The Effect of Arthroscopic Bankart Repair on Anterior-posterior Glenohumeral Translation and Shoulder Proprioception in Patients With Traumatic Anterior Shoulder Instability: a Prospective Cohort Study

Inclusion Criteria: * Age 18-40 years * Unilateral traumatic anterior shoulder instability booked for arthroscopic Bankart repair according to the department's guidelines (extent of symptoms, suffer recurrent dislocations, positive apprehension and relocation test, limited bone loss) * Willing to adhere to the study protocol, herein attend follow-up * The patient must be able to speak and understand Danish * The patient must be able to give written informed consent Exclusion Criteria: * Traumatic instability in the opposite shoulder * For one or both shoulders: posterior, multi-directional or atraumatic instability * For one or both shoulders: traumatic rotator cuff or biceps tendon tear, Superior Labrum from Anterior to Posterior tear (SLAP-lesion) * For one or both shoulders: traumatic fracture of proximal humerus (other than Hill-Sachs lesion), clavicula, scapula (other than glenoid) or dislocation of sternoclavicular or acromioclavicular joints * For one or both shoulders: atraumatic shoulder pathologies (e.g. frozen shoulder, symptomatic osteoarthritis of the shoulder or acromioclavicular joints, acute calcific tendinitis) * Pregnancy * Terminal illness or severe medical illness: American Society of Anesthesiology (ASA) score ≥3.