Conservative Treatment of an Isolated Greater Tuberosity Fracture With Dislocation: Management of Post-Traumatic Subacromial Impingement Syndrome and a Mini-Review of the Literature

This case report evaluates the effectiveness of conservative treatment for an isolated greater tuberosity fracture-dislocation, detailing the treatment process and addressing post-traumatic subacromial impingement syndrome with a mini-review of the literature. A 26-year-old male fell from a height, resulting in a self-reduced dislocated shoulder. Examination revealed extensive ecchymosis, pain, and limited motion in the right shoulder. Radiological assessments showed an isolated greater tuberosity fracture, partial tears of the supraspinatus and subscapularis muscles, a suspected ALPSA lesion, and periarticular effusion. Initial treatment included a shoulder sling, passive elbow and wrist exercises, and pendulum exercises starting in the second week. At six weeks, persistent pain prompted TENS therapy and advanced rehabilitation exercises. At three months, the patient continued to experience pain and restricted shoulder movement. An MRI ruled out labral pathology, and a shoulder ultrasound revealed post-traumatic subacromial bursitis, leading to a diagnosis of subacromial impingement. A diagnostic ultrasound-guided injection of prilocaine into the subacromial bursa significantly improved the range of motion and alleviated pain within one hour. Treatment recommendations included avoiding overhead activities, NSAIDs, and continued rehabilitation. By six months, the patient had achieved a pain-free range of motion of 180 degrees. This case demonstrates that conservative treatment and appropriate rehabilitation can effectively manage isolated greater tuberosity fractures and associated glenohumeral joint dislocations. Early diagnosis and suitable rehabilitation strategies for post-traumatic subacromial impingement syndrome positively influenced the patient's recovery. Given the patient's youth and swimming background, steroid injections were avoided due to potential complications, with successful recovery achieved through NSAIDs, overhead activity restriction, and rehabilitation.