Garet C Comer1, Susan J Clark1, Jeffrey Yao2. 1. Department of Orthopaedic Surgery, Robert A. Chase Hand and Upper Extremity Center, Stanford University School of Medicine, Redwood City, CA. 2. Department of Orthopaedic Surgery, Robert A. Chase Hand and Upper Extremity Center, Stanford University School of Medicine, Redwood City, CA. Electronic address: jyao@stanford.edu.