A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities
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 meni...
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BMC
2025-02-01
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| Series: | BMC Musculoskeletal Disorders |
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| Online Access: | https://doi.org/10.1186/s12891-025-08452-y |
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| author | Yasushi Oshima Nobuyoshi Watanabe Yoshiteru Kajikawa Tadahiko Yotsumoto Yoshinobu Watanabe Tokifumi Majima |
| author_facet | Yasushi Oshima Nobuyoshi Watanabe Yoshiteru Kajikawa Tadahiko Yotsumoto Yoshinobu Watanabe Tokifumi Majima |
| author_sort | Yasushi Oshima |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-004c1148fcb940f4aa968ebd0b19241b |
| institution | OA Journals |
| issn | 1471-2474 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Musculoskeletal Disorders |
| spelling | doaj-art-004c1148fcb940f4aa968ebd0b19241b2025-08-20T02:16:21ZengBMCBMC Musculoskeletal Disorders1471-24742025-02-012611610.1186/s12891-025-08452-yA case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalitiesYasushi Oshima0Nobuyoshi Watanabe1Yoshiteru Kajikawa2Tadahiko Yotsumoto3Yoshinobu Watanabe4Tokifumi Majima5Department of Orthopaedic Surgery, Nippon Medical SchoolDepartment of Orthopaedic Surgery, Kyoto Kujo HospitalDepartment of Orthopaedic Surgery, Kyoto Kujo HospitalDepartment of Orthopaedic Surgery, Kyoto Kujo HospitalTrauma and Reconstruction Center, Teikyo University HospitalDepartment of Orthopaedic Surgery, Nippon Medical SchoolAbstract 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.https://doi.org/10.1186/s12891-025-08452-ySubchondral insufficiency fracture of the knee (SIFK)Bone marrow lesion (BML)Mediolateral knee laxityTibial condylar valgus osteotomy (TCVO) |
| spellingShingle | Yasushi Oshima Nobuyoshi Watanabe Yoshiteru Kajikawa Tadahiko Yotsumoto Yoshinobu Watanabe Tokifumi Majima A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities BMC Musculoskeletal Disorders Subchondral insufficiency fracture of the knee (SIFK) Bone marrow lesion (BML) Mediolateral knee laxity Tibial condylar valgus osteotomy (TCVO) |
| title | A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities |
| title_full | A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities |
| title_fullStr | A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities |
| title_full_unstemmed | A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities |
| title_short | A case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities |
| title_sort | case of subchondral insufficiency fracture of the knee potentially caused by mediolateral knee laxity without structural abnormalities |
| topic | Subchondral insufficiency fracture of the knee (SIFK) Bone marrow lesion (BML) Mediolateral knee laxity Tibial condylar valgus osteotomy (TCVO) |
| url | https://doi.org/10.1186/s12891-025-08452-y |
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