SHeRPA.

Study name	Comparison of two shoulder replacement methods after trauma
Methods	Multicentre (5 centres in the UK), randomised controlled trial. Participants are blinded.
Participants	50 participants aged over 65 years with displaced 3‐ or 4‐part proximal humeral fractures; fit for surgery Exclusion criteria: dementia, non‐consent, unfit for reverse shoulder arthroplasty, glenoid fracture, axillary nerve palsy
Interventions	1. Reverse total shoulder arthroplasty 2. Hemiarthroplasty
Outcomes	Follow‐up: 2 years, also 6 weeks, 3 and 12 months Primary outcome: Constant score (at 12 months) Secondary outcomes: QuickDASH (Disabilities of the Arm, Shoulder and Hand) Score, Oxford Shoulder Score, ASES score
Starting date	Start date: June 2013 Estimated completion date: August 2017; changed to May 2019
Contact information	Prof Adam Watts Wrightington Hospital Hall Lane Appley Bridge Wigan Lancashire WN6 9EP United Kingdom
Notes	Retrospectively registered (applied: 13 January 2015) after end of recruitment; end date extended to May 2019 Funder: Tornier UK Limited (probably manufacturer of implants under test)