Complications of total hip arthroplasty

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Complications of hip joint replacements are common and are essential for the radiologist to be aware in assessment of the radiographs with hip prostheses. They are many and can occur at various time intervals following the initial surgery:

aseptic loosening: considered to be the most common indication for revision surgery ^{1-2, 4}
infection of hip prostheses
particle disease / histiocytic reaction / aggressive granulomatosis
fracture
- periprothesthetic fracture
- cement fracture
- stem fracture
dislocation (~5% of all replacements ⁴)
- dislocation of femoral head out of cup: component dissociation
- dislocation of entire acetabular cup
- dislocation of stem
malpositioning
- creep: can lead to protrusio acetabuli
- polyethylene wear eccentric position of the femoral head component within the acetabular component
heterotopic bone formation
metal-on-metal pseudotumour
pseudobursae formation ²
abductor tendon tears
stress shielding
trochanteric bursitis

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Complications of total hip arthroplasty

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