Dislocated hip prosthesis

Case contributed by Dr Bahman Rasuli

Presentation

Rheumatoid arthritis since 15 years ago.

Patient Data

Age: 35 years
Gender: Female
CT

Dislocated right hip hemiarthroplasty with upward migration femur prosthesis into the gluteus muscles

Small bony fragments are seen between the femur diaphysis and acetabulum.

Total hip arthroplasty on the left side appears normal.

Case Discussion

Dislocation of hip joint replacements is not uncommon, occurring in 3-4% of patients. Hip joint dislocation not only causes pain and distress to patients but repeated dislocations can damage the prosthesis resulting in further instability.

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