Blunt Injuries to the Patellofemoral Joint Resulting From Transarticular Loading Are Influenced by Impactor Energy and Mass-Reference-Cited by-同舟云学术

Blunt Injuries to the Patellofemoral Joint Resulting From Transarticular Loading Are Influenced by Impactor Energy and Mass

Published:2000-12-05 Issue:3 Volume:123 Page:293-295
ISSN:0148-0731
Container-title:Journal of Biomechanical Engineering
language:en
Short-container-title:

Author:

Atkinson Patrick J.¹,Ewers and Benjamin J.²,Haut Roger C.²

Affiliation:

1. Department of Mechanical Engineering, Kettering University, Flint, MI 48504

2. Orthopaedic Biomechanics Laboratories, Michigan State University, East Lansing, MI 48824

Abstract

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.

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

Link

http://asmedigitalcollection.asme.org/biomechanical/article-pdf/123/3/293/5767861/293_1.pdf

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