Templates of the cartilage layers of the patellofemoral joint and their use in the assessment of osteoarthritic cartilage damage

被引:58
作者
Cohen, ZA
Mow, VC
Henry, JH
Levine, WN
Ateshian, GA
机构
[1] Columbia Univ, Dept Mech Engn, New York, NY 10027 USA
[2] Columbia Univ, Dept Orthopaed Surg, New York, NY 10027 USA
[3] Columbia Univ, Dept Biomed Engn, New York, NY 10027 USA
[4] Texas Tech Univ, Ctr Hlth Sci, Dept Orthopaed, Lubbock, TX USA
关键词
articular cartilage; osteoarthritis;
D O I
10.1016/S1063-4584(03)00091-8
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Objective: To develop a methodology for generating templates that represent the normal human patellofemoral joint (PFJ) topography and cartilage thickness, based on a statistical average of healthy joints. Also, to determine the cartilage thickness in the PFJs of patients with osteoarthritis (OA) and develop a methodology for comparing an individual patient's thickness maps to the normal templates in order to identify regions that are most likely to represent loss of cartilage thickness. Design: The patella and femur surfaces of 14 non-arthritic human knee joints were quantified using either stereophotogrammetry or magnetic resonance imaging. The surfaces were aligned, scaled, and averaged to create articular topography templates. Cartilage thicknesses were measured across the surfaces and averaged to create maps of normal cartilage thickness distribution. In vivo thickness maps of articular layers from 33 joints with OA were also generated, and difference maps were created depicting discrepancies between the patients' cartilage thickness maps and the normative template. Results: In the normative template, the surface-wide mean+/-SD (maximum) of the cartilage thickness was 2.2+/-0.4 mm (3.7 mm) and 3.3+/-0.6 mm (4.6 mm) for the femur and patella, respectively. It was demonstrated that difference maps could be used to identify regions of thinner-than-normal cartilage in patients with OA. Patients were shown to have statistically greater regions of thin cartilage over their articular layers than the normal joints. On average, patients showed deficits in cartilage thickness in the lateral facet of the patella, in the anterior medial and lateral condyles, and in the lateral trochlea of the femur. Conclusions: This technique can be useful for in vivo clinical evaluation of cartilage thinning in the osteoarthritic patellofemoral joint. (C) 2003 OsteoArthritis Research Society International. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:569 / 579
页数:11
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