Midterm results of surface replacement of the shoulder

Abstract

PurposeThis study was undertaken to determine the midterm results of resurfacing hemiarthroplasty of the shoulder, evaluate the inclination of prosthesis and correlate the effect of valgus or varus positioning on clinical outcomes. MethodsBetween 2007 and 2014, fifty-seven humeral head surface replacements were performed in our hospital for the osteoarthritis of shoulder. One patient expired and 6 shoulders were lost to follow-up. Forty-seven patients with 3 patients having bilateral humeral head replacements, were assessed thoroughly at the mean period of 4.4+2.3years (Range 2–9 years). All fifty shoulders were evaluated using the VAS, ASES and Constant and Murley score. ResultsHumeral head surface replacement produced satisfactory results in 96% of the patients at a mean follow-up of 4.4 years. We found that the difference in mean postoperative ASES, Constant and VAS score in normal and valgus inclination angle shoulders was not significant whereas the difference in normal and varus inclination angle shoulders was significant. Three patients had severe pain with VAS score (range 0 to 10) of 7, 5 and 4 postoperatively though in all 3 patient’s inclination angle was normal. No revision surgery was performed till recent follow-up. ConclusionsIn conclusion mid-term outcomes of the uncemented Global C.A.P. resurfacing prosthesis are promising. Inclination of the implant has effect on functional outcome of patients.