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TECHNICAL PAPERS

A New Method to Measure Post-Traumatic Joint Contractures in the Rabbit Knee

[+] Author and Article Information
Kevin A. Hildebrand

Department of Surgery, University of Calgary, Calgary, AB Canada T2N 4N1

Michael Holmberg

Department of Civil Engineering, University of Calgary, Calgary, AB Canada T2N 4N1

Nigel Shrive

Department of Surgery and Department of Civil Engineering, University of Calgary, Calgary, AB Canada T2N 4N1

J Biomech Eng 125(6), 887-892 (Jan 09, 2004) (6 pages) doi:10.1115/1.1634285 History: Received December 31, 2002; Revised June 02, 2003; Online January 09, 2004
Copyright © 2003 by ASME
Topics: Knee , Motion
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References

Figures

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(a) Sagittal schematic. The femur clamp is rigidly attached to the pinion gear. The tibia clamp is free to rotate in the sagittal plane (flexion-extension) and along its axis (internal-external rotation), and to translate longitudinally (compression-distraction). (b) Coronal schematic. The tibia clamp is free to rotate in the coronal plane (varus-valgus).
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(a) Adult female rabbit right knee specimen mounted for testing. (1) Femur clamp. (2) Tibia clamp. Coupled knee extension-flexion rotation and anterior-posterior translation are shown (grey arrows). (b) A demonstration of varus-valgus rotation coupled with medial-lateral translation (white arrows) and the independent degrees-of-freedom knee compression-distraction and internal-external rotation (grey arrows). (1) Femur clamp. (2) Tibia clamp.
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Comparison of normal right and left knee extension (Objective 2). Average of five cycles
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Experimental (Contracture) versus unoperated (Control) knees (Objective 4)

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