We retrospectively reviewed the success of meniscus repair with the FasT-Fix meniscus repair device for vertical unstable medial meniscus tears at the time of anterior cruciate ligament (ACL) reconstruction. A repair failure was defined as patients having medial knee symptoms leading to a subsequent arthroscopy confirming a tear at the repair site. Objective follow-up was obtained on 27 patients at a mean of 3.1 years postoperatively (range, 2-5 years). Two of 22 repairs (9%) in the red-red vascular zone and 4 of 5 repairs (80%) in the red-white vascular zone retore at the repair site at an average of 9 months postoperatively (range, 3-20 months). The results of this study showed a high failure rate (22%) of unstable vertical medial meniscus repairs with ACL reconstruction, especially for repairs done to tears in the red-white vascular zone.

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http://dx.doi.org/10.3928/01477447-20090401-02DOI Listing

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Article Synopsis
  • Limited biomechanical research explores how horizontal meniscus tears (HMTs), meniscal repair (MR), and meniscectomy affect knee biomechanics, prompting this systematic review to investigate changes in knee contact mechanics following these conditions.
  • A total of 6 studies were analyzed, revealing that HMTs increase peak contact pressure (PCP) by 14.2% and decrease contact area (CA) by 7.1%; partial meniscectomies (PM) also raised PCP significantly while reducing CA, and complete meniscectomies (CM) resulted in even higher increases in PCP (54.5%).
  • Meniscal repair (MR) showed no significant difference in PCP or CA compared to intact menisci, indicating that it
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Dynamic biomechanical effects of medial meniscus tears on the knee joint: a finite element analysis.

J Orthop Surg Res

January 2025

Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.

Background: Meniscus tears can change the biomechanical environment of the knee joint and might accelerate the development of osteoarthritis. The aim of this study was to investigate the dynamic biomechanical effects of different medial meniscus tear positions and tear gaps on the knee during walking.

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