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

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