Session Information
Session Type: Abstract Submissions (ARHP)
Background/Purpose:
Foot deformities in RA patients decrease their ADL and QOL because of pain and corns.
Custom-made insoles are often prescribed for the patients with these deformities, however, the effect of these is not enough, because of their difficulties of casting and adaptation. Previous study showed that casting by footprint has the difficulty of the reflection of the plantar pressure change by foot motion at walk.
Therefore, we developed a novel system of insoles using styrene foam beads for deformities of foot, and analyzed the gait of the RA patients with foot deformities wearing our novel insoles.
Methods:
Eight RA patients (all females, average age: 65.1±8.4 years old) with foot deformities were enrolled in this study. All patients met the classification criteria of the American College of Rheumatology 1987 or the 2010 rheumatoid arthritis classification criteria.
The novel insoles were made by styrene foam beads, deaerated by pressure, and memorize the plantar shapes (Tatsuno Cork Kogyo Co., Ltd, Tatsuno, Japan).
The novel insoles were inserted into slippers (Grizzly Michel, HAFLINGER, Goslar, Germany).
We compared their gaits with bare feet, our novel insoles or low rebound slippers (DAISO Industries Co., Ltd., Saijo, Japan) using a mat type load distribution sensor (Allow industry, Japan).
The parameters of our analysis were visual analog scale (VAS) of the general gait impression (including pain and ease to walk, best: 0mm, worst: 100mm), gait speed, step length, width of center of gravity during gait, and max load of sole pressure. Gate parameter data were converted %Bare-feet, and statistical analysis were performed using Kruskal-Wallis test.
Results:
The data of VAS during their gaits and max load of sole pressure were significantly decreased by using the our novel insoles compared with bare feet (Bare-feet 64.6±28.6, Low rebound slippers(LRS) 48.3±25.7, Our insole 18.1±12.5). The data of gait speed, step length and max load of sole pressure were significantly increased compared with bare feet (Step length: Bare 100%, LRS 109.0±0.1%, Ours 109.8±0.1%. Gait Speed: Bare 100% LRS 106.0±0.1%, Ours: 107.1±0.1% Max load: Bare 100%, LRS 55.8±0.1, Ours 51.1±0.1%). The width of center of gravity during gait was significantly decreased by using the novel insole compared with low rebound slippers (Bare100%, LRS 109.0±0.1%, Ours 95.5±0.1%).
Conclusion:
In this study, we investigated the gait analysis of RA patients with foot deformity and pain using our novel insoles. The gait parameters were improved using our insoles, and pain is decreased. In addition, from the comparison of low rebound slippers, our insole could contribute the compatibility of gait stability and reducing pain.
The limitation of this study is no investigation of the long time follow up and the durability of insoles.
Our novel insoles may be useful for the treatment of foot deformities in RA patients.
Disclosure:
Y. Sakai,
None;
A. Hashiramoto,
None;
Y. Kawasaki,
None;
T. Okano,
None;
T. Takeda,
None;
N. Yagi,
None;
Y. Hata,
None.
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ACR Meeting Abstracts - https://acrabstracts.org/abstract/the-effect-of-a-novel-system-of-insoles-using-styrene-foam-beads-on-foot-deformities-in-ra-patients/