NCT02944058.

Study name	Plate fixation versus intramedullary nailing of 3 and 4 part proximal humerus fractures
Methods	Randomised controlled trial
Participants	90 participants (target) aged 18 or over with 3‐ and 4‐part proximal humeral fractures
Interventions	1. PHILOS plate 2. Multiloc intramedullary nail Deltopectoral or deltoid split as surgical access. All participants will have calcar screws and cuff sutures
Outcomes	Follow‐up: 6, 12, 52 and 104 weeks, but also 5 years Primary outcome: DASH (QuickDASH at 6 weeks) Secondary outcomes: Constant score; radiologically‐assessed complications (plate cut‐out, nail migration, screw cut‐out, reduction of head shaft angle / varus subsidence); complications (infection, avascular necrosis, thrombosis, nerve compression or damage, pseudoarthrosis); economics (visits to doctor, physiotherapist, sick leave, reoperations)
Starting date	October 2016 Study completion: October 2025
Contact information	Dr Annette KB Wikerøy, University Hospital, Akershus, Norway Email: awikeroy@hotmail.com
Notes	Status: recruiting (July 2018)