NCT03217344.

Study name	Conservative treatment of proximal humeral fractures
Methods	Randomised controlled trial
Participants	130 participants with non‐surgically‐treated proximal humeral fractures
Interventions	1. One week of sling immobilisation 2. Three weeks of sling immobilisation
Outcomes	Follow‐up: 1 year (also 3 months) Pain (analogue pain scale), Constant score, secondary surgery Fracture displacement
Starting date	19 October 2015; ended 20 June 2020
Contact information	Carlos Torrens, MD, Castelldefels, Spain Email: CTorrens@parcdesalutmar.cat
Notes	The trial registration document was updated on 12 March 2019. Response received from Carlos Torrens (8 July 2020) to our request for the current status of publication. This confirmed that they "started enrolling patients in a randomized fashion (group I 1‐week immobilization / group II 3‐week immobilization) in October 2015". The last participant was enrolled in May 2018; in total they enrolled "152 patients". They had completed the one‐year follow‐up and sent the abstract to the European Federation of National Associations of Orthopaedics and Traumatology (EFORT) meeting in 2020 (however, this meeting was cancelled due to COVID‐19). In May 2020, they ended the 2‐year follow‐up and were currently updating the Excel database. They hope to submit for publication by October or November 2020. Carlos Torrens provided a copy of an extended abstract and draft results for the 1‐year follow‐up on 10 July 2020; we decided we should wait on the full publication of this trial before inclusion. Top‐up search conducted in November 2021 identified a full trial report and an abstract; both are listed under Z‐TUp Martinez 2021.