• 대한기계학회논문집A
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• 제36권8호
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• pp.913-920
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• 2012

단층촬영 영상정보를 이용하여 근육, 연부조직 및 골 구조 등을 포함한 발의 상세한 유한요소해석모델을 개발하여 보행과정을 모사하였고, 발과 직접 접촉하는 신발밑창 형상의 고려 여부에 따른 보행 중의 발바닥 압력의 변화를 비선형 접촉해석으로 계산하였다. 해석결과 직립 정지상태나 보행 중에는 공통으로 뒤꿈치가 지면에 닿을 때 압력집중이 가장 높았으며, 편평한 밑창보다 발바닥 곡면과 같은 밑창을 사용한 보행해석에서 뒤꿈치의 압력집중이 덜하고 접촉면이 더 넓었다. 이러한 보행모델 및 해석은 발바닥의 압력집중에 취약한 당뇨병 환자 전용 의료보조신발(압력을 넓게 분포시켜 집중의 강도를 낮출 수 있는) 개발의 수단으로 활용될 수 있음을 보였다.

• 한국운동역학회지
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• 제14권3호
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• pp.99-118
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• 2004

The aim of this study is to evaluate tennis shoes's plantar pressure distribution in tennis prayers and to determine the influence of the shoe on various tennis movements. When investigating the biomechanics of movement in tennis, one of the first things to do is to understand the movement patterns of the sport, specifically how these patterns relate to different tennis shoes. Once these patterns are understood, footwear company can design tennis shoes that match the individual needs of tennis players. Plantar pressure measurement is widely employed to study foot function, the mechanical pathogenesis for foot disease and as a diagnostic and outcome measurement tool for many performance. Measurements were taken of plantar pressure distribution across the foot and using F-Scan(Tekscan Inc.) systems respectively. The F-Scan system for dynamic in-shoe foot pressure measurements has enabled us to assess quantitatively the efficacy of different types of footwear in reducing foot pressures. The Tekscan F-Scan system consists of a flexible, 0.18mm thick sole-shape having 1260 pressure sensors, the sensor insole was trimmed to fit the subjects' right, left shoes. For this study 4 university male, high level tennis players were instructed to hit alternated forehand stroke, backhand stroke, forehand volley, backhand volley, smash, service movement in 4 different tennis shoes. 1. When impact in tennis movement, peak pressure distribution of landing foot displayed D>C>B>A, A displayed the best low pressure distribution. A style's tennis shoes will suggest prayer with high impact. If prayer with high impact feeling during pray in tennis wear A style, it will decrease injury, will have performance improvement. 2. When impact in tennis movement, plantar pattern of pressure distribution in landing foot displayed B>A>C>D in stability performance. During tennis, prayer want to stability movement suggest B style tennis shoes when tennis movement impact keep stability of human body. B style tennis shoes give performance improvement 3. When impact in tennis movement, plantar pattern of center of force(C.O.F.)trajectory in landing foot analyzed this : 1) When stroke movement and volley movement in tennis, prayer better to rearfoot movement. 2) when service movement, prayer midfoot strike movement. 3) when smash movement, prayer have forefoot strike movement.

• Journal of Acupuncture Research
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• 제30권5호
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• pp.227-233
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• 2013

Objectives : The purpose of this study was to report the clinical effects of catgut-embedding acupuncture therapy on plantar fasciitis. Methods : Two patients were treated mainly with catgut-embedding acupuncture therapy and partly with other Korean medicine modalities. Catgut-embedding acupuncture therapy was applied once a week for three weeks, and follow-up observation was conducted by telephone survey two months after the first treatment. Results : In these two cases, the pain numerical rating scale(NRS) gradually decreased from 8 to 1, and the pain relief as well as the improvement in ambulatory function was maintained at two-month follow-up. Conclusions : Catgut-embedding acupuncture therapy could be effective for pain-reduction and functional improvement in plantar fasciitis.

