A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities.

IF 2.4 3区医学 Q2 ORTHOPEDICS BMC Musculoskeletal Disorders Pub Date : 2025-02-25 DOI:10.1186/s12891-025-08452-y

Yasushi Oshima, Nobuyoshi Watanabe, Yoshiteru Kajikawa, Tadahiko Yotsumoto, Yoshinobu Watanabe, Tokifumi Majima

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Abstract

Background: Meniscal injury and/or extrusion have been indicated as causes of subchondral insufficiency fracture (SIFK). However, mediolateral knee laxity has not been discussed as a risk factor. This is a case report of SIFK potentially caused by mediolateral laxity in the absence of a meniscal disorder.

Case presentation: A 59-year-old male patient presented with SIFK in the medial femoral condyle without meniscal injury or extrusion. Tibial condylar valgus osteotomy (TCVO) was performed, and the preoperative total mediolateral laxity of 8° in extension and 6° in 80° flexion decreased to 6° and 4°, respectively, two years postoperatively. Moreover, the magnetic resonance images revealed no bone marrow lesions, and the knee injury and osteoarthritis outcome score improved from 61.4 to 79.7.

Conclusion: A case of SIFK with mediolateral laxity, without meniscal disorder, was successfully treated by TCVO, indicating knee laxity as a potential risk factor for SIFK.

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无结构异常的膝关节内外侧松弛引起的膝关节软骨下不全骨折一例。

背景：半月板损伤和/或挤压已被认为是软骨下不全骨折（SIFK）的原因。然而，膝关节内侧松弛并没有作为一个危险因素进行讨论。这是一个病例报告的SIFK可能引起的中外侧松弛在没有半月板疾病。病例介绍：一名59岁男性患者在股骨内侧髁出现SIFK，没有半月板损伤或挤压。行胫骨髁外翻截骨术（TCVO），术前伸展8°和屈曲80°的总中外侧松弛度分别在术后2年降至6°和4°。此外，磁共振图像显示没有骨髓病变，膝关节损伤和骨关节炎预后评分从61.4提高到79.7。结论：1例伴有中外侧松弛，无半月板紊乱的SIFK经TCVO治疗成功，提示膝关节松弛是SIFK的潜在危险因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

BMC Musculoskeletal Disorders 医学-风湿病学

CiteScore

3.80

自引率

8.70%

发文量

1017

审稿时长

3-6 weeks

期刊介绍： BMC Musculoskeletal Disorders is an open access, peer-reviewed journal that considers articles on all aspects of the prevention, diagnosis and management of musculoskeletal disorders, as well as related molecular genetics, pathophysiology, and epidemiology. The scope of the Journal covers research into rheumatic diseases where the primary focus relates specifically to a component(s) of the musculoskeletal system.