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MR Vol.13 No.3 indexに戻る
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MODERN RHEUMATOLOGY
Vol.13 No.3 |
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Dynamic effect of an elastically strapped
lateral wedged insole on the subtalar joint in convenient foot
print analysis using facsimile paper |
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| Yoshitaka Toda1 , Akiko Kato1 and Noriko Tsukimura1 |
| (1) Kishoukai Toda Orthopedic Rheumatology Clinic,
14-1 Toyotsu-cho, Suita, 564-0051, Japan |
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| Received: 15 July 2002 Accepted: 25 October 2002 |
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| Abstract |
| We previously reported that insoles with subtalar
strapping lead to valgus realignment of the femorotibial angle during
the static phase in patients with osteoarthritis of the knee (knee
OA) with varus deformity. In a follow-up study, we assessed the effect
of an insole with subtalar strapping during the dynamic phase of
the gait. Twenty-eight female patients with unilateral medial compartment
knee OA and thirty-eight age- and sex-matched control subjects were
enrolled. Gait analysis was performed for each subject while barefoot,
with the insole with subtalar strapping, and with the insole with
talonavicular strapping. In the knee OA group, the average foot angle
while barefoot (12.4 ± 2.3°) was significantly higher than that in
the control group (10.6 ± 3.4°) (P = 0.018). In the knee OA group,
the angle while barefoot was significantly reduced after wearing
the insole with subtalar strapping (9.4 ± 2.3°) (P 0.0001), but not
with use of the insole with talonavicular strapping (11.1 ± 2.8°)
(P = 0.12). There was no significant difference in the foot angle
among the three conditions in the control group (P 0.05). This result
suggests that the insole with subtalar strapping contributes to an
adaptive mechanism which reduces the adductive moment at the knee
through decreasing both the femorotibial angle and the external rotation
of the foot position during walking. |
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| Key words |
| Foot print - Gait analysis - Knee - Orthotic
devices - Osteoarthritis (OA) |
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