Subchondral Fracture of the Femoral Head After Acetabular Fracture: a Case Report

Overview

Journal J Med Case Rep

Publisher Biomed Central

Specialty General Medicine

Date 2014 Dec 20

PMID 25522666

Citations 1

Authors

Keiichiro Iida

Satoshi Hamai

Takuaki Yamamoto

Yasuharu Nakashima

Goro Motomura

Masanobu Ohishi

Kazuyuki Karasuyama

Yukihide Iwamoto

Affiliations

Soon will be listed here.

Abstract

Introduction: Preventing post-traumatic osteoarthritis is a challenging problem following acetabular fracture. Progressive osteoarthritis is considered to be caused by an irregular articular surface of the acetabular roof or cartilage injury, but little is known about the pathogenesis of collapse of the femoral head after acetabular fracture. We report a case of post-traumatic osteoarthritis after acetabular fracture in which subchondral fracture of the femoral head contributed to the progressive collapse of the femoral head and osteoarthritis. To the best of our knowledge, there has been no previous report of subchondral fracture of the femoral head after acetabular fracture.

Case Presentation: A 58-year-old Japanese man fell from a ladder. He was diagnosed with a left acetabular fracture, which was managed conservatively. He developed left coxalgia six months after injury and was seen at our institution one year after the onset of pain. The left acetabular fracture had fused, but his left femoral head had collapsed. The images at the time of injury showed a fracture of the acetabular roof, and an approximately 2mm step-off existed in the articular surface. Retrospective evaluation of the plain radiographs and computed tomography images showed that his femoral head had progressively collapsed. Our patient underwent total hip arthroplasty. Histopathologic findings demonstrated that the collapse of his femoral head was caused by a subchondral fracture of his femoral head.

Conclusion: Our experience with this case indicates that in addition to post-traumatic osteonecrosis, subchondral fracture may need to be considered in cases with progressive collapse of the femoral head after acetabular fracture.

Citing Articles

Rapid Destruction of the Hip Joint After Acetabular Fracture in an Elderly Patient.

Hidaka R, Matsuda K, Kawano H Arthroplast Today. 2021; 11:122-126.

PMID: 34522739 PMC: 8427092. DOI: 10.1016/j.artd.2021.08.004.

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