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Year : 2014  |  Volume : 34  |  Issue : 5  |  Page : 214-216

Dissociation of bipolar prostheses with hip subluxation: A case report and literature review

Department of Orthopaedic Surgery, Tri-service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China

Correspondence Address:
Dr. Leou-Chyr Lin
Department of Orthopaedic Surgery, Tri-Service General Hospital, National Defense Medical Center, No. 325, Sec. 2, Cheng-Gong Road, Taipei 114, Taiwan
Republic of China
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1011-4564.143649

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Bipolar hemiarthroplasty, a modular system, has been utilized for decades to treat intracapsular fractures of the femoral neck and avascular necrosis of the femoral head. Dislocation is one of the main complications of hip hemiarthroplasty performed for displaced femoral neck fractures. Classic dislocation of the hemiarthroplasty from the native acetabulum occurs in 2.6% of cases. Dissociation between the small head of the prosthesis and the polyethylene insert is an extremely rare complication of bipolar hemiarthroplasty and results in hip dislocation and severe disability. Surgeons must be cognizant of this rare complication and should proceed to open reduction to treat this problem.

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