1st Joint ESMAC-GCMAS Meeting - Análise de Marcha

differences were found in anthropometrics, or in resting VO2 Rate or resting HR.
Table 1- Demographics of Amputees and Normal Child/Teen
Symes
n=17
BKA
n=10
150%
125%
100%
75%
50%
25%
0%
KD
n=9
- 131 -
AKA
n=4
Age (yr)
11.1
(+2.7)
11.2
(+4.1)
14.3
(+3.6)
15.5
(+2.6)
BM (kg)
49.6
(+19.6)
45.6
(+23.4)
56.8
(+10.4)
66.4
(+22.1)
BMI
(kg/m 2 *21.1 19.3 21.0 21.1
) (+5.6) (+4.9) (+2.6) (+4.2)
* statistically different from age matched normals
HD
n=3
12.3
(+5.5)
40.9
(+16.4)
18.9
(+0.9)
Normal
CHILD
n=23
10.0
(+1.6)
35.6
(+7.5)
16.8
(+2.1)
% of Age Matched Normal
Normal
TEEN
n=16
15.4
(+1.8)
66.0
(+21.0)
22.6
(+6.5)
An analysis of VO2 Cost, walking velocity and HR was conducted comparing between
amputee groups, and normal. Data is presented in Figure 1 as a percent of age matched
normal. Amputee group comparisons show that AKA and HD have higher VO2 Cost than
Symes, and HD have significantly higher HR than the Symes and KD groups during SSW.
The Symes, BKA, KD and
AKA groups were not
statistically different than
normal for VO2 Cost, SSW
velocity or HR. The HD
group had significantly
higher VO2 Cost and HR
while the SSW velocity was
significantly slower, than
normal. An overall trend
can be seen in Figure 1 for
increasing VO2 Cost and
decreasing SSW velocity,
with amputation level.
% Walk Cost % Walk Velocity % Walk HR
Symes BKA KD AKA HD
Discussion
The Waters series of adult amputees show that energy expenditure increases and walking speed
decreases with the level of amputation for traumatic, surgical and vascular amputees. Although
this study shows a trend for increased VO2 Cost with increased level of amputation, the data
shows that paediatric amputees maintain a slightly slower walking speed, but do not show a
significant increase in energy cost or in HR until amputation occurs at the hip.
References
[1] Waters RL and Mulroy S, 1999, Gait and Posture, vol. 9, 207-231.
[2] Herbert LM et al., 1994, Physical Therapy, vol. 74, no. 10, 943-950.
[3] Ashley RK et al., 1992, Orthopaedic Review, vol. 21, no. 6, 745-749.