optimizing exercise protocols in middle-aged and elderly populations.
Methods: Twenty male middle-aged and elderly practitioners were recruited, divided into a Beginner Group (BG: n = 10), and an Experienced Group (EG: n = 10).
Orthop J Sports Med
September 2025
Clinique du Sport de Bordeaux-Merignac, Merignac, France.
Background: While meniscal tears, particularly when treated by meniscectomy concurrent with anterior cruciate ligament reconstruction (ACLR), are known to increase the risk of osteoarthritis and lead to poorer outcomes, their effects on return to sport (RTS) have been little studied so far.
Purpose: To assess the effect of meniscal tears on RTS in the context of ACLR depending on the affected meniscus.
Study Design: Cohort study; Level of evidence, 3.