Human bicipital groove: a morphometric study on dry humerus

Abstract

Objectives: The aim of this study is to evaluate the morphometry of the bicipital groove on dry humeri, which is closely associated with the long head of the biceps tendon, a key component in shoulder biomechanics. Methods: This study involved 109 adult human dry humeri (56 right, 53 left). The humerus length (HL), bicipital groove length (BGL), bicipital groove width (BGW), bicipital groove depth (BGD), opening angle (OA) and medial wall angle (MWA) were measured. Results: The mean value of HL was measured 30.97±2.01 cm and the mean value of BGL was 89.70±8.09 mm. The mean value of BGW was 10.31±1.51 mm and BGD was 3.98±0.79 mm. The mean value of OA was 99.85±14.53° and MWA was 42.31±8.25°. No significant differences were observed between the right and left sides in the measured parameters. Positive correlations were found between BGW and BGD, BGW and OA, MWA and BGD, and HL and BGL. Negative correlations were observed between BGL and BGD, OA and BGD, and MWA and BGW. Conclusion: We believe the detailed morphometric evaluation of the bicipital groove presented in this study provides valuable insights into the pathologies of the long head of the biceps tendon and its implications for shoulder arthroplasty.

Keywords

• anatomy
• bicipital groove
• long head of biceps
• morphometry

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