Orthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, New South Wales, Australia

G.A.C.M.: Editorial or governing board—Journal of Shoulder and Elbow Surgery, Shoulder and Elbow, and Techniques in Shoulder and Elbow Surgery; Smith & Nephew—paid consultant; research support. The remaining authors declare no conflict of interest.

Reprints: George A.C. Murrell, MD, DPhil, Orthopaedic Research Institute, Level 2, 4-10 South Street, Kogarah, Sydney, NSW 2217, Australia (e-mail: [email protected]).