Objective: To compare the exposure of the coronoid process, anteromedial facet, and anterior band of the medial collateral ligament using the flexor carpi ulnaris (FCU)-splitting approach with the Taylor-Scham approach modified with an ulnar nerve transposition.
Methods: Thirty approaches were performed on 15 fresh cadavers using a randomized cross-over design and standardized incision. Access to key anatomic landmarks was assessed, and a calibrated digital image was taken from the surgeon's best perspective of each approach. Images were analyzed using ImageJ (National Institutes of Health) software to calculate the area of osseous exposure.
Results: All key anatomic landmarks were visualized using both approaches. The average area of exposure for the Taylor-Scham was 19.5 cm 2 compared with 13.6 cm 2 for the FCU-splitting ( P < 0.0001). The distal extent of the FCU-splitting approach is limited by the ulnar nerve and its branches to the humeral head of the FCU.
Conclusion: The Taylor-Scham approach provides a more extensile exposure of the anteromedial coronoid and proximal ulna than the FCU-splitting approach while avoiding cross-tensioning of the ulnar nerve.
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