• Title/Summary/Keyword: Foot Angle

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Effect of Taping Technique Applied to Adults with Knee Instability on Landing Error Scoring System, Lower Extremity Joint Angle

  • Son, Jin-Kyu;Park, Sam-Ho;Lee, Myung-Mo
    • Physical Therapy Rehabilitation Science
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    • v.10 no.4
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    • pp.406-413
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    • 2021
  • Objective: The purpose of this study was to investigate effects of taping technique applied to knee instability. Design: Cross sectional study. Methods: Twenty-six participants with knee instabilityparticipated in this study. They were randomly assigned to the Kinesio taping (KT) group (n=13) and the dynamic taping (DT) group (n=13). Both groups applied knee stabilization taping techniques. In order to compare the effects of each taping technique, the change in the landing error scoring system (LESS) and lower extremity joint angle wasrecorded before and after the intervention. Results: Both groups significantly decreased in the change before and after the LESS (p<0.05). At the joint angle of the lower extremities, KT group significantly reduced the valgus angle at the max knee flexion (p<0.05). In DT group knee joint flexion and hip joint flexion angles were significantly increased at foot contact (p<0.05). In max knee flexion, the knee joint flexion angle was significantly increased (p<0.05). In foot contact, max knee flexion, the knee joint valgus angle was significantly increased (p<0.05). DT group showed more significant changes in knee joint flexion angle at foot contact and hip joint flexion angle at max knee flexion. Conclusions: Dynamic taping is a clinically applicable intervention method for lowering the risk of non-contact injury in participants with knee instability and for knee stability during rehabilitation exercises.

Effect of Independent Suspension Function of Hiking Boots on the Stability and Load of Foot (등산화 아웃솔의 독립적 서스펜션 기능이 발의 안정성 및 부하에 미치는 효과)

  • Lee, Ki-Kwang;Choi, Chi-Sun;Eun, Seon-Deok
    • Journal of the Ergonomics Society of Korea
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    • v.25 no.4
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    • pp.115-119
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    • 2006
  • To investigate the effects of independent suspension technology(IST) of hiking boot on the stability and load of foot, eight participants performed medial and lateral drop landing from 33.4cm height and 85cm distance to uneven surface while wearing normal & IST hiking boots. For the stability of foot during the drop landing, the balance angle & suspension angle and rearfoot angle was analyzed using high-speed video analysis. Also kinetic analysis using the force plate and insole pressure measurement was conducted to analyze vertical & breaking ground reaction force and pressure distribution. Not only the balance angle & suspension angle but also rearfoot angle was improved with IST boots for lateral drop landing. These results indicate the IST boots may have the suspension function which keeps the foot to be stable during landing. However the IST boots did not show any effect for medial landing. This might be related to the hardness of medial part of outsole. Therefore the softer outsole of medial part could be recommended. Furthermore the impact force & breaking force and insole pressure were reduced with IST boot. These results means that IST boot has not only cushioning effect but also good grip effect. Therefore the hiking boots applied the independent suspension function may help to reduce fatigue and prevent injury such as ankle sprain in hiking on uneven surface.

Kinematic Skill Analysis of the Turn Motion and Release Phase in Female Hammer Throw (여자해머던지기 턴 동작과 투사국면에 대한 운동학적 기술 요인 분석)

  • Chung, Nam-Ju;Kim, Jae-Pil;Song, Ok-Heung
    • Korean Journal of Applied Biomechanics
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    • v.20 no.4
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    • pp.429-436
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    • 2010
  • The purpose of this study was to analyze the kinematic factors and throwing variables for the 3-turn and 4-turn techniques and for release as well as to provide technical advice for improving athletic performance in hammer throwing. Data analysis led to the following conclusions: To increase the rotation speed for the 3-turn and 4-turn techniques, the time elapsed during the 1-foot support period should be decreased the distance between the rotating foot and the rotation axis should be small and the height of the hip joint should be increased at the times of release The throwing angle at the moment of release should be more than 40 degrees, and the throwing position should be taken vertically high at the shoulder joints. To accelerate the motion of the hammer, the speed should not be reduced during the 1-foot support period but should be increased during the 2-foot support period for much greater acceleration. In the 3-turn technique, the angles of the shoulder axis and hummer string should be dragged angle at the maximum point and lead angle at the minimum point, and dragged angle at the maximum and minimum points in the 4-turn at the time of relase The upper body should be quickly bent backward, the knee angle should be extended, and the angles of the shoulder axis and hammer string should be dragged angle close to 90 degrees.