• 대한족부족관절학회지
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• 제24권3호
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• pp.120-123
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• 2020

Heterotopic ossification is the formation of extra-skeletal bone in the muscle and soft tissues, and an osteoma is a benign bone-forming tumor composed of compact or mature trabecular bone limited almost exclusively to the craniofacial bones. This paper reports an extremely rare case of heterotopic ossification mimicking an osteoma that occurred independently at the plantar side of the medial sesamoid bone. The patient was a 46-year-old male with a three-month history of pain and a hard mass on the plantar aspect of the left forefoot sole. After excising the lesion, the patient's symptoms were relieved, and no pain or complications occurred. This paper discusses this exceedingly rare case of heterotopic ossification around the medial sesamoid bone with a review of the relevant literature.

• 한국운동역학회지
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• 제17권3호
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• pp.173-180
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• 2007

The purpose of study was to compare plantar pressure during walking wearing the curved rear balance and normal shoes. Twelve university students(height: $177.2{\pm}4.6cm$, weight: $68.4{\pm}5.8kg$, age: $26.2{\pm}1.6yrs.$) who have no known musculoskeletal disorders were recruited as the subjects. Plantar foot pressures were evaluated using the Tekscan's pressure measurement systems while subjects walked upright position wearing the curved rear balance and normal shoes in random order at a speed of 1.3 m/s. The contacting dimension, the mean plantar pressure, and the peak plantar pressure were determined for each trial. For each dependent variable, paired t-test was performed to test if significant difference existed between shoe conditions (p<.05). As a result, the curved rear balanced shoes showed as large as 38 up to 50 % of area at the rear side of feet than the normal shoes when measuring the contact area with upright position. In the distribution of average pressure, the curved rear balanced shoes displayed fairly low pressure compared to other normal shoes in general except for one area, which is M2, and especially, the measured pressures at the both rear (M1) and middle (M5) side of feet were low and statically significant. The contact area of the curved rear balanced shoes when walking was significantly larger at the rear (M1) and fore (M6, M7) side of feet. When considering pressure distribution at walking, low pressure was detected at the rear side of feet with the curved rear balanced shoes and at the fore side of feet for other normal shoes. The results showed that the contacting dimension of the curved rear balance shoes that acts between shoes and feet was higher than the corresponding value for the normal shoes in general; therefore it would reduce the pressure to the feet by allowing the each sole of the foot on the ground evenly.

• Annals of Rehabilitation Medicine
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• 제39권6호
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• pp.897-904
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• 2015

Objective To investigate differences in plantar pressure distribution between a normal gait and unpredictable slip events to predict the initiation of the slipping process. Methods Eleven male participants were enrolled. Subjects walked onto a wooden tile, and two layers of oily vinyl sheet were placed on the expected spot of the 4th step to induce a slip. An insole pressure-measuring system was used to monitor plantar pressure distribution. This system measured plantar pressure in four regions (the toes, metatarsal head, arch, and heel) for three events: the step during normal gait; the recovered step, when the subject recovered from a slip; and the uncorrected, harmful slipped step. Four variables were analyzed: peak pressure (PP), contact time (CT), the pressure-time integral (PTI), and the instant of peak pressure (IPP). Results The plantar pressure pattern in the heel was unique, as compared with other parts of the sole. In the heel, PP, CT, and PTI values were high in slipped and recovered steps compared with normal steps. The IPP differed markedly among the three steps. The IPPs in the heel for the three events were, in descending order (from latest to earliest), slipped, recovered, and normal steps, whereas in the other regions the order was normal, recovered, and slipped steps. Finally, the metatarsal head-to-heel IPP ratios for the normal, recovered, and slipped steps were $6.1{\pm}2.9$, $3.1{\pm}3.0$, and $2.2{\pm}2.5$, respectively. Conclusion A distinctive plantar pressure pattern in the heel might be useful for early detection of a slip event to prevent slip-related injuries.

