• Journal of the Korea Safety Management & Science
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• v.11 no.2
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• pp.59-67
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• 2009

The goal of this study is to propose the effective method of investigating the injurious factors and making improved plans that prevents the workers against musculoskeletal disorders at an diesel engine manufacturing company and the same business field with similar working conditions and process. A questionnaire were adopted to analyze the symptoms of workers' musculoskeletal disorders, and an ergonomic assessment method such as RULA, OWAS were performed to find out harmful factors of workplace and working posture. Based on the result of the evaluation, to enhance the working environment, improvement of worktable, working space, tools, and outfit was suggested, and induction of mechanical system was also suggested. It can be concluded that the method and process described in this paper could be helpful for diagnosing the musculoskeletal disorders and making improvement plans to the diesel engine fuel injection system manufacturing company and the same business field with similar working conditions and process.

• Physical Therapy Korea
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• v.13 no.4
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• pp.64-70
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• 2006

The purpose of this study was to determine whether a relationship existed between foot type and the location of plantar callus in healthy subjects. Twenty-five healthy subjects with plantar callus were recruited for this study. Foot deformities were classified according to the operational definitions as 1) a compensated forefoot varus, 2) an uncompensated forefoot varus or forefoot valgus, or 3) a compensated rearfoot varus. The location of plantar callus was divided into two regions. Fourteen of the 19 feet with compensated forefoot varus and six of the 9 feet showed plantar callus at the second, third or fourth metatarsal head. Five of the 6 feet with uncompensated forefoot varus and twenty of the 16 feet with forefoot valgus showed plantar callus at the first or fifth metatarsal head. A significant relationship was found between foot type and location of callus (p<.01). The results support the hypothesis that certain foot types are associated with characteristic patterns of pressure distribution and callus formation. We believe diabetic patients with insensitive feet and with the types of foot deformity should be fit with foot orthoses and footwears that accommodate their respective deformity in a position as near to the subtalar joint as possible with the goal of preventing plantar ulceration.

• Journal of Korean Foot and Ankle Society
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• v.7 no.2
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• pp.187-193
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• 2003

Purpose: To provide baseline data for prevention and education of diabetic foot in Korea. Materials and Methods: 216 diabetic patients are included in this survey. The average age is 58.64 year old with average 9.92 years of diabetes mellitus periods. Among them, 41% used insulin injection, 42% oral medication, 14% both and 3% diet were used for their blood sugar control. The diabetic foot survey was done. Results: The survey of patients symptom and disease of their feet results: 49% had sensory decrease in their feet. Associated disease in foot were callus(15%), heel pain(10%), bunion(4%), toe deformity(2%), Tinea pedis were 9%, tingle sensation were 17%, and swelling on feet were 2%, The survey of patients privious history of foot problems are: 8% had previous operation history on their feet and 17% had history of infection on their feet, 23% had bullae history, The survey of patients prevention and education are: Those who have had more than one diabetic foot education were 45.7%, and among them 24% had routine regular foot check up. Only 5% wear special diabetic shoe and 3% had custom orthotics. Conclusion: Interests to diabetic foot care is increasing in diabetic patients in Korea. However still we need more education, and efforts for prevention. Special education and diabetic shoe is still low, The survey data could be good baseline for diabetic prevention and education.

• Physical Therapy Korea
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• v.11 no.4
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• pp.31-41
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• 2004

The purpose of this study was to examine the effect of the angle of a wedged insole on knee varus torque during walking. Fifteen healthy subjects were recruited. Knee varus torque was measured using three-dimensional motion analysis (Elite). Knee varus torque was normalized to gait cycle (0%: initial contact; 100%: ipsilateral initial contact) and stance phase (0%: initial contact; 100%: ipsilateral toe off). The average peaks of knee varus torque during the stance phase of the gait cycle according to the different insole angles (10 or 15 degrees) were compared using one-way ANOVA with repeated measures. The results showed that in the early stance phase, the average peak knee varus torque increased significantly for both the medial 10 and 15 degree wedged insole conditions and decreased significantly for both the lateral 10 and 15 degree wedged insole conditions as compared with no insole (p<.05). However, there were no significant differences between the 10 and 15 degree wedged insole conditions with either the medial or lateral wedged insole (p>.05). In the late stance phase, the average peak knee varus torque increased significantly for the medial 10 and 15 degree wedged insole conditions (p<.05), but not for the lateral 10 and 15 degree wedged insole conditions as compared with no insole (p>.05). We suggest that these results may be beneficial for manufacturing foot orthotic devices, such as wedged insoles, to control medial and lateral compartment forces in the knee varus-valgus deformity. Further studies of the effects of wedged insole angle on knee varus torque in patients with medial-lateral knee osteoarthritis are needed.

