Increased postoperative deltoid signal seen after suprapectoral biceps tenodesis: potential risk to the anterior branch of the axillary nerve

Over one third of patients in our cohort had MRI evidence of axillary nerve branch injury as seen on proton density fat-saturated MRI sequences postoperatively. The distal arthroscopic portal for a suprapectoral biceps tenodesis may place anterior terminal branches of the axillary nerve at risk for injury. Additional investigation and strategies for avoidance of nerve injury in this area should be pursued.