The Reverse Shoulder Prosthesis for glenohumeral arthritis associated with severe rotator cuff deficiency. A minimum two-year follow-up study of sixty patients. - Frankle M; Siegal S; Pupello D; Saleem A; Mighell M; Vasey M; Frankle, Mark; Siegal, Steven; Pupello, Derek; Saleem, Arif; Mighell, Mark; Vasey, Matthew (Journal of Bone & Joint Surgery, American Volume, 2005)