¹Division of Orthopaedics and Rehabilitation, University of California, San Diego, and Veterans Administration Medical Center, La Jolla, California, 92093, U.S.A.

²Division of Orthopaedics, Univerisity of California, San Diego, San Diego VA Medical Center and M & D Coutts Institute for Joint Reconstruction, La Jolla, California 92093, U.S.A.

DOI: 10.1007/978-1-4612-3448-7_14