Roentgen single-plane photogrammetric analysis (RSPA.) A new approach to the study of musculoskeletal movement.

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Roentgen single-plane photogrammetric analysis (RSPA.) A new approach to the study of musculoskeletal movement. / Yuan, X; Ryd, Leif; Tanner, K E; Lidgren, Lars.

In: Journal of Bone and Joint Surgery: British Volume, Vol. 84, No. 6, 2002, p. 908-914.

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TY - JOUR

T1 - Roentgen single-plane photogrammetric analysis (RSPA.) A new approach to the study of musculoskeletal movement.

AU - Yuan, X

AU - Ryd, Leif

AU - Tanner, K E

AU - Lidgren, Lars

PY - 2002

Y1 - 2002

N2 - We present a new approach for the accurate reconstruction of three-dimensional skeletal positions using roentgen single-plane photogrammetric analysis (RSPA). This technique uses a minimum of three markers embedded in each segment which allow continuous, real-time, internal skeletal movement to be measured from single-plane images, provided that the precise distance between the markers is known. A simulation study indicated that the error propagation in this approach is influenced by focus position, object position, the number of control points, the accuracy of the previous measurement of the distance between markers and the accuracy of image measurement. For reconstruction of normal movement of the knee with an input measurement error of SD = 0.02 mm, the rotational and translational differences between reconstructed and original movement were less than 0.27 degrees and 0.9 mm, respectively. Our results showed that the accuracy of RSPA is sufficient for the analysis of most movement of joints. This approach can be applied in combination with force measurements for dynamic studies of the musculoskeletal system.

AB - We present a new approach for the accurate reconstruction of three-dimensional skeletal positions using roentgen single-plane photogrammetric analysis (RSPA). This technique uses a minimum of three markers embedded in each segment which allow continuous, real-time, internal skeletal movement to be measured from single-plane images, provided that the precise distance between the markers is known. A simulation study indicated that the error propagation in this approach is influenced by focus position, object position, the number of control points, the accuracy of the previous measurement of the distance between markers and the accuracy of image measurement. For reconstruction of normal movement of the knee with an input measurement error of SD = 0.02 mm, the rotational and translational differences between reconstructed and original movement were less than 0.27 degrees and 0.9 mm, respectively. Our results showed that the accuracy of RSPA is sufficient for the analysis of most movement of joints. This approach can be applied in combination with force measurements for dynamic studies of the musculoskeletal system.

KW - Photogrammetry: methods

KW - Computer-Assisted: methods

KW - Support

KW - Movement: physiology

KW - Biological

KW - Knee Joint: physiology

KW - Non-U.S. Gov't

KW - Models

KW - Human

KW - Image Processing

KW - Computer Simulation

U2 - 10.1302/0301-620X.84B6.11146

DO - 10.1302/0301-620X.84B6.11146

M3 - Article

VL - 84

SP - 908

EP - 914

JO - The Bone & Joint Journal

T2 - The Bone & Joint Journal

JF - The Bone & Joint Journal

SN - 2049-4408

IS - 6

ER -