• The Journal of Korean Physical Therapy
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• v.23 no.5
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• pp.57-63
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• 2011

Purpose: The aim of this research is to determine whether there is a significant correlation between the angle of the hallux valgus and dorsi-flexion of the 1st metatarsophalangeal joint (1st MPJ) as a physical factor that has a significant influence on healthy human walking. Methods: The subjects of this research were 65 female adults (130 feet) and the methods used included recording of real measurements and conducting a questionnaire. The acquired data is analyzed by the 'Simple Pearson Correlation Analysis' and 'Repeated Measures Analysis' methods. Results: The research result shows that the left area of -0.74706 and the right area of -0.76 have a relatively high negative correlation (p<0.00). Also, after conducting the 'Repeated Measures Analysis of Variance' of the angles of the hallux valgus and dorsi-flexion of the 1st metatarsophalangeal joint (1st MPJ), the result also shows that the left and right areas of -0.75 have a relatively high negative correlation. Conclusion: The present study was performed for the identification of a significant correlation between the angle of the hallux valgus and dorsi-flexion of the 1st MPJ. From the results of this study, we confirmed that there is a clear tendency for the average distribution rates of Hallux Valgus and Hallux Rigidus (Hallux Limitus) of women to show a higher increase in proportion to age.

• The Journal of Korea Robotics Society
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• v.19 no.2
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• pp.159-168
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• 2024

Lower limb amputees are increasing due to various reasons. It is difficult for lower limb amputees to walk without an assistive device such as a prosthetic leg. In this paper, an electronically controlled knee-type prosthetic leg with a 4-bar linkage structure for lower limb amputees was developed. The knee-type prosthetic leg has a 4-bar linkage structure and assists walking by using an integrated drive module. The torque is 90 Nm, the rotation speed is up to 120 deg, and it weight 1.9 kg, so it is lighter than a commercial prosthetic leg, so it can be used for a long time because there is less fatigue when walking. An integrated control board was developed by applying various sensors and microprocessor. The motor drive and encoder are built into the integrated drive module. The integrated control board and integrated drive module communicate using CAN. When a lower limb amputee wears a knee-type prosthetic leg and walks, it shows a shape similar to the swing phase graph of a normal people, and it is possible to walk naturally while walking.

• The Journal of Korean Physical Therapy
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• v.19 no.5
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• pp.51-63
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• 2007

Diabetic foot ulcers result from abnormal mechanical loading of the foot, such as repetitive pressure applied to the plantar aspect of the foot while walking. Diabetic peripheral neuropathy causes changes in foot structure, affecting foot function and subsequently leading to increased plantar foot pressure, which is a predictive risk factor for the development of diabetic foot ulceration. To early identify the insensitive foot makes it possible to prevent diabetic foot ulceration and to protect the foot at risk from abnormal biomechanical loading. Abnormal foot pressures can be reduced using several different approaches, including callus debridement, prescription of special footwear, foot orthosis. injection of liquid silicone, Achilles tendon lengthening, and so forth. Off-loading of the diabetic wound is a key factor to successful wound healing as it is associated with reduced inflammatory and accelerated repair processes. Pressure relief can be achieved using various off-loading modalities including accommodative dressing, walking splints, ankle-foot orthosis, total contact cast, and removable and irremovable cast walkers.

• Natural Product Sciences
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• v.20 no.4
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• pp.285-289
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• 2014

Pyrrosia lingua has been widely used as a traditional medicine for the treatment of lots of diseases including pain management. However pharmacological and phytochemical studies on its anti-nociceptive properties are extremely limited. In this work, we investigated the effects of methanol extract of Pyrrosia lingua (MPL, 250 and 500 mg/kg) on the both of central and peripheral nociceptive pain. The results from tail-immersion test and hotplate test revealed that MPL has potent anti-nociceptive effects on thermal nociception. In addition, MPL efficiently reduced the acetic acid-induced chemical nociception compared to indomethacin. We also carried out formalin test and MPL reduced formalin-induced pain response on both phases, suggesting MPL has antinociceptive activities on the central and peripheral pain. In combination test using naloxone, anti-nocicpetive activity of MPL was reduced, indicating that MPL acts as a partial opioid receptor agonist. These results suggest that MPL may be possibly used as a valuable natural product-derived painkiller.

• Journal of Korean Foot and Ankle Society
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• v.20 no.3
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• pp.93-99
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• 2016

Plantar fasciitis is the most common cause of heel pain. The diagnosis of plantar fasciitis is primarily based on the presentation of symptoms and physical examination. Patients usually complain of heel pain at the medial calcaneal tubercle when taking their first step in the morning or when walking after resting. Diagnostic imaging is rarely required for the initial diagnosis of plantar fasciitis; however, it can be used for differential diagnosis. Conservative treatments, such as stretching, rest, ice massage, oral analgesics, foot orthotics, use of night splint, and corticosteroid injection, may be effective. The majority of patients report improvement with conservative treatments, and those who show no response from conservative treatments for a duration of six months or longer can consider extracorporeal shock wave therapy or surgery.

• Journal of The Korean Society of Integrative Medicine
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• v.4 no.4
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• pp.33-39
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• 2016

Purpose : The aim of this study was to investigate the effects of plastic ankle foot orthosis on adult post-stroke hemiplegic patients walking ability and balance. Method : The searched for the case controlled clinical trials about the effects of plastic ankle foot orