Anatomical evaluation of a cortical button for distal biceps tendon repairs.

Background: The posterior interosseous nerve (PIN) is at risk for injury during one-incision distal biceps tendon repair using a cortical button. The purpose of this study was to evaluate the proximity of a cortical button to the PIN during one-incision repairs of the distal biceps tendon using human cadaveric models.

Methods: In ten cadaveric elbows the biceps tendon was identified, traced to its insertion, and transected.