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The Journal of Bone and Joint Surgery (American) 83:S104-115 (2001)
© 2001 The Journal of Bone and Joint Surgery, Inc.

Scientific Article

In Vivo Three-Dimensional Determination of Kinematics for Subjects with a Normal Knee or a Unicompartmental or Total Knee Replacement

Douglas Dennis, MD, Richard Komistek, PhD, Giles Scuderi, MD, Jean-Noel Argenson, MD, John Insall, MD, Mohamed Mahfouz, MS, Jean-Manuel Aubaniac, MD and Brian Haas, MD

Douglas Dennis, MD
Richard Komistek, PhD
Mohamed Mahfouz, MS
Brian Haas, MD
Rocky Mountain Musculoskeletal Research Laboratory, 2425 South Colorado Boulevard, Suite 280, Denver, CO 80222

Giles Scuderi, MD
170 East End Avenue at 87th Street, New York, NY 10128

Jean-Noel Argenson, MD
Jean-Manuel Aubaniac, MD
Service de Chirurgie Orthopedique, Hôpital Sainte-Marguerite, 13274 Marseille, CEDEX 09, France

John Insall, MD
Deceased

In support of their research or preparation of this manuscript, one or more of the authors received grants or outside funding from National Science Foundation, Arlington, Virginia, and Zimmer, Warsaw, Indiana. 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.


   Normal Knee
 
Understanding the in vivo motions of human joints has become increasingly important. Researchers have used in vitro (cadavers), noninvasive (gait laboratories), and in vivo (fluoroscopy) approaches to assess human knee motion. Unfortunately, previous attempts have been unable to track the in vivo bearing-surface motion of the medial and lateral condyles of the normal knee in three dimensions. The objective of this study was to use fluoroscopy and computed tomography to accurately determine the three-dimensional, in vivo, weight-bearing motion of the normal knee.

Methods
Five normal knees, clinically determined to have no pain or ligamentous laxity, were analyzed. With use of computed tomography scanning, slices of the femur beginning 6 in (15.2 cm) proximal to the joint line and slices of 6 in of the proximal part of the tibia (1.0-mm slices near the bearing surfaces and 3.0-mm slices elsewhere) were obtained (Fig. 1). Three-dimensional bone models (Fig. 2-A. . . [Full Text of this Article]


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