The terrible triad of the shoulder: injury characteristics and outcomes of axillary nerve reconstruction

We aimed to describe outcomes, including shoulder motion, deltoid strength and Disabilities of Arm, Shoulder and Hand scores, in 19 patients with terrible triad shoulder injuries (anterior shoulder dislocation, rotator cuff tear or greater tuberosity fracture, and axillary nerve injury) who required axillary nerve reconstruction. The type of nerve surgery (grafting vs. nerve transfer), demographic factors and injury characteristics were not significantly associated with outcomes. The mean postoperative abduction and Disabilities of Arm, Shoulder and Hand score were 95° and 28, respectively. Patients with rotator cuff tears had a higher Disabilities of Arm, Shoulder and Hand score (more disability) than those with isolated greater tuberosity fractures. We conclude that spontaneous recovery of the axillary nerve may not occur in patients with a terrible triad injury. Functional outcomes after axillary nerve repair are poor with respect to motion, strength and patient-reported outcomes compared with reported results for axillary nerve reconstruction in the absence of rotator cuff injury.<b>Level of evidence:</b> IV.