European Journal of Biomedical and Pharmaceutical Sciences

A STUDY OF MORPHOLOGICAL PATTERNS OF GLENOID CAVITY OF SCAPULA IN A NIGERIAN POPULATION

Ugwa, Okezie Chinedu, Oladipo Gabriel Sunday, Igbemi Mathias Akama, Ekeneokot, Utoon Ekeneokot

ABSTRACT

Background: An understanding of variations in normal anatomy of the glenoid cavity is a prerequisites for better understanding of the mechanics of shoulder joint and shoulder joint arthroplasty. Aim: The aim of this study is to determine the morphology and morphometry of the glenoid cavity in adult dry human scapulae in South-South Nigeria. Materials and Methods: A total of 103 adult dry undamaged scapulae (49 left side, 54 right side) were selected from the osteology museum of the Departments of Anatomy University of Port Harcourt Rivers state, Niger Delta University and Madonna University. The shapes of the glenoid were evaluated. All the linear measurements were taken by using digital Vernier caliper. Parametric variables were expressed in terms of mean and standard deviation while non-parametric variables were expressed in terms of percentage. Paired t test was used to compare the observations of right and left sided glenoid cavity. The data was analysed using the SPSS Software (2018 version). P values ˂0.05 was considered significant. Results: The present study showed the inverted comma shaped glenoid cavity was the most common type. This study showed the mean superior inferior diameter on the right to be 40.55±2.61mm and that on the left to be 40.43±2.46mm. The mean anterior posterior diameter -1 on the right was 26.68±2.52mm and that on the left was 26.49±2.45mm.The right mean antero-posterior diameter-2 on the right glenoid was 18.93 ± 2.20mm and that of the left glenoid was 18.52 ± 1.73mm. Discussion: There was no statistical difference between the left and right scapulae. The AP-2 diameter and the glenoid cavity index (GCI) of the glenoid cavity is significantly affected by the shape. Conclusion The sound knowledge of various parameters of glenoid cavity is important for the anatomists, anthropologists, orthopaedist and prosthetists.

Keywords: Scapular, Glenoid, Arthroplasty.