Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10431245 | Journal of Biomechanics | 2015 | 30 Pages |
Abstract
Currently, there exists a need for a more thorough understanding of native hip joint kinematics to improve the understanding of pathological conditions, injury mechanisms, and surgical interventions. A biomechanical testing system able to accomplish multiple degree-of-freedom (DOF) movements is required to study the complex articulation of the hip joint. Therefore, the purpose of this study was to assess the repeatability and comparative accuracy of a 6 DOF robotic system as a testing platform for range of motion in vitro hip biomechanical analysis. Intact human cadaveric pelvises, complete with full femurs, were prepared, and a coordinate measuring machine collected measurements of pertinent femoral and pelvic bony landmarks used to define the anatomic hip axes. Passive flexion/extension path and simulated clinical exam kinematics were recorded using a 6 DOF robotic system. The results of this study demonstrate that the 6 DOF robotic system was able to identify hip passive paths in a highly repeatable manner (median RMS error of <0.1 mm and <0.4°), and the robotically simulated clinical exams were consistent and repeatable (rotational RMS error â¤0.8°) in determining hip ranges of motion. Thus, a 6 DOF robotic system is a valuable and effective tool for range of motion in vitro hip biomechanical analysis.
Keywords
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Physical Sciences and Engineering
Engineering
Biomedical Engineering
Authors
Mary T. Goldsmith, Matthew T. Rasmussen, Travis Lee Turnbull, Christiano A.C. Trindade, Robert F. LaPrade, Marc J. Philippon, Coen A. Wijdicks,