Ehab Nazzal - Freddie Fu Sports Medicine Center- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
Rajiv Reddy - Freddie Fu Sports Medicine Center- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
David Solomon - Summit Health Orthopaedics, Florham Park, NJ, USA
Jonathan Hughes - Freddie Fu Sports Medicine Center- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
James Rooney - Freddie Fu Sports Medicine Center- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
Mitchell Fourman - Hospital for Special Surgery, New York, NY, USA
David Hirsch - Rothman Orthopaedics, Orlando, FL, USA
Mark Rodosky - Freddie Fu Sports Medicine Center- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
Albert Lin - Freddie Fu Sports Medicine Center- University of Pittsburgh Medical Center, Pittsburgh, PA, USA

Objectives: This study aimed to compare short-term outcomes following Total Shoulder Arthroplasty (TSA) and Humeral Head Resurfacing (HHR) in patients with glenohumeral osteoarthritis (GHOA).Methods: A retrospective analysis included patients who had undergone either TSA or HHR for GHOA at a single institution. Baseline demographics, complications, range of motion (active forward flexion, FF and active external rotation, ER), visual analog scores (VAS), and Subjective Shoulder Values (SSV) were collected.Results: A total of ۶۹ TSA and ۵۶ HHR patients were analyzed. More HHR patients were laborers (۴۴% versus ۲۱%, P=۰.۰۱). There were more smokers in the TSA group (۲۵% versus ۱۱%, P=۰.۰۴) and more cardiovascular disease in the HHR cohort (۶۴% versus. ۶%, p<۰.۰۰۰۱). Postoperative FF was similar, but ER was greater in the HHR (۴۷° ± ۱۵°) vs. TSA group (۴۰° ± ۱۲°, P = ۰.۰۱). VAS was lower after TSA vs. HHR (median ۰, IQR ۱ versus median ۳.۷, IQR ۶.۹, p<۰.۰۰۰۱), and SSV was higher after TSA (۸۹% ± ۱۳% vs. ۷۵% ± ۲۰% after HHR; p<۰.۰۰۰۱). Post-operative impingement was more common after HHR (۳۲% vs. ۳% for TSA, p<۰.۰۰۰۱). All other complications were equivalent.Conclusion: While younger patients and heavy laborers had improved ER following HHR, their pain relief was greater after TSA. Decisions on surgical technique should be based on patient-specific demographic and anatomic factors. Level of evidence: III

Humeral Head Resurfacing, Resurfacing hemiarthroplasty, short-term follow-up, Shoulder osteoarthritis, Total Shoulder Arthroplasty