Key points are not available for this paper at this time.
Submitted: March 16, 2011, Revised: December 12, 2011, Accepted: December 15, 2011. From the University of Washington/Harborview Medical Center, Seattle, Washington. Address for reprints: Julius A. Bishop, MD, Department of Orthopaedic Surgery, Stanford University, 450 Broadway Street, Redwood City, CA 94063; email: email protected.
Bishop et al. (Fri,) studied this question.