1. From the Department of Orthopaedic Surgery, University of New Mexico Hospital, Albuquerque, New Mexico.
2. Associate Professor, Department of Orthopaedic Surgery, University of New Mexico Hospital, 2211 Lomas Blvd. N.E., Albuquerque, NM 87106. To whom requests for reprints should be addressed.
3. Resident Physician, University of New Mexico, Department of Orthopaedics.