• 대한인간공학회지
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• 제30권2호
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• pp.291-296
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• 2011

This study was designed to investigate the effects of an ankle foot orthosis(AFO) with variable ankle joint angles on balance performance in healthy adults. Eighteen healthy adults were recruited in this repeated measures design with subjects as their own controls. An AFO with four kinds of ankle joint angles(-5, 0, 5, and 10 degree) were used and balance performance was measured during single limb standing. Three trials were obtained and then averaged for data analysis. Foot pressure was measured using an F-scan system and muscle activity was measured using an MP150 system. There were significant differences in balance performance with ankle joint angles. An AFO with -5 degrees was associated with significant increases in postural sway(anterior-posterior), and in muscle activity for the medial gastrocnemius and tibialis anterior compared with other degrees of angle. Findings of this study show that angles of an AFO are related to balance performance and a joint angle of 10 degree is effective for promoting joint stability and postural control. This information can be used by clinicians to prescribe AFOs.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1992년도 춘계학술대회
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• pp.203-208
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• 1992

In order to restore the gait function by functional electrical stimulation(FES) in hemiplegic patients, an electrical stimulator and foot sensor were developed on the basis of optimal parameters which resulted from animal experiments. Physical properties of the soleus muscle were quite different from those of themedial gastrocnemius muscle, that is, the former had a characteristic or slow muscle and the letter had a characteristic of fast muscle in rats. Optimal parameters for electrical stimulation were 0.2ms of pulse width and 20Hz of frequency in the soleus muscle and 0.3ms, 40Hz in the medial gastrocnemius muscle. Amplitude modulated electrical stimulator with -15V of maximal output was made and automatic on-off time if the stimulator was 5 seconds. The foot sensor composed of 3 sensors in 3 pressure points of the foot was made in order to control the gai t function by closed loop feedback system. The gait function was improved by using the stimulator and foot sensor in peroneal palsy. These results suggest that the electrical stimulator with closed loop feedback system may restore the gait function in hemiplegic patients.

• 대한족부족관절학회지
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• 제4권2호
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• pp.93-99
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• 2000

Eleven patients with calcaneal fracture had 2 acute compartment syndrome of the feet and 9 late complication of the compartment syndrome of the feet. An interstitial pressure of more than 30 mmHg in either the central or interosseous compartment was considered pathologic and was treated by fasciotomy performed medially. Rigid claw toe deformity was treated by excision of the head and neck of the proximal phalanx, dorsal capsular release of the metatarsophalangeal joint, and lengthening of the extensor tendon. Patients were evaluated at a mean of 35 months(range, 21 - 44 months) after operation, and the examination was directed specifically toward symptoms and signs of myoneural ischemia, and walking pain. At follow-up, 2 patients with acute compartment syndrome of the foot had no evidence of myoneural ischemia, 9 patients with claw toe deformity had no pain with walking. Based on our clinical observations, we concluded that compartment syndrome of the foot may occur after the calcaneal fracture and fasciotomy is effective treatment for the prevention of the long term sequelae of this debilitating condition.

• 대한족부족관절학회지
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• 제8권1호
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• pp.26-30
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• 2004

감염된 당뇨병성 족부궤양의 병실내 벽매립형 중앙 흡인 장치를 이용한 창상 밀봉관리로 빠른 창상의 호전을 얻을 수 있었다. 이 창상관리 방법은 빠른 창상의 호전 외에도 비용을 획기적으로 줄일 수 있으며 환자의 동통을 줄이고 병실내 세균 전파의 위험이 적으며 필요 인력 축소 등의 장점이 있으나 말기신장부전 환자에서의 적용은 추가의 연구가 필요할 것으로 사료된다.

• 동의신경정신과학회지
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• 제14권1호
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• pp.107-116
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• 2003

The effects of Semen Ziziphi Spinosae extract were tested for the anti-stress action. 100g of crude drug of Semen Ziziphi Spinosae was extracted with pure water and the total extractive was evaporated under reduced pressure to give 10.7g. ICR male mice($20{\pm}2g$) were fed orally with the dose of 100mg/kg/day for five days. Foot shock was given to make experimental environment of physiological stress. Foot shock mice were placed individually in the foot shock compartments and sociopsychological mice were placed nonfoot shock compartment-the side of foot shock compartments. Mice were exposed to sociopsychological stress by restraining and seeing foot shock stressed mice for one hour for five days. Semen Ziziphi Spinosae extract administered group showed a significant decrease of serum corticosterone secretion compared with control group. Noradrenaline secretions in the dorsal cortex of brain were increased but not significant. Lipid peroxidation of the liver of mice were tested by measuring malondialdehyde, and Semen Ziziphi Spinosae extract had tendency of decreasing lipid peroxidation but not significant. But Semen Ziziphi Spinosae extract administration had the effect of decreasing serum level of aspartate aminotransferase and malondialdehyde. These results suggest that Semen Ziziphi Spinosae extract can effectively rid the sociopsychological stress and stress concerned diseases.

