The posterior glenohumeral dislocation occurs in 2% to 5% of all shoulder dislocations. Reverse Hill Sachs Lesion is the most frequently associated lesion and its found in more than 80% of the posterior dislocations. The treatment of this pathology ranges from conservative treatment to reconstructions with graft or arthroplasty in defects greater than 40%. Objective. The aim of this work is to describe the surgical technique of reconstruction of a reverse Hill Sachs lesion of 40-50% with allograft in a 63-year-old male patient with good quality of life. Material and methods. A 63-year-old patient with a posterior general glenohumeral dislocation with a reverse Hill Sachs lesion of approximately 40%, who is treated with a allograft reconstruction. We record the clinical results and functional results using Constant and Rowe scales. Results. After 11 months of follow-up, the patient presented good quality of life, without pain. Presenting an active / passive mobility of flexion 120º / 150º, abduction 100º / 120º, external rotation until neck with back elbow, internal rotation up to L5. In terms of functional assessment scales, we found values on the Rowe scale of 70 points and a Constant scale of 77 points.Conclusions. This technique is an option for the treatment of reverse Hill Sachs lesions with humeral head injury between 20% and 40% and have good results in the medium term, in patients with good quality of life.

The posterior glenohumeral dislocation occurs in 2% to 5% of all shoulder dislocations. Reverse Hill Sachs Lesion is the most frequently associated lesion and its found in more than 80% of the posterior dislocations. The treatment of this pathology ranges from conservative treatment to reconstructions with graft or arthroplasty in defects greater than 40%. Objective. The aim of this work is to describe the surgical technique of reconstruction of a reverse Hill Sachs lesion of 40-50% with allograft in a 63-year-old male patient with good quality of life. Material and methods. A 63-year-old patient with a posterior general glenohumeral dislocation with a reverse Hill Sachs lesion of approximately 40%, who is treated with a allograft reconstruction. We record the clinical results and functional results using Constant and Rowe scales. Results. After 11 months of follow-up, the patient presented good quality of life, without pain. Presenting an active / passive mobility of flexion 120º / 150º, abduction 100º / 120º, external rotation until neck with back elbow, internal rotation up to L5. In terms of functional assessment scales, we found values on the Rowe scale of 70 points and a Constant scale of 77 points.Conclusions. This technique is an option for the treatment of reverse Hill Sachs lesions with humeral head injury between 20% and 40% and have good results in the medium term, in patients with good quality of life.