Quantitative gait evaluation of hip diseases using principal component analysis.

The measurement of five gait parameters, namely, joint angular displacement of lower extremities, floor reaction forces, trajectory for a point of force application, temporal factor and distance factor has been performed with ease and high speed using mini-computer on-line real-time processing. Gait data of 211 patients with hip diseases was normalized, quantified and summarized by the principal component analysis. A 'gait evaluation plane' was formed according to the results obtained by the principal component analysis. The gait evaluation using the plane was compared with clinical conditions of patients, and it was evident that this system can evaluate the recovery of the gait by treatment.

[1]  S B Sepic,et al.  Walking patterns of men with unilateral surgical hip fusion. , 1975, The Journal of bone and joint surgery. American volume.

[2]  P. Cavanagh,et al.  A technique for averaging center of pressure paths from a force platform. , 1978, Journal of biomechanics.

[3]  A. B. Drought,et al.  WALKING PATTERNS OF NORMAL MEN. , 1964, The Journal of bone and joint surgery. American volume.

[4]  M. Kendall.  A course in multivariate analysis , 1958 .

[5]  M. P. Murray,et al.  Walking patterns of patients with unilateral hip pain due to osteo-arthritis and avascular necrosis. , 1971, The Journal of bone and joint surgery. American volume.

[6]  L Klenerman,et al.  Gait analysis in the assessment of functional performance before and after total hip replacement. , 1981, Journal of biomedical engineering.

[7]  S B Sepic,et al.  A comparison of the funtional performance of patients with Charnley and Müller total hip replacement. A two-year follow-up of eighty-nine cases. , 1979, Acta orthopaedica Scandinavica.

[8]  D. Mclachlan.  The Role of Optics in Applying Correlation Functions to Pattern Recognition , 1962 .

[9]  U Stanic,et al.  Standardization of kinematic gait measurements and automatic pathological gait pattern diagnostics. , 1977, Scandinavian journal of rehabilitation medicine.

[10]  Antonio Pedotti,et al.  Simple Equipment Used in Clinical Practice for Evaluation of Locomotion , 1977, IEEE Transactions on Biomedical Engineering.

[11]  W. Harris,et al.  Traumatic arthritis of the hip after dislocation and acetabular fractures: treatment by mold arthroplasty. An end-result study using a new method of result evaluation. , 1969, The Journal of bone and joint surgery. American volume.

[12]  E. Chao,et al.  An electrogoniometric study of knee motion in normal gait. , 1970, The Journal of bone and joint surgery. American volume.