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Objective assessment of dyskinesin in children with cerebral palsy
Abstract
I Gait
cmd. E.3. d Sunmy. W.J. (1983) A pint condinak systm far clinical dewiption of the dimmsiond mocianr: applkalkm lo lbe kec. 1. Binme&. Enpng IM, ,364. Hotnsicer, SM. Kddc ME. (1993) *sssment ofgait poems us@ mud ne.3mk.c J. Biomechmics 26643.3 I Kadaba, M.P.. Run*ridnre, H.K.. Woata ME. (1990) Mc~u-t of lower extremity kiiamticr
& Posture
6 (1997)
263-280
269
whose phase plot approximated normal in shape and orrentation con*islen,ly had a coccstrictd asee (~425% h&w normal) under the cwve 4/4, whereas only 3/10 that favored PC2 showed a constricted ama. Most d the chttnges in PC1 and PC2 occuned at the transition of the stance to the
AND METHODSi
MATERIALS
h,g Tukcy’s studentn
0.05 level.
PRINCIPAL GAIT
HZ. Dan&h’, A.
Dept. of Clinical and Alberta
COMPONENT KINEMATIC
ANALYSIS MEASURES
ADDS
TO
M. Hulligcr, C.D. Melt. I. O’Callaghan, Wojciacbowski. M. McNeil’
Neworiences, Univ. of Calgary, Alberta, Canada T2N 4NI children’s Hospital‘, Catgary, Alberta, Canada T2T X7
Gait is determined by svnerzies of simultaneous movetttents at different One way to addmss~su~h <iple joint kinematics at each phase of the gait cycle. is 10 “se prhlciple ccanpmmt analysis (1). This statistical technique may add new dimensions to kinematic analysis.
~oinls.
We studied 20 children with spastic diplegia using the Elite recording system to determine joint angle changes during repeated gait cycles. We then derived 3 principle c otqmxnts and mmpa’ed them to the normal child. We derived 8 phase plot of the 2nd principle compxw?.nt against the fust. and described the shape and orientation of the phase plot. as well as the approximate area under the curve, compared to normal.
4 children were usine a wetker to assist ambulation and 16 were not. Overall 8 children had a chart stride length (SL) (less than 0.6 meters), 5 medmm SL (0.61 0.8 meters) and 7 a long SL (0.81 - 1.2). All the children using a walker (N=4) had a cadence below 5Ojmin. 5 of the unassisted children showed a cadence of SldO/min. and the rest (N=l 1) varied between 61 100hitt. decrease
The PC2iPCI phase plot results showed an increase in PC1 magnitude for the majority of the group
in PC2 and il small (N=14/20). Those
I Gait
cmd. E.3. d Sunmy. W.J. (1983) A pint condinak systm far clinical dewiption of the dimmsiond mocianr: applkalkm lo lbe kec. 1. Binme&. Enpng IM, ,364. Hotnsicer, SM. Kddc ME. (1993) *sssment ofgait poems us@ mud ne.3mk.c J. Biomechmics 26643.3 I Kadaba, M.P.. Run*ridnre, H.K.. Woata ME. (1990) Mc~u-t of lower extremity kiiamticr
& Posture
6 (1997)
263-280
269
whose phase plot approximated normal in shape and orrentation con*islen,ly had a coccstrictd asee (~425% h&w normal) under the cwve 4/4, whereas only 3/10 that favored PC2 showed a constricted ama. Most d the chttnges in PC1 and PC2 occuned at the transition of the stance to the
AND METHODSi
MATERIALS
h,g Tukcy’s studentn
0.05 level.
PRINCIPAL GAIT
HZ. Dan&h’, A.
Dept. of Clinical and Alberta
COMPONENT KINEMATIC
ANALYSIS MEASURES
ADDS
TO
M. Hulligcr, C.D. Melt. I. O’Callaghan, Wojciacbowski. M. McNeil’
Neworiences, Univ. of Calgary, Alberta, Canada T2N 4NI children’s Hospital‘, Catgary, Alberta, Canada T2T X7
Gait is determined by svnerzies of simultaneous movetttents at different One way to addmss~su~h <iple joint kinematics at each phase of the gait cycle. is 10 “se prhlciple ccanpmmt analysis (1). This statistical technique may add new dimensions to kinematic analysis.
~oinls.
We studied 20 children with spastic diplegia using the Elite recording system to determine joint angle changes during repeated gait cycles. We then derived 3 principle c otqmxnts and mmpa’ed them to the normal child. We derived 8 phase plot of the 2nd principle compxw?.nt against the fust. and described the shape and orientation of the phase plot. as well as the approximate area under the curve, compared to normal.
4 children were usine a wetker to assist ambulation and 16 were not. Overall 8 children had a chart stride length (SL) (less than 0.6 meters), 5 medmm SL (0.61 0.8 meters) and 7 a long SL (0.81 - 1.2). All the children using a walker (N=4) had a cadence below 5Ojmin. 5 of the unassisted children showed a cadence of SldO/min. and the rest (N=l 1) varied between 61 100hitt. decrease
The PC2iPCI phase plot results showed an increase in PC1 magnitude for the majority of the group
in PC2 and il small (N=14/20). Those