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Background: Shoulder joint instability results in great disability and it is possible to get good results of treatment in selected patients in whom intraarticular pathologies are diagnosed and treated appropriately. Aims: To investigate the pathology of unstable shoulder joint and study the effect of arthroscopic stabilization for the management of traumatic anterior glenohumeral instability and success rate of all arthroscopic Bankart repair. Materials and Methods: This prospective study was conducted in a tertiary care hospital of West Bengal in a time span of 1 year, after getting the approval of the Institutional Ethical Committee and informed consent of the patients. Patients aged between 20 and 40 years with post-traumatic recurrent anterior dislocation of the shoulder were included. Patients were operated arthroscopically and followed up. Results were analyzed per the assessment criteria of Rowe scale. Results: Ten percent had fair and 90% had poor Rowe score during preoperative period. Bankart lesion was present in 16 patients out of 20 patients in whom we performed arthroscopic Bankart repair with suture anchors. At last follow up, 13 patients were able to work above shoulder level normally; two patients had mild limitation of work. One patient had moderate type of restriction of activities. This patient had a history of trauma 3 months after operation. Conclusions: Overall 93.75% patients had excellent to good result in the present study. Based on this short series and minimum follow-up we recommended, this method of management for shoulder instability due to Bankart lesion.