• Title, Summary, Keyword: Foot orthotic

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Effects of Foot orthotic on Postrual sway (발보조기가 자세동요에 미치는 효과)

  • Song, Chang-Ho;Lee, Seung-Won
    • The Journal of Korean Physical Therapy
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    • v.16 no.2
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    • pp.99-107
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    • 2004
  • The purpose of this study was to investigate the effect of foot orthotic on postural sway. Subjects were 15 patients(7 men and 8 women) who prescribed foot orthotic at B hospital and L rehabilitation medicine clinic in Seoul. Postural sway during a single limb stance was measured using the CMS 10 Measuring System when subjects positioned on the balance trainer under two treatment conditions(orthotic and nonorthotic). RCSP(resting calcaneal stance position) while subjects were standing on the glass plate was measured using the angle finder after subjects were positioned in prone to divide equally lower leg and calcaneus using the goniometer. The result was as follows. There were significant difference between postural sway of orthotic and nonorthotic conditions(t=4.888, 4.589, p<0.001), and the leg of the small RCSP within a subject has the small postural sway index($x^2=26.000$, p<0.001). In conclusion, foot orthotics provide structural support for detecting and controlling postural sway in patients prescribed foot orthotics.

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The Application of Foot Orthotic to Chronic Pain Patient with Pelvic Obliquity : 4 Cases Report (골반 경사가 동반된 만성 통증 환자에게 족부 보조기를 적용한 증례 4례)

  • Ahn, Hee-Bin;Kim, Soon-Joong;Jeong, Su-Hyeon
    • Journal of Korean Medicine Rehabilitation
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    • v.21 no.2
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    • pp.309-318
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    • 2011
  • Objectives : To evaluate the effect of foot orthotic in patient with chronic pain and pelvic obliquity in standing. Methods : Four cases of functional spinal scoliosis, were investigated for the changes in the calcaneal stance position angle, pelvic height, pelvic angle, Cobb's angle and walking pattern. Standing full spine X-ray for measuring the pelvic height, pelvic angle, Cobb's angle were checked before and after application of foot orthosis. The foot orthosis was composed of polyprophylen and chamude cover. Results : 1. There was no change in resting calcaneal stance position. 2. Difference of pelvic height and pelvic angle was reduced after application of a foot orthosis. 3. Cobb's angle in 2 cases was reduced after application of a foot orthosis. 4. Walking balance was improved. 5. Visual analogue scale was decreased. Conclusions : The study showed that foot orthosis seemed to be effective for chronic pain, spinal curve, pelvic obliquity and walking balance.

User Needs of Women with Pes Planus in Their 50s and 60s for Compression Pants Development (50~60대 평발 여성의 컴프레션 팬츠 개발을 위한 착용자 필요 조사)

  • Lee, Sojung;Kim, Dong-Eun
    • Journal of the Korean Society of Clothing and Textiles
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    • v.41 no.3
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    • pp.420-432
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    • 2017
  • This study examined user needs for compression pant development for women with pes planus in their 50s and 60s. A total of 355 women aged 50 to 69 participated in the survey and interview. Questions were asked if they had pes planus, the using condition of foot orthotic, inconveniences during gait, and wearing condition of compression pants. The results showed that 42 (11.8%) women had pes planus. Orthotic insole and arch support were used most frequently. The most uncomfortable aspect of foot orthotic (n=146) was that it was difficult to use unless they were going outside. Participants with pes planus responded that they felt discomfort on the inner area of propodium, metatarsus, ankle, and knee during gait. The purchase and wearing rate of compression pants were not high; however, compression pants were purchased with specific needs and purposes. Respondents mainly wore the compression pants for sports activities. M size was the most frequently worn size. They preferred high waist type leggings and there was a need to increase the compression strength of the waist, thigh, knee and ankle. Additionally, the ease of donning and doffing were discussed.

