Dislocation of Rotating Hinge Total Knee Prostheses

by William G. Ward, David Haight, Paul Ritchie, Stan Gordon, and Jeffrey J. Eckardt

J Bone Joint Surg AmVolume 85(3):448-453

March 1, 2003

©2003 by The Journal of Bone and Joint Surgery, Inc.

This photograph shows (left to right and top to bottom) the central rotational components manufactured by Howmedica, Intermedics, Johnson and Johnson (S-ROM), Techmedica, Wright

Medical Technology/Dow Corning Wright, and Biomet.

William G. Ward et al. J Bone Joint Surg Am 2003;85:448-453

©2003 by The Journal of Bone and Joint Surgery, Inc.

These line diagrams illustrate the minimal varus-valgus toggle or tilt associated with a long stem with a minimal taper compared with the increased varus-valgus toggle or tilt associated with a

short, more tapered stem under similar conditions (25 mm) of jo...

William G. Ward et al. J Bone Joint Surg Am 2003;85:448-453

©2003 by The Journal of Bone and Joint Surgery, Inc.

Distraction-angular displacement curves for each of the knee designs.

William G. Ward et al. J Bone Joint Surg Am 2003;85:448-453

©2003 by The Journal of Bone and Joint Surgery, Inc.