Clinical trial Recruiting at 10 sites Observational Ages 17 to 50

Comparing surgical methods for shoulder instability with bone loss

Official title: Open Versus Arthroscopic Stabilization of Shoulder Instability With Subcritical Bone Loss: The OASIS Trial

Run by University of Pittsburgh · NCT04809064 · Data updated 2026-11-12

This study tests which of three different shoulder surgeries works best for military and civilian patients with some bone loss, to help them recover faster and get back to their activities.

Quick facts

Study typeObservational
Ages17 Years to 50 Years
SexAll
Enrollment450 (estimated)
SponsorUniversity of Pittsburgh
Academic / other
Locations15 sites (Tempe, Arizona and 14 other locations)
StatusRecruiting
StartedJanuary 24, 2022
Main results expectedSeptember 30, 2027
Study endsSeptember 30, 2027
Registry record updatedJune 8, 2026
Trial IDNCT04809064 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are military personnel and civilians aged 17 to 50 who have experienced a traumatic anterior shoulder dislocation with 10-20% glenoid bone loss.

Probably not a fit

Patients with chronic multi-directional instability, significant concurrent shoulder injuries, or other serious medical conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the effectiveness of three surgical procedures for treating shoulder instability in military personnel and civilians with 10-20% glenoid bone loss. Participants will be randomly assigned to receive either arthroscopic Bankart repair with remplissage, open Bankart repair, or Latarjet procedure, followed by a tailored rehabilitation program. The study aims to optimize recovery time and improve patient-reported outcomes related to physical function and return to duty or sports activities.

Why it matters

Potential benefit: If successful, this study could lead to improved surgical options and rehabilitation strategies for patients with shoulder instability, enhancing their recovery and return to active lifestyles.

How similar studies have gone: Other studies have shown promising results with similar surgical approaches for shoulder instability, indicating potential for success in this trial.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Civilians and military personnel ages 17 to 50
* Traumatic anterior shoulder dislocation
* Associated subcritical bone loss between 10-20% less the glenoid width quantified by standard of care CT scan, MRI, or 3D-MRI scan
* Had shoulder instability surgery using either 1) arthroscopic Bankart repair with remplissage of Hill-Sachs lesion; 2) open Bankart; or 3) Latarjet

Exclusion Criteria:

* Chronic, non-traumatic multi-directional instability based on clinical exam
* Concurrent shoulder injury in the involved shoulder (e.g., rotator cuff tears, motor nerve pathologies, osteoarthritis of a Samilson-Prieto grade \>2)
* Have a history of shoulder surgery in the involved shoulder (prior instability surgery that included any of the following and the planned procedure would be a repeat of the index procedure: 1) arthroscopic Bankart repair with a remplissage of Hill-Sachs lesion, 2) open Bankart, or 3) Latarjet \[previous isolated arthroscopic Bankart repair only would not be an exclusion criterion\], rotator cuff repair, intra-articular soft tissue surgery); rotator cuff repair, intra-articular soft tissue surgery)
* Prior rotator cuff procedure on involved shoulder (including intra-articular soft tissue surgery
* Humeral sided bone lesions (Hill-Sachs lesion) that is sufficiently large enough to render the lesion "off-track" even after a bony augmentation procedure would be performed
* Neuromuscular, neurological and other movement control pathologies including seizures
* Vascular injury associated with the shoulder trauma that compromise adequate/normal healing or interferes with usual course of care
* Traumatic brain injury or any condition that would preclude the ability to comply with post-operative guidelines
* Cartilage lesion finding in the involved shoulder that would interfere with usual course of care
* Known pregnancy at time of imagining and/or surgery based upon standard of care testing procedures
* Any issue with the contralateral shoulder that would preclude participation in research procedures
* Any condition in the opinion of the investigator/clinician that would preclude or limit full participation in study activities
* Absence of a fixed address or no means of contact
* Known inability to be available at all follow-up time points
* Does not plan to return to pre-injury levels of work, sports or military duty

Where it's running

  • Mayo Clinic
    Tempe, Arizona, United States
    Recruiting
  • US Naval Health Clinic (Academy)
    Annapolis, Maryland, United States
    Recruiting
  • University of North Carolina at Chapel Hill
    Chapel Hill, North Carolina, United States
    Recruiting
  • Duke University
    Durham, North Carolina, United States
    Recruiting
  • Wake Forest University
    Winston-Salem, North Carolina, United States
    Recruiting
  • Ohio State University, Wexner Medical Center
    Columbus, Ohio, United States
    Recruiting
Show 9 more locations
  • University of Pittsburgh
    Pittsburgh, Pennsylvania, United States
    Recruiting
  • Rhode Island Hospital - Brown University Health
    Providence, Rhode Island, United States
    Recruiting
  • Vanderbilt University Medical Center
    Nashville, Tennessee, United States
    Recruiting
  • San Antonio Military Medical Center
    Fort Sam Houston, Texas, United States
    Recruiting
  • Naval Medical Center
    San Diego, California, United States
    Active not recruiting
  • Steadman Clinic
    Vail, Colorado, United States
    Active not recruiting
  • University of Connecticut Health Center
    Farmington, Connecticut, United States
    Active not recruiting
  • Walter Reed National Military Medical Center
    Bethesda, Maryland, United States
    Active not recruiting
  • Naval Medical Center Camp Lejeune
    Marine Corps Base Camp Lejeune, North Carolina, United States
    Active not recruiting

Study contacts

  • Principal investigator: Adam Popchak, PhD, PT — University of Pittsburgh
  • Study coordinator: Adam Popchak, PhD, PT
  • Email: ajp64@pitt.edu
  • Phone: (412) 383-6627

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.