Coda AMPLIFIER 15.0 Guia do Utilizador descarregar pdf (Página 71)

Charnwood Dynamics Ltd. Coda cx1 User Guide - Gait Analysis II - 1

CX1 USER GUIDE - COMPLETE.doc 26/04/04

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Foot Segment

This is defined by three points: the first is the AnkleCentre, as defined above within the

shank segment; the other two reference points, ‘Heel’ and ‘Toe’, are simply medially offset

from the Heel and Toe markers by half an ankle-width, w, (Patient Data again). The

principal axis of the foot is taken to be parallel to the line between Heel and Toe markers;

this is the local x axis.

Thus:

= U

Toe

- M

heel

)

= GS

, M

Ankle

- M

heel

)

= U

, u

)

Centre

= ½ (P

latAnkle

+ P

medAnkle

) (as above)

heel

= M

heel

+ ½

Toe

= M

Toe

+ ½ wu

latknee

= M

knee

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Coda AMPLIFIER 15.0 Guia do Utilizador Página 71