Convened under the auspicious of esteemed endorsers - ISTA

a lateral center of rotation and approved for use in the United States since 2004. Multiplestudies by the implant design team have documented excellent outcomes and low revision ratesfor the RSP, but other published outcomes data are relatively sparse. The objective of this studyis to report on the complications and early outcomes in the first consecutive 60 RSPs implantedin 57 patients by a single shoulder replacement surgeon between 2004 and 2010. Forty-fourpatients were female and mean age at the time of reverse shoulder arthroplasty was 75 years(range 54 to 92 years). The RSP was used as a primary arthroplasty in 42 shoulders and torevise a failed prosthetic shoulder arthroplasty in 18 shoulders. During the study period, 365shoulder replacements were implanted so that the RSP was used selectively, accounting for only17% of all shoulder arthroplasties (8.4% for 2004-2007, 24.2% for 2008-2010). Most patientshad pseudoparalysis and profound shoulder dysfunction so that mean pre-operative activeforward elevation was to 45°, active abduction to 43°, active internal rotation to the buttock,and the mean pre-operative Simple Shoulder Test (SST) score was 1 out of 12. At final followup,mean active forward elevation had improved to 101° (p