Background- Acromioclavicular (AC) joint injuries most commonly occur in young males after direct damage at the acromion1. Surgical treatment for types IV through VI, whereas management of type III injuries is more controversial. The overall complication rate is high (14%)2. Technique for open repair of a chronic AC joint separation using a semitendinosus allograft using the cerclage for enhanced fixation. Aims And Objectives- To study the functional outcome of acromioclavicular ligament reconstruction using semitendinosus graft. To provide a pain-free, mobile shoulder. Methodology- Design: Prospective study Period: JAN 2021 to JULY 2022 Sample size: 14 cases were taken up for our study. FUNCTIONAL EVALUATION: Two scoring systems were used: (a) ASES SCORE(b)CONSTANT SCORE Observation&Results—POST-OP ASES SCORES INCREASED SIGNIFICANTLY WHEN COMPARED TO PRE-OP POST-OP CONSTANT SCORE INCREASED SIGNIFICANTLY WHEN COMPARED TO PRE-OP