Insertion anatomy of the pectoralis major tendon.

BACKGROUND: Pectoralis major tendon tears are encountered in young active patients. METHODS: In 10 fresh cadaveric shoulders we measured-1. Proximal to distal insertion width of the pectoralis major tendon.2. The distance of the superior border of the tendon from the supero-medial tip of the greater tuberosity (GT). RESULTS: The average insertion width was 46 mm. The average distance between the superior border of the tendon and the tip of the GT was 48.5 mm. CONCLUSION: The superior border of the tendon should be repaired with two anchors at a distance of 48.5 mm from the tip of the GT so as to cover a width of 46 mm.