• 대한족부족관절학회지
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• 제3권1호
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• pp.12-18
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• 1999

Eleven patients with calcaneal fracture had 2 acute compartment syndrome of the feet and 9 late complication of the compartment syndrome of the feet. An interstitial pressure of more than 30 mmHg in either the central or interosseous compartment was considered pathologic and was treated by fasciotomy performed medially. Rigid claw toe deformity was treated by excision of the head and neck of the proximal phalanx, dorsal capsular release of the metatarsophalangeal joint, and lengthening of the extensor tendon. Patients were evaluated at a mean of 35 months(range, 21 - 44 months) after operation, and the examination was directed specifically toward symptoms and signs of myoneural ischemia, and walking pain. At follow -up, 2 patients with acute compartment syndrome of the foot had no evidence of myoneural ischemla, 9 patients with claw toe deformity had no pain with walking. Based on our clinical observations, we concluded that compartment syndrome of the foot may occur after the calcaneal fracture and fasciotomy is effective treatment for the prevention of the long term sequelae of this debilitating condition.

• 대한족부족관절학회지
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• 제10권2호
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• pp.250-254
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• 2006

Purpose: The treatment of diabetic foot ulcers with total contact cast has been reported to be associated with numerous undesirable complications. This study shows that our technique of total contact casting that incorporates high concentration silver coated foam dressing. Materials and Methods: Forty-four diabetic foot ulcers were treated with total contact cast along with high concentration silver coated foam dressing. Complication and healing rates were evaluated. Results: Eighty five percent of the ulcers healed within 6 weeks with an overall complication rate of 7%. There were only two cases (5%) of infection and no recurrent ulceration and no another site new pressure ulcer in our study. Conclusion: Total contact casting incorporates high concentration silver coated foam dressing resulted in fewer complications rate and healing rate that is comparable to other studies.

• 대한중풍순환신경학회지
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• 제14권1호
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• pp.40-48
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• 2013

■ Objectives This study was designed to investigate the effects of an ankle foot orthosis(AFO) on gait of two hemiparetic stroke patients with foot drop. ■ Methods Gait of two hemiparetic stroke patients were analyzed during walking on the treadmill without or with AFO application. The spatiotemporal and center of pressure(CoP) intersection parameters of gait analysis were measured using a treadmill gait analysis system. ■ Results The AFO had positive effects on hemiparetic gait parameters; increasing cadence, increasing step length, decreasing step time, stride time, and lateral symmetry. ■ Conclusion Hemiparetic gait was improved by ankle foot orthosis.

• 대한물리치료과학회지
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• 제22권2호
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• pp.43-47
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• 2015

Background : Many factors affect foot and ankle biomechanics during walking, including gait speed and anthropometric characteristics. This study examined the effect of walking speed on peak plantar pressure during the walking. Method : Thirty two normal healthy subjects (16 men, 16 women) were recruited. Peak plantar pressure was investigated using pressure distribution platforms (Pedoscan system) under the hallux heads of the first, second, and third metatarsal bones, and heel. Result : The results also suggest that slow walking speeds may decrease forefoot peak plantar pressure in patients with peripheral neuropathy who have a high risk of skin breakdown under the forefoot(p<0.05). Conclusion : The results also suggest that slow walking speeds may decrease forefoot peak plantar pressure in patients with restricted low extremity range of motion who have a high risk of skin breakdown under the forefoot.

• 비파괴검사학회지
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• 제25권4호
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• pp.247-253
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• 2005

본 연구에서는 여러 굽 높이의 신발을 신고 보행하는 동안 발/발목 복합체의 roll-over 모양을 분석하였다. 본 연구를 위해서 근골격계 및 발 질환이 없는 15명의 건강한 성인 여성들을 대상으로 보행분석을 수행하였고, 실험에는 굽 높이가 다른 4종의 신발을 사용하였다. 보행분석 시 roll-over의 특성을 구하기 위해 초기접지기부터 반대발 초기접지기까지의 발목 및 무릎의 반사마커 궤적과 지면반발력의 압력중심 데이터를 이용하였다. 연구결과로 굽 높이가 증가할수록 roll-over의 모양은 원위방향으로 이동하고 그 특성은 굽 높이에 상관없이 일정한 형태로 관찰되었다. 또한, 6cm이하의 신발에서는 roll-over의 곡률중심이 수직방향으로 이동함으로써 일정한 roll-over 특성을 유지하도록 발/발목 복합체에서 자동으로 적응함을 알 수 있었다. 그러나 그 이상의 굽 높이의 신발에서는 발목관절만으로 충분한 균형을 보장할 수 없으므로 무릎 및 엉덩관절의 보상작용이 동시에 일어남을 알 수 있었다. Roll-over 특성에 대한 본 연구결과는 인간 보행의 보다 간단하고 넓은 이해를 제공할 것이고, 나아가 의지 또는 보조기와 같은 재활기기의 보다 넓은 이해를 제공할 수 있을 것으로 기대된다.