| Summary: | 碩士 === 國立成功大學 === 醫學工程學系 === 81 === The purpose of this study was to evaluate the influence of two
currently available rehabilitative knee braces on knee motion
and to evaluate their ability of protection against the
postoperative tissue. By the theory of Euler angle and finite
helical axis and the use of 3-D motion analysis system,we could
measure all six degrees of freedom (DOF) of knee motion during
level walking. The experimental group consisted of seven left
ACL-deficient patients. Six of them had received ligament
reconstruction and the other one had received partial
meniscectomy only because of partial tear of the ACL. Six
normal subjects comprised the control group and all of them
were free of any pathological change on the back or lower limbs
that might have an effect of their gait. Four test conditions
were investigated:(1) injured limb, (2) control limb, (3)
injured limb with ROM splint, (4)injured limb with 4-Point
brace. There were no apparent differences in the graphical
patterns and amplitude values for any of the six DOF of knee
movement between the two unbraced conditions. Among the three
rotational angles,the change in knee flexion/extension was the
largest and that in knee abduction/adduction was the smallest
one. Among the three translational components,the change in the
anterior/posterior translation was the largest and that in the
medial/lateral translation was the smallest. We could note that
the graphical patterns of five of the parameters(DOF)all had
swing phase peaks that appeared time related to flexion/
extension. Both brace applications were shown to significantly
reduce the values of all six parameters of knee motion ,which
seemed to be more marked when ROM splint was used,but no
noticeable changes could be found in the graphical patterns
,walking velocity and percentage of left or right stance phase
in the gait cycle.
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