The Journal of Bone and Joint Surgery (American). 2006;88:182-188.
doi:10.2106/JBJS.F.00588
© 2006 The Journal of Bone and Joint Surgery, Inc.
Why Posterior Cruciate-Retaining and Substituting Total Knee Replacements Have Similar Ranges of Motion
THE IMPORTANCE OF POSTERIOR CONDYLAR OFFSET AND CLEANOUT OF POSTERIOR CONDYLAR SPACE
Wayne M. Goldstein, MD,
David J. Raab, MD,
Thomas F. Gleason, MD,
Jill Jasperson Branson, RN, BSN and
Kimberly Berland, CST, FA
Corresponding author: Jill Jasperson Branson, RN, BSN 9000 Waukegan
Road, Morton Grove, IL 60053
| The first 150 words of the full text of this article appear below. |
 |
Introduction
|
|---|
Fluoroscopic studies of cruciate-retaining total knee replacements have
shown paradoxical anterior slide in
flexion1. Without
rollback, the tibial component may impinge earlier on the posterior part of
the femur. Cruciate-retaining and cruciate-sacrificing total knee replacements
have been reported to have similar ranges of
motion2. It is
possible that the position and function of the tibial post that substitutes
for the posterior cruciate ligament in the cruciate-sacrificing implant may
not optimize rollback enough to create a clinically important difference
between these two designs. Recent newer high-flexion knee designs have moved
the post posteriorly and extended the available posterior condylar surface
proximally for greater articulation in flexion. These designs may demonstrate
a larger flexion difference in the future. With modern implant designs, which
began with the cementless porous-coated cruciate-retaining components, less
posterior condylar bone was resected than was the case with early condylar
implants. Removal of less bone was a . . . [Full Text of this Article]

CiteULike Connotea Del.icio.us Technorati What's this?
|