ArticleInternational journal of surgery case reports2019
Subchondral fracture caused by unevenly stiffened meniscus after radiofrequency-assisted arthroscopic knee meniscectomy: A case report and review of the literature.
Article in International journal of surgery case reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
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3 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.
- Time to reconsider post arthroscopic osteonecrosis of the knee: a systematic review.Musculoskeletal surgery · 2023Pooled it
- Histopathological evaluation of spontaneous osteonecrosis of the knee: time to reconsider history and nomenclature-a scoping review.Musculoskeletal surgery · 2025Article
- Subchondral insufficiency fracture of the knee: progress in the pathogenesis and treatment.Frontiers in surgery · 2025Review
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6 authors at 2 institutions in 1 country.
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Abstract
introductionCausality for postarthroscopic osteonecrosis of the knee is unknown, and related mechanisms have been poorly characterized. PRESENTATION OF CASE: This report describes a case of a 69-year-old man with subchondral fracture occurring after arthroscopic meniscectomy using a radiofrequency assisted shaver. The patient experienced increasingly intense knee pain 10 months after the meniscectomy. MR imaging revealed postarthroscopic osteonecrosis of the knee in the femoral medial condyle, requiring unicompartmental knee arthroplasty. A mid-coronal cut section of the resected medial femoral condyle showed a linear fracture line parallel to the subchondral bone endplate. Histopathological examination showed prominent callus formation on both sides of the fracture, comprised of reactive woven bone and granulation tissue. The middle portion of the resected medial meniscus was of uneven height, with significant stiffening of the higher side. The stiffened region of the medial meniscus corresponded to the subchondral fracture in the medial femoral condyle. DISCUSSION: The etiology of post-arthroscopic osteonecrosis of the knee is controversial, but it seems possible that altered knee biomechanics after meniscectomy may predispose patients to osteonecrosis. The findings of the current case suggested that uneven stiffening of the meniscus caused concentration of stress that resulted in postarthroscopic subchondral fracture.
conclusionSubchondral insufficiency fracture following arthroscopy may be underdiagnosed. Surgeons need to carefully consider the risk of subchondral fracture following uneven stiffening of the meniscus when to use radiofrequency in the debridement of a torn meniscus.
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