• 한국산학기술학회논문지
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• 제13권3호
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• pp.1153-1160
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• 2012

본 연구는 뇌졸중 환자의 보행수행을 저하시키는 발목 등쪽 굽힘근의 약화에 대해 발목 근력 강화 훈련과 정적 근육 신장 훈련을 이용하여 등쪽 굽힘을 시행한 훈련이 뇌졸중 환자의 족저압 및 보행에 미치는 영향을 알아보고자 하였다. 연구는 편마비 뇌졸중 환자 36명을 대상으로 뇌졸중 환자의 보행변수인 10m 걷기를 측정하고, 발바닥의 각 영역별 최대 족저압의 측정은 F-scan system을 사용하여 자료를 수집하여 연구하였다. 본 연구에서 각 훈련 전과 훈련 후의 보행의 변화 연구에서 발목 근력 강화 훈련군과 정적 근육 신장 훈련군은 10m 보행속도검사에서 보행속도가 감소하여 뇌졸중 환자의 보행에 좋은 영향을 미친다고 할 수 있겠다. 뇌졸중 환자 발의 압력측정에서 발목 근력 강화 훈련군 에서는 다른 그룹에 비해서 무지부, 족지부, 제1중족골두에서 최대 족저압이 증가 하였다.

• 대한기계학회논문집A
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• 제31권11호
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• pp.1115-1123
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• 2007

The foot plays an important role in supporting the body and keeping body balance. An abnormal walking habit breaks the balance of the human body as well as the function of the foot. The foot orthotics which is designed to consider biomechanics effectively distributes the load of the human body on the sole of the foot. In this paper, gait analysis was performed for three male subjects wearing the orthotics. In this study, three male subjects were selected. The experimental apparatus consists of a plantar pressure analysis system and digital EMG system. The gait characteristics are simulated by ADAMS/LifeMOD. The COP (Center of Pressure), EMG and ground reaction force were investigated. As a result of gait analysis, the path of COP was improved and muscle activities were decreased with orthotics on the abnormal walking subjects.

• 한국운동역학회지
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• 제27권3호
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• pp.229-238
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• 2017

Objective: The purpose of this study was to identify the effects of taping therapy and inner arch support on pes planus lower extremity alignment and gait. Method: The study was conducted on 13 women in their 20s who had pes planus and no gait problems. Independent variables were the condition of wearing basic socks (S1) and the condition of wearing socks with taping therapy and inner arch support (S2). The dependent variables were resting calcaneal stance position (RCSP), plantar pressure distribution during gait, and underlying and medial longitudinal arch angle measured using radiography. Statistical analysis was performed using the Wilcoxon test with SPSS 23.0 for comparison of S1 and S2. Results: In the RCSP measurement, the angle range of S2 changed to normal. Meary's angle appeared to be less than the angle of S1, indicating alleviation of the degree of pes planus. The calcaneal pitch angle increased at S2 from that at S1. The plantar pressure distribution was divided into four areas (toe, forefoot, midfoot, and hindfoot). At S2, the maximum pressure increased in the toe and midfoot. The maximum force increased significantly in the toe and midfoot but decreased significantly in the forefoot and hindfoot. In addition, the contact area increased overall especially at the midfoot and hindfoot. Contact time decreased in the toe and forefoot, but increased in the midfoot and hindfoot. Conclusion: Taping therapy and inner arch support showed structural improvement of the pes planus. In addition, the force and pressure applied to the foot during walking are distributed evenly in the area of the sole, thus positively affecting walking.

• 한국동물학회지
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• 제32권2호
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• pp.84-92
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• 1989

한국인 정상 남자 112명, 여자 118명 총 230명의 460족척에 나타난 피문을 분석하여 다음과 같은 결과를 얻었다. 1) 족척의 중간부의 융선 방향은 횡행, 경도의 비골측 근위경사, 경도의 비골측 근위경사, 뚜렷한 비골측 원위경사의 순으로 나타났으며 중간부의 융선 배열에 대한 대칭 빈도는 63.9%로 나타났다. 2) 무지구부 문형은 원위측 제상문, 와상문, 개방문의 순으로 나타났으며 무지구에 나타난 대칭 빈도는 83.2%이였다. 3) 지간부 문형은 II 지간부에서는 개방문, 원위측 제상문, 근위측 제상문, 와상문의 순으로, III지간부에서는 개방문, 원위측 제상문, 와상문, 근위측 제상문의 순으로, IV지간부에서는 개방문, 원위측 제상문, 와상문의 순으로 나타났다. 4) 지간부 융선수는 a-b 57.76, b-c 70.74, c-d 75.09이며 남녀 사이, 또는 양족 사이에는 통계적으로 유의한 차이가 없었다 (p>0.01).