Glenoid Morphometry in a Kenyan Population With Relevance to Shoulder Arthroplasty

Abstract

Background: A basic understanding of the glenoid anatomy and the various variations in different populations is critical in glenoid resurfacing and optimal utilization of glenoid components. The glenoid measurements that are crucial in shoulder replacement are glenoid height, glenoid width, glenoid inclination, and glenoid version angles. Shoulder replacement surgery has been used successfully for the treatment of degenerative conditions around the glenohumeral joint to restore normal joint movement. The aim of replacement surgery is to restore the native shoulder complex kinetics. It is therefore important to understand the native morphology of the articulating surfaces as it gives guidance in selection of suitable endoprosthesis while restoring the native biomechanics of the joint. Several cadaveric studies done have shown a considerable natural variability in the glenoid parameters. This variability affects design of prosthesis, instrumentation techniques and intraoperative implantation of the glenoid components Recognition of various patterns of glenoid wear is important in preoperative surgical planning in patients undergoing shoulder arthroplasty. Study objective: To determine the glenoid morphometry in a Kenyan population with relevance to shoulder replacement. Materials and methods: An osteological cross-sectional study consisting of one hundred and fifty scapulae derived from the Osteological collection of the National Museums of Kenya. Ethical approval was sought from The University of Nairobi and Kenyatta National Hospital, Ethics and Research Committee (KNH/UON-ERC)........................