*2.2. Operative Technique*

The operative technique was performed in a beach-chair position under general anesthesia with an inter-scalene block. The surgical approach was almost exclusively deltopectoral and anterosuperior in 2 cases (2%). Tenodesis and subscapularis repair were systematic. For 2 patients (2 HA), the cuff tear was also repaired while undergoing the arthroplasty. The type of arthroplasty was left to the operator's choice and to the severity of the osteoarthritis.
