Correlation of body anthropometry and coracoid dimensions in Indian population

Background: Coracoid is important in many surgeries. Coracoid dimensions have been studied earlier, but its correlation with body anthropometry has not been studied till now. At our institute, during Latarjet procedure, we often see that length of coracoid is sometimes smaller, though the patient is of moderate to good build. This led to our interest in this study. Materials and Methods: One hundred computed tomography scans (male/female = 50/50) of Indian population were analyzed for coracoid dimensions namely total length, base length, tip height, base height, tip length, tip width, midpoint width. Body anthropometry like height, weight, body mass index of respective patients was also calculated. Our aim is to compare male to female differences in coracoid dimensions and to determine the effect of body anthropometry on coracoid dimensions. Results: The coracoid dimensions were total length 3.8 centimeter (cm) (standard deviation [SD] ± 0.47, range 3–5.1 cm), tip length 2 cm (SD ± 0.34, range 1.39–3.25 cm), tip width 1.2 cm (SD ± 0.2, range 0.67–1.7 cm), tip height 0.97 cm (SD ± 0.18, range 0.57–1.43 cm), base length 1.35 cm (SD ± 0.3, range 0.5–2.5 cm), base height 1.4 cm (SD ± 0.31, range 0.7–2.2 cm), and midpoint width 1.27 cm (SD ± 0.23, range 0.7–1.9 cm). The coracoid is larger in males than in females. We observed a negative correlation between height and all coracoid dimensions. Conclusion: Patient's height has a negative correlation with coracoid dimensions. A tall individual may not always have a large coracoid and surgeon must be prepared for alternatives in case of a shorter coracoid.