Overview
Hemiarthroplasty replaces the femoral head while preserving the socket, commonly for hip fractures.

Indications
Displaced femoral neck fractures in older adults.

Procedure overview
The femoral head is replaced with a prosthesis; the acetabulum is left intact.

Recovery
Early mobilization with physical therapy; recovery varies by patient health.

Risks and complications
Dislocation, infection, leg length difference, and loosening.

Alternatives
Internal fixation or total hip replacement depending on fracture pattern.