From the Department of Orthopaedic Surgery, University of Virginia (Dr. Tagliero, Dr. Su), Charlottesville, VA (Tagliero and Su), the University of Maryland Shore Regional Medical Center, Easton, MD (Foster), and the Ferrell-Duncan Clinic, Springfield, MO (Melugin).

None of the following authors or any immediate family member has received anything of value from or has stock or stock options held in a commercial company or institution related directly or indirectly to the subject of this article: Tagliero, Foster, Melugin, and Su.

The work was performed at the University of Virginia, Charlottesville, VA.