In vivo quantification of the cat patellofemoral joint contact stresses and areas

Ronsky, Janet L.; Herzog, Walter; Brown, Thomas D.; Pedersen, Douglas R.; Grood, Edward S.; Butler, David L.

Affiliations

¹Departments of Mechanical Engineering and Physical Education, The University of Calgary, Calgary, Alberta, Canada

²Department of Orthopaedic Surgery, The University of Iowa, Iowa City, Iowa, U.S.A.

³Noyes-Giannestras Biomechanics Laboratory, Department of Aerospace Engineering and Engineering Mechanics, The University of Cincinnati, Cincinnati, Ohio, U.S.A.

Abstract and keywords

A new method for in vivo measurement of patellofemoral joint contact areas, stresses, and patellar displacements, with joint loading approximating physiologic conditions was developed. Joint contact measurements were obtained using pressure sensitive film inserted directly between articular joint surfaces. Two-dimensional joint kinematics were measured using a high-speed video based motion analysis system. Joint loading, provided by quadriceps muscle stimulation, was measured with an implantable force transducer (IFT). Variations in joint mechanics as a function of joint flexion angle, joint loading and joint stability (anterior cruciate ligament intact or transected) were determined for four adult male cats. The contact measurements obtained with the pressure sensitive film displayed high repeatability with a standard error of ± 6.8% of the mean value of the median pressure and ± 4.4% of the mean contact area value. Substantial differences in joint mechanics were reliably detected with the new technique. The influence of experimental procedures, such as incisions in the joint capsule and insertion of pressure sensitive film between the articular surfaces, produced minimal changes in the joint kinematics during muscular contraction.

Keywords: Joint; Contact pressure; Patellofemoral joint

Links

DOI: 10.1016/0021-9290(94)00153-U

PubMed: 7673264

WoS: A1995RF33300008

History

Revised: 1994-10-30

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Cited By (23)

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1996	Hasler EM. In-Vivo Knee Loading Before and After ACL Transection in an Animal Model [PhD thesis]. Calgary, AB: University of Calgary; September 1996.
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2001	Boyd SK. Microstructural Bone Adaptation in an Experimental Model of Osteoarthritis [PhD thesis]. Calgary, AB: University of Calgary; January 2001.
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2002	Baker SN. In-Vivo Quantification of Patellofemoral Joint Contact Force Using a Mathematical Model [Master's thesis]. Calgary, AB: University of Calgary; January 2002.
2002	Couillard S. Cartilage Deformation of the Feline Patellofemoral Joint Obtained from Laser Scanning [Master's thesis]. Calgary, AB: University of Calgary; April 2002.
2003	Han S-K. Articular Cartilage Modeling in the 3-D Patellofemoral Joint Contact [Master's thesis]. Calgary, AB: University of Calgary; June 2003.
2003	Pardy CK. The Effects of Doxycycline on the Mechanical and Morphometric Properties of Early and Established Osteoarthritic Bone in a Canine Model Following Anterior Cruciate Ligament Injury [Master's thesis]. Calgary, AB: University of Calgary; October 2003.
2004	Clark AL. Heterogeneous Patellofemoral Articular Cartilage Mechanical and Biological Response to Compression and Anterior Cruciate Ligament Transection [PhD thesis]. Calgary, AB: University of Calgary; April 2004.
2010	Tapper JE. Dynamic in Vivo Kinematics in an Ovine Stifle Joint Model of Osteoarthritis [PhD thesis]. Calgary, AB: University of Calgary; March 2010.
2010	Youssef AMRM. The Development of Botulinum Type-a Toxin-Induced Muscle Weakness Model of Osteoarthritis [PhD thesis]. Calgary, AB: University of Calgary; December 2010.
2011	Bourne DA. Chondrocyte Viability After in Vivo Muscular and Impact Loading [PhD thesis]. Calgary, AB: University of Calgary; May 2011.
2013	Sawatsky AJ. The Effect of Vastus Medialis Transection on Patellofemoral Contact Pressure and Patellar Tracking [Master's thesis]. Calgary, AB: University of Calgary; May 2013.
2020	Han S-w. Changes in Patellofemoral Joint Mechanics in the Presence of Quadriceps Muscle Imbalance [PhD thesis]. Calgary, AB: University of Calgary; August 2020.
2012	Lalone EA. An Image-Based Tool to Examine Joint Congruency At the Elbow [PhD thesis]. University of Western Ontario; 2012.