The Effects of Femorotibial Angle of Contact laterally Wedged Insoles With Strapping of varying elevations (밀착형 외측 쐐기 스트랩 깔창의 높이에 따라 대퇴경골각에 미치는 영향)

  • Lee, Sang-Yong;Park, Sung-Jin
    • The Journal of Korean of Orthopedic Manual Physical Therapy
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    • v.12 no.1
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    • pp.44-50
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    • 2006
  • The purpose of this study is to assess the radiographic effects of normal person with contact laterally wedged insoles with strapping of varying elevations. Eight person who were randomized into group according to their birth dates and wedge elevation, participants wore contact laterally wedged insoles with strapping with elevation of 9, 15, 21mm. Standing radiographs were used to analyze the femorotibial angle for each subject, The result of repeated measures ANOVA's reveled that laterally wedged insoles with strapping of varying elevations produced significantly the femorotibial angle. The degree of change in femorotibial angle with the insole with strapping was effected by the tilt of the lateral wedge(P<0.05). We suggest that these results may be beneficial for manufacturing foot orthotic devices, such as wedged insoles, to control medial and later compartment forces in the knee varus-valgus deformity.

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Development of the Active Ankle Foot Orthosis to Induce the Normal Gait for the Paralysis Patients (마비 환자의 정상적 보행을 위한 능동형 단하지 보조기 개발)

  • Hwang, Sung-Jae;Kim, Jung-Yoon;Hwang, Seon-Hong;Park, Sun-Woo;Yi, Jin-Bock;Kim, Young-Ho
    • Journal of the Ergonomics Society of Korea
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    • v.26 no.2
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    • pp.131-136
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    • 2007
  • In this study, we developed an active ankle-foot orthosis(AAFO) which can control dorsi/ plantar flexion of the ankle joint to prevent foot drop and toe drag during walking. 3D gait analyses were performed on five healthy subjects under three different gait conditions: the normal gait without AFO, the SAFO gait with the conventional plastic AFO, and the AAFO gait with the developed AFO. As a result, the developed AAFO preeminently induced the normal gait compared to the SAFO. Additionally, AAFO prevented foot drop by proper plantarflexion during loading response and provided enough plantarflexion moment as a driving force to walk forward by sufficient push-off during pre-swing. AAFO also could prevent toe drag by proper dorsiflexion during swing phase. These results indicate that the developed AAFO may have more clinical benefits to treat foot drop and toe drag, compared to conventional AFOs, and also may be useful in patients with other orthotic devices.

Effects of Removable Ankle-Foot Orthosis in Chronic Patients With Hemiplegia During Gait Training: A Pilot Study

  • Kim, Hyung-geun;Oh, Yong-seop
    • Physical Therapy Korea
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    • v.22 no.3
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    • pp.91-97
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    • 2015
  • This study was conducted to investigate the effects of the removable ankle-foot orthosis (RAFO) which was developed to improve the gait of stroke patients. The subjects of this study were five stroke patients who agreed to participate in this study by signing a written consent form. To verify gait improvement after wearing the orthosis, a Timed Up and Go test and Functional Gait Assessment were performed, and spatiotemporal gait variables such as gait speed, cadence, stride length, double limb support, and the efficient gait test of body sway angle were performed. For every variable, the differences prior to and after wearing the RAFO were compared using the Wilcoxon signed-rank test. Every gait variable improved significantly after wearing the RAFO compared to prior to wearing it. The pilot study will enhance future efforts to evaluate orthotic function objectively during gait in stroke patients.

The Effect of Rear Foot Wedge Angle on Peak Plantar Pressures on the Forefoot During Walking (Rear Foot Wedge 각도가 보행시 전족저 최대압력에 미치는 영향)

  • Kwon, Oh-Yun;Jung, Do-Young;Park, Kyoung-Hee
    • Physical Therapy Korea
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    • v.9 no.3
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    • pp.11-21
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    • 2002
  • The purpose of this study was to find the effect of rear foot wedge angle on peak plantar pressures on the forefoot during walking. Twenty normal healthy subjects (10 female, 10 male) were recruited. Peak plantar pressure was measured using pressure distribution platforms (MatScan system) in medial forefoot (under the first, second metatarsal head) and lateral forefoot (under the third, fourth, fifth metatarsal head). The subjects walked at the comfortable velocity under seven conditions; bare footed, $5^{\circ}$, $10^{\circ}$ and $15^{\circ}$ wedges under the medial and lateral sides of the hindfoot. The three averaged peak plantar pressures were collected at each condition at stance and toe off phases. The results showed that a significant increase in lateral forefoot plantar peak pressure investigated in the medial wedge and a significant decrease in lateral forefoot plantar peak pressure investigated in lateral wedge at stance phase (p<.05). These results suggest that rear foot wedge may be useful to modify the peak plantar pressure on the forefoot.

