Shoulder: Trauma

Risk of axillary nerve injury during percutaneous proximal humerus locking plate insertion using an external aiming guide

Saran N, Bergeron SG, Benoit B, et al (McGill Univ Health Centre, Montreal, Quebec, Canada; Univ of Montreal, Quebec, Canada) Injury 41:1037-1040, 2010^§

Abstract

Objectives

The purpose of this study was to determine which screws could be safely inserted percutaneously into a proximal humerus locking plate using a new external aiming guide without injuring the axillary nerve. We also sought to evaluate that all the screws could be accurately inserted in a locked position with the external guide.

Methods

Eight cadaveric specimens were implanted with a proximal humerus locking plate using a minimally invasive direct-lateral deltoid splitting approach using an attached external aiming guide for screw insertion. The anatomic proximity of the axillary nerve to the guidewires and screws was measured following soft tissue dissection and inspection of the nerve.

Results

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