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analysistools:conventionalgaitmodels

Conventional Gait Model

Introduction

The conventional gait model has many variations. The defacto standard is its implementation from Vicon and called Vicon Plug In Gait model (PiG).

This includes the following angles:

ANGLES POSITIVE ROTATION AXIS DIRECTION ANGLES POSITIVE ROTATION AXIS DIRECTION
LPelvisAngles 1 Anterior Tilt Prg.Fm. Y Anti-clockwise RPelvisAngles 1 Anterior Tilt Prg.Fm. Y Anti-clockwise
LPelvisAngles 2 Upward Obliquity Prg.Fm. X’ Anti-clockwise 2 Upward Obliquity Prg.Fm. X’ Clockwise
LPelvisAngles 3 Internal Rotation Prg.Fm. Z’’ Clockwise 3 Internal Rotation Prg.Fm. Z’’ Anti-clockwise
LFootProgressAngles 1 - Prg.Fm. Y - RFootProgressAngles 1 - Prg.Fm. Y -
LFootProgressAngles 2 - Prg.Fm. X’ - RFootProgressAngles 2 - Prg.Fm. X’ -
LFootProgressAngles 3 Internal Rotation Prg.Fm. Z’’ Clockwise RFootProgressAngles 3 Internal Rotation Prg.Fm. Z’’ Anti-clockwise
LHipAngles 1 Flexion Pelvis Y Clockwise RHipAngles 1 Flexion Pelvis Y Clockwise
LHipAngles 2 Adduction Pelvis X’ Clockwise RHipAngles 2 Adduction Pelvis X’ Anti-clockwise
LHipAngles 3 Internal Rotation Pelvis Z’’ Clockwise RHipAngles 3 Internal Rotation Pelvis Z’’ Anti-clockwise
LKneeAngles 1 Flexion Thigh Y Anti-clockwise RKneeAngles 1 Flexion Thigh Y Anti-clockwise
LKneeAngles 2 Varus/Adduction Thigh X’ Clockwise RKneeAngles 2 Varus/Adduction Thigh X’ Anti-clockwise
LKneeAngles 3 Internal Rotation Thigh Z’’ Clockwise RKneeAngles 3 Internal Rotation Thigh Z’’ Anti-clockwise
LAnkleAngles 1 Dorsiflexion Tibia Y Clockwise RAnkleAngles 1 Dorsiflexion Tibia Y Clockwise
LAnkleAngles 2 Inversion/ Adduction Tibia X’’ Clockwise RAnkleAngles 2 Inversion/ Adduction Tibia X’’ Anti-clockwise
LAnkleAngles 3 Internal Rotation Tibia Z’ Clockwise RAnkleAngles 3 Internal Rotation Tibia Z’ Anti-clockwise

References

These references have information on kinematic and kinectic calculations, as well as anthropometrics and repeatability of the model. The Vicon upper body model has not been validated in any peer reviewed journal papers and therefore there are no articles on repeatability of the upper body model.

A comparison of the accuracy of several hip center location prediction methods.
Bell AL, Pedersen DR, Brand RA
J Biomech23p617-21(1990)

Davis, R., Ounpuu, S., Tyburski, D. & Gage, J. (1991). A gait analysis data collection and reduction technique. Human Movement Sciences, 10, 575-587.

Kadaba, M.P., Ramakrishnan, H.K. & Wooten, M.E. (1987). J.L. Stein, ed. Lower extremity joint moments and ground reaction torque in adult gait. Biomechanics of Normal and Prosthetic Gait. BED Vol (4)/DSC Vol 7. American Society of Mechanical Engineers. 87-92.

Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait.
Kadaba MP, Ramakrishnan HK, Wootten ME, Gainey J, Gorton G, Cochran GV
J Orthop Res7p849-60(1989)

Measurement of lower extremity kinematics during level walking.
Kadaba MP, Ramakrishnan HK, Wootten ME
J Orthop Res8p383-92(1990 May)

Macleod, A. And Morris, J.R.W. (1987). Investigation of inherent experimental noise in kinematic experiments using superficial markers. Biomechanics X-B, Human Kinetics Publishers, Inc., Chicago, 1035-1039.

On the estimation of joint kinematics during gait.
Ramakrishnan HK, Kadaba MP
J Biomech24p969-77(1991)

Ramakrishnan, H.K., Masiello G. & kadaba M.P. (1991). On the estimation of the three dimensional joint moments in gait. 1991 Biomechanics Symposium, ASME 1991, 120, 333-339.

Sutherland, D.H. (1984). Gait Disorders in Childhood and Adolescence. Williams and Wilkins, Baltimore.

analysistools/conventionalgaitmodels.txt · Zuletzt geändert: 2017/03/30 15:00 von oliver