Abstract
Biceps brachii (BB) tendon rupture is frequent in young males and may require surgical repair. Non-anatomic reinsertion leads to loss of strength in supination. The main aim of the present study was to describe the anatomy of the osseous footprint of the distal BB tendon. The dimensions of the footprint of the distal BB insertion were analyzed in 100 dry cadaver radii, using MicroScribe 3D software. Insertion area, assimilated to an ellipse, was calculated from 4 points (medial, lateral, cranial and caudal) determining the two axes of the ellipse. Mean footprint length, width and area were 18 mm (range, 7–24 mm), 9 mm (range, 4–15 mm), and 129 mm2 (range, 46–266 mm²), respectively. Intra- and inter-observer correlation coefficients were satisfactory: κ = 0.75 and κ = 0.7, respectively. The present study reported BB footprint dimensions in 100 radii, providing a basis to guide surgical treatment of distal BB tendon rupture. Non-anatomical restoration of the BB tendon footprint leads to poorer clinical and biomechanical results; precise knowledge of the footprint is necessary for anatomical repair.
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