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The Relationship between Foot Arch Structure and March Fractures - Comparative study between 15(30feet) normal person and the 15(30feet) patients with march fracture - (행군골절 발생과 발아치 구조의 연관성에 대한 연구보고)

  • Bae, Young-Jae;Yoon, Sung-Il
    • Journal of Korean Foot and Ankle Society
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    • v.2 no.2
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    • pp.71-75
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    • 1998
  • The fact that, under similar training activities performed in the same environment, march fractures develop in only a certain percentage of the trainees indicates that intrinsic factors are affecting the prevalence of these fractures. Among these intrinsic factors, the relation between foot arch type and the occurance of march fractures was investigated in this study. From 1997 to 1998, at one infantry medical company of infantry corps in Korea, 15 march fracture patients were detected among infantry soldiers. Quantitative measures of the foot arch (longitudinal) structure of 15(30feet) march fracture patients were established and compared with those of 15(30feet) normal person. The results were as follows. 1. From the lateral X-ray film, three parameters (i.e. calcaneal angle, forefoot angle, height to length ratio)were defined to describe the structure of the longitudinal arch of the foot. 2. The mean value of the calcaneal angle of march fracture group and normal control group showed 16.4 degree, 20.5 degree respectively. The difference between two groups was statistically significant (P>0.006), but those of forefoot angle and height to length ratio were not. 3. In the calcaneal angle twenty-six feet(87%) of march fracture group were lower than 17 degrees but twenty-five feet(83%) of normal control group were more than 17 degrees. That is, march fracture were more prevalent in feet with low calcaneal angle. 4. In the low arch foot, the orthotic device might relieve the energy load carried by the foot, thus reducing the incidence of march fractures, and should be analyzed in further study.

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Development of the Automatic Knee Joint Control System for a Knee-Ankle-Foot Orthosis Using an Electromechanical Clutch (전자-기계식 클러치를 이용한 장하지 보조기용 무릎관절 자동 제어 장치의 개발)

  • 이기원;강성재;김영호;조강희
    • Journal of Biomedical Engineering Research
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    • v.22 no.4
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    • pp.359-368
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    • 2001
  • A new knee-ankle-foot-orthosis(KAFO) which uses an automatically-controlled electromechanical wrap spring clutch for the knee joint was developed in the present study. It was found that the output voltage from the foot switches of the developed KAFO was proportionally increased with respect to the applied load. The output voltage from the infrared sensor also decreased as the knee flexion angle increased. The knee joint system for the new KAFO weighs only 780g lighter than any other commercially available developed system. In addition, the solenoid reduces the reaction time for the automatic control of the knee joint. The static torque of the clutch was measured for three persons, and it satisfied the normal knee extension moment during the pre-swing. Three-dimensional gait analyses for three different gait patterns (normal gait, locked-knee gait, controlled-knee gait) from five normal subjects were conducted. Controlled-knee gait showed the maximum knee flexion angle of 40.56$\pm9.55^{\circ}$ and the maximum knee flexion moment of 0.20$\pm$0.07Nm/kg at similar periods in the normal gait. Our KAFO system satisfies both stability during stance phase and free knee flexion during the swing phase at the proper period during the gait cycle. Therefore, our KAFO system would be very useful in various low extremity orthotic applications.

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The Effects of Femorotibial Angle of a Contact Lateral-Wedged Insole with Strapping in Patients with Varus Deformity Osteoarthritis of the Knee (밀착성 외측 쐐기 스트랩 깔창이 내반슬 골관절염 환자의 대퇴경골각에 미치는 영향)

  • Lee, Sang-Yong
    • The Journal of Korean of Orthopedic Manual Physical Therapy
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    • v.12 no.2
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    • pp.1-10
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    • 2006
  • The purpose are to assess the efficacy of a contact lateral-wedged insole with strapping on the femorotibial angle in patients with varus deformity osteoarthritis of the knee after treatment period. 25 outpatients with knee osteoarthritis (OA) were randomized to be treated with a contact lateral-wedge insole with strapping. Standing radiographs were used to analyze the femorotibial angle for each subject. The result of repeated two-way ANOVA's reveled that a contact lateral-wedged insole with strapping produced significantly differences in the femorotibial angle between groups after treatment period (P<0.05). and repeated one-way ANOVA's reveled that it produced significantly differences in the femorotibial angle between experimental groups after treatment period (P<0.05). We suggest that these results may be beneficial for manufacturing foot orthotic devices, such as wedged insoles, to control medial and later compartment forces in the knee varus-valgus deformity.

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