The impact of laterality on the morphometric angular features of the scapula

Abstract

Objectives: This study aimed to analyze the angular measurements and morphological characteristics of the scapula, providing insights to enhance surgical interventions and clinical research requiring detailed anatomical knowledge, such as total shoulder arthroplasty, fracture fixation via screw placement, and scapular arthroscopic procedures. Methods: Twenty dry scapula (13 right, 7 left) of unknown age and sex, obtained from the bone archive of the Anatomy Department at Bolu Abant İzzet Baysal University Faculty of Medicine, were analyzed. Angular measurements were conducted using a digital angle gauge. Due to the limited sample size, normality testing was not performed. Statistical comparisons between the right and left scapula were made using the Mann-Whitney U test, with a significance level set at p?0.05. Results: Among the six angular parameters measured, only the lateral angle demonstrated a statistically significant difference between the right and left sides (p=0.033). Conclusion: The findings indicate that, except for the lateral angle, the scapula’s angular measurements are predominantly symmetrical between the right and left sides. The glenoid profile angle (GPA) may serve as a valuable marker for assessing fracture risk in the glenoid fossa, aiding orthopedic surgeons in clinical decision-making. A detailed understanding of scapular morphology is expected to advance both surgical practices and anatomical research.