Various impact models have been used to study the injury mechanics of blunt trauma to diarthrodial joints. The current study was designed to study the relationship between impactor energy and mass on impact biomechanics and injury modalities for a specific test condition and protocol. A total of 48 isolated canine knees were impacted once with one of three free flight inertial masses (0.7, 1.5, or 4.8 kg) at one of three energy levels (2, 11, 22 J). Joint impact biomechanics (peak load, loading rate, contact area) generally increased with increasing energy. Injuries were typically more frequent and more severe with the larger mass at each energy level. Histological analyses of the patellae revealed cartilage injuries at low energy with deep injuries in underlying bone at higher energies.
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June 2001
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Blunt Injuries to the Patellofemoral Joint Resulting From Transarticular Loading Are Influenced by Impactor Energy and Mass Available to Purchase
Patrick J. Atkinson,
Patrick J. Atkinson
Department of Mechanical Engineering, Kettering University, Flint, MI 48504
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Benjamin J. Ewers and,
Benjamin J. Ewers and
Orthopaedic Biomechanics Laboratories, Michigan State University, East Lansing, MI 48824
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Roger C. Haut
Roger C. Haut
Orthopaedic Biomechanics Laboratories, Michigan State University, East Lansing, MI 48824
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Patrick J. Atkinson
Department of Mechanical Engineering, Kettering University, Flint, MI 48504
Benjamin J. Ewers and
Orthopaedic Biomechanics Laboratories, Michigan State University, East Lansing, MI 48824
Roger C. Haut
Orthopaedic Biomechanics Laboratories, Michigan State University, East Lansing, MI 48824
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received by the Bioengineering Division March 7, 2000; revised manuscript received December 5, 2000. Associate Editor: L. J. Soslowsky.
J Biomech Eng. Jun 2001, 123(3): 293-295 (3 pages)
Published Online: December 5, 2000
Article history
Received:
March 7, 2000
Revised:
December 5, 2000
Citation
Atkinson, P. J., Ewers and , B. J., and Haut, R. C. (December 5, 2000). "Blunt Injuries to the Patellofemoral Joint Resulting From Transarticular Loading Are Influenced by Impactor Energy and Mass." ASME. J Biomech Eng. June 2001; 123(3): 293–295. https://doi.org/10.1115/1.1378576
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