NCT01600326.

Trial name or title	A prospective comparison of ultrasound guided percutaneous platelet rich plasma injection versus tenotomy for treatment of gluteus minimus and medius tendinosis
Methods	Study design: randomised trial Random sequence generation: not reported Allocation concealment: not reported Masking: open label
Participants	Location: University of Michigan Hospital Target sample size (N): 30 Inclusion criteria: adult subjects with a diagnosis of tendinosis of the hip referred to Dr Jacobson for the treatment of tendinosis by tenotomy Exclusion criteria: not reported
Interventions	PRP: ultrasound‐guided percutaneous PRP injection (methods not reported) Controls or placebo or no intervention (standard care): tenotomy (alone)
Outcomes	Primary outcomes: pain Secondary outcomes: effectiveness of PRP injection Timing of outcomes measurement: 15 days, and 30 days after intervention
Starting date	Main ID: NCT01600326 Date of registration: 1 May 2012 Last refreshed on: 17 July 2013 Date of first enrolment: July 2010 Status: recruiting participants
Contact information	Name: Jon Jacobson, MD Address: University of Michigan Hospital, USA Telephone: +1 734 9364365 Email: jjacobsn@umich.edu Affiliation: University of Michigan Hospital
Notes