The Effect of Medial Arch Support for Flexible Flat Foot of Children (소아의 유연성 편평족에서 내측 세로궁 지지대의 효과)

  • Song, Hae-Ryong;Kim, Hak-Jun;Yoon, Yong-Cheol
    • Journal of Korean Foot and Ankle Society
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    • v.14 no.2
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    • pp.177-181
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    • 2010
  • Purpose: The author evaluated the clinical and radiological results after wearing the medial arch supports in children. Materials and Methods: 103 patients who had symptomatic flat feet were evaluated from march, 2002 to may 2009. All patients wore the medial arch supports according to the symptoms. We measured parameters at weight-bearing radiographs before and after medial arch support were worn. We also evaluated the clinical scores using the AOFAS score. Results: Mean age of patients was 97 months (11-204 months), all foot of patients involved bilaterally. Mean talo-first metatarsal angle of right foot was $17.7{\pm}9.4$ and left foot was $19.96{\pm}9.5$ degrees at AP radiograph in pre-wearing state. Mean calcaneal pitch angle of right foot was $12.0{\pm}5.3$ and left foot was $11.9{\pm}5.8$ degrees at lateral radiograph in pre-wearing state. Mean talo-first metatarsal angle of right foot was $14.4{\pm}8.05$ and left foot was $13.1{\pm}8.77$ degrees at AP radiograph in post-wearing state. Mean calcaneal pitch angle of right foot was $16.4{\pm}5.75$ left foot was $16.5{\pm}5.6$ degrees at lateral radiograph in post-wearing state. The radiographic angles between pre-wearing and post-wearing state were statistically significant (p<0.05). Mean pre-wearing AOFAS hindfoot score was $66.7{\pm}9.25$, midfoot score was $60.0{\pm}9.34$ forefoot score was $57.1{\pm}11.8$. Mean post-wearing AOFAS hindfoot score was $73.2{\pm}9.73$, midfoot score was $68.1{\pm}10.1$, forefoot score was $67.2{\pm}11.4$. The forefoot score was highest improving scores among the AOFAS scores. Conclusion: From our study, we concluded that medial arch support was effective for symptomatic flat feet of children in radiological and clinical results from our study.

The Study of Gait Parameter and Plantar Foot Pressure during Walking in Adults with Down Syndrome (다운증후군 성인의 보행 특성과 족저압에 관한 연구)

  • Koo, Hyun-Mo
    • Journal of the Korean Society of Physical Medicine
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    • v.7 no.1
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    • pp.21-28
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    • 2012
  • Purpose : The purpose of this study was to examine the gait parameter and plantar foot pressure of adults with Down syndrome(DS) during walking in order to provide data for developing evidence-based deficit or common rehabilitation strategies. Method : 15 participants with DS(12 men, 3 women; age $26.06{\pm}4.47$) and 15 healthy subjects(12 men, 3 women; age $25.33{\pm}3.43$) were matched age. They walked at self selected speeds on a GAITRite system and RS-scan system, and had the following measurements done: cadence, stride length, step width, foot angle, percent stance, percent double support, and plantar foot pressure in 10 areas of the foot. Results : In comparison of gait parameter(cadence, stride length, step width, foot angle, percent stance, and percent double support) between adults with DS and healthy subjects, there was significant differences(p<.05). Regarding plantar foot pressure during gait with or without DS, there were statisically significant differences in the area of Toes 1-5, Metatasal 1-4, Midfoot, and Heel(Medial and lateral)(p<.05). Conclusion : Our data show that DS walk with a less physiolosical gait pattern and plantar foot pressure than healthy subjects. Based on our results, DS patients need targeted rehabilitation and exercise strategies.

Effects of Korean Medical Treatments Combined with Foot Orthotics on Patients' Center of Gravity with Flat Foot : a retrospective study (후향적 연구를 통한 맞춤형 족부보조기와 한방치료를 병행한 편평족 환자의 인체중심선 변화에 대한 연구)

  • Sung, Jin-Wook;Yu, Sun-Ae;Cho, Sung-Woo
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.12 no.1
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    • pp.97-107
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    • 2017
  • Objectives : The purpose of this study is to find out the effect of Korean Medical treatments combined with Orthotics on patients's center of gravity with flat foot. Methods : We reviewed the medical records of 24 patients diagnosed with flat foot. They had received Korean medical treatments combined with Foot Orthotics. To estimate the efficacy in rebalancing of body, we analyzed the changes in center of gravity. Results : Among the 24 patients, 13 were male and 11 were female. There was no statistically significant change in frontal angle at the time of treatment. But side angle was changed statistically significant(P=0.009). There was no difference according to sex of male and female. Conclusion : In this study, We found that Korean Medical treatments with Foot Orthotics was effective for correction of patients's center of gravity with flat foot.

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The Effect of Intervention on Hallux Valgus Patient's Foot Pressure (중재방법에 따른 엄지발가락 가쪽휨증 환자의 발바닥 압력분포에 미치는 영향)

  • Kim, Hosung;Kim, Myungchul;Lee, Minsoo
    • Journal of The Korean Society of Integrative Medicine
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    • v.3 no.2
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    • pp.63-72
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    • 2015
  • Purpose: The purpose of this study was to investigate the foot pressure of subjects with hallux valgus following conservative management. Methods: The subjects (20 females) were divided into 2 groups; Hallux valgus group (10) and Control group (10) who could evaluate questionnaire & weight bearing X-ray. All the participants were evaluated distribution of foot pressure by Zebris FDM-S system with conservative management (taping therapy and hallux valgus device) during single-limb stance. Results: The Hallux valgus group (HVG) was significantly different than Control group (CG) in hallux valgus angle(p<0.05). The Hallux valgus group with Foot Device (HVG-FD), Hallux valgus group with Taping (HVG-Tp) and Hallux valgus group with Foot device and Taping (HVG-FD&Tp) was not significantly different than CG in hallux valgus angle (p<0.05). The HVG was not significantly different than CG in forefoot (p1, p2, p3), significantly different than CG in rearfoot (p7) about foot pressure during single-limb stance (p<0.05). The HVG-FO and HVG-FO and TP was significantly different than HVG in forefoot (p1, p2, p3), on significantly different than HVG in rearfoot (p7) about foot pressure during single-limb stance (p<0.05). There was significantly correlation HVG-FO and HVG-FO & TP in forefoot (p1, p2, p3) was negative correlation (p<0.05) and in rearfoot (p7) was positive correlation (p<0.05). Conclusion: This study showed that hallux valgus were effected hallux valgus angle and foot pressure by various treatment methods during single-limb stance. Further study is needed to measure various age and work with hallux valgus for clinical application.

Sport biomechanical comparative analyses between general sporting shoe and functional walking shoe (보행용 전문 신발과 일반 운동화의 운동역학적 비교 분석)

  • Choi, Kyoo-Jeong;Kwon, Hee-Ja
    • Korean Journal of Applied Biomechanics
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    • v.13 no.2
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    • pp.161-173
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    • 2003
  • This study was performed to investigate the kinematic and kinetic differences between functional walking shoe(FWS) and general sports shoe(GSS). The subjects for this study were 4 male adults who had the walking pattern of rearfoot strike with normal feet. The movement of one lower leg was measured using force platform and 3 video cameras while the subjects walked at the velocity of 2/1.5 m/s. The findings of this study were as follows 1. The angle of lower leg-ground and angle of knee with FWS was greater than with GSS at the moment of strike the floor and the moment of second peak ground reaction force. The decreasing rate of angle of ankle was smaller in FWS from the strike phase to the second peak ground reaction force. These mean upright walking and round walking along the shoe surface. 2. The maximal Increased angle of Achilles tendon and the minimal decreased angle of rearfoot were smaller in FWS very significantly(p<0.001). Thus FWS prevent the excessive pronation of ankle and have good of rear-foot control. 3. The vortical ground reaction force and the rate of it to the BW were smaller in FWS statistically(p<0.001). The loading rate was smaller in FWS, too, and thess represent the reduction of load on ankle joint and prevention of injuries on it.

The Effect of Foot Strengthening Exercise to Young of Hallux Valgus with Flexible Flatfoot (발 강화 운동이 유연성 편평발이 동반된 엄지발가락가쪽휨증을 가진 젊은 성인에게 미치는 효과)

  • Park, Jin-Hyun;Kim, Jin-Seop;Kim, Kyoung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.11
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    • pp.5211-5217
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    • 2012
  • This study was to evaluate the effects of foot strengthening exercise to improve hallux valgus in young of hallux valgus with flexible flatfoot. Subjects 28 people were randomly divided by the foot strength group(n=14) and control group(n=14). In a period of 8 weeks, they put on I.D.W. Experimental group took foot strengthening exercise for 20 minutes 3 times a week during 8 weeks. Foot structure and max pressure were evaluated by hallux angle, 1~2 metatarsal angle, navicular height, 1st phalange, 2~5phalange, 1st metatarsal, 2nd metatarsal, 3rd metatarsal, 4th metatarsal, 5th metatarsal, mid foot, medial hind foot, lateral hind foot. There were significantly increased by exercise group in outcomes of the structural and plantar foot pressure from hallux angle, 1~2 metatarsal angle, 1st phalange, 1st metatarsal, 2nd metatarsal, 3rd metatarsal, mid foot. The result suggest that foot strengthening exercise is feasible and suitable for individuals with hallux valgus with flexible flatfoot.