Exploring the role of hemiarthroplasty in revision shoulder arthroplasty: a systematic review

HA remains a salvage solution with indication-dependent effectiveness: best after humeral/glenoid loosening when reconstruction is feasible, modest in instability, and poor in infection. While HA can relieve pain and provide moderate functional improvement, it does not restore normal function. Selection should be deliberate and indication-specific, and future studies should adopt standardized reporting and prospective, indication-stratified designs.