1990 The Roper-Day total shoulder replacement

Description: A simple unconstrained shoulder prosthesis has been used in 22 patients (25 shoulders) with incapacitating pain and severely damaged joints who, because of age or generalised rheumatoid disease, have limited functional requirements. All reported good and lasting pain relief. Improvement in range of movement was modest, but there was marked improvement in function. In this group of patients, rotator cuff damage is common, but does not preclude a satisfactory result.
The Roper-Day total shoulder replacement. Roper BA, Paterson JM, Day WH. J Bone Joint Surg Br. 1990 Jul;72(4):694-7