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The Journal of Bone and Joint Surgery (American) 83:S51-55 (2001)
© 2001 The Journal of Bone and Joint Surgery, Inc.

Scientific Article

Range of Motion of Posterior-Cruciate-Substituting Total Knee Replacements: The Effect of Bearing Mobility

Brian Haas, MD, Douglas A. Dennis, MD, Richard D. Komistek, PhD, Jamey T. Brumley, II, MS and Curt Hammill

Brian Haas, MD
Douglas A. Dennis, MD
Richard D. Komistek, PhD
Jamey T. Brumley II, MS
Curt Hammill
Rocky Mountain Musculoskeletal Research Laboratory, 2425 South Colorado Boulevard, Suite 280, Denver, CO 80222

In support of their research or preparation of this manuscript, one or more of the authors received grants or outside funding from DePuy, a Johnson and Johnson company, and from Radiographic and Data Solutions. None of the authors received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.

The first 150 words of the full text of this article appear below.


   Introduction
 
A satisfactory postoperative range of motion is an important component of a successful result of total knee arthroplasty. Previously, we conducted an analysis to compare the weight-bearing and non-weight-bearing ranges of motion in subjects with a fixed-bearing posterior-cruciate-retaining or posterior stabilized total knee replacement1. The purpose of this follow-up study was to determine the difference between the weight-bearing and non-weight-bearing ranges of motion in patients with either a mobile-bearing posterior stabilized total knee replacement or a fixed-bearing posterior stabilized total knee replacement. A secondary goal of this study was to assess if the weight-bearing range of motion was affected by the implant type—that is, a fixed-bearing or a mobile-bearing posterior stabilized total knee replacement.


   Materials and Methods
 
The range of motion of the knee in forty-six patients was evaluated with use of video fluoroscopy. Two patient subgroups—those with a fixed-bearing posterior stabilized total knee replacement (Sigma PS; DePuy, a Johnson and Johnson company) . . . [Full Text of this Article]


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