###Human: What are the chances of re-tearing of acromioclavicular joint after surgery using cadaver tendon? ###Assistant: Hi. There is a high likely chance since you are symptomatic (pain and swelling). Subjecting to vigorous exercise and history of previous surgery adds to the suspicion. It is better you get evaluated and treated earlier. Though cadaver tendons are stronger and it is been 1.5 years. It can never equate your original strength. First get your pain and swelling down with analgesics and get an X-ray. If no bony injury and pain persisting, get an MRI done. X-ray followed by MRI shoulder if needed. Acromino-clavicular joint dislocation. Analgesics and anti-inflammatory followed by evaluation.