*Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR

†Hospital for Special Surgery, New York, NY

Consultant for Novastep.

The authors declare no conflict of interest.

Address correspondence and reprint requests to Bopha Chrea, MD, Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239. E-mail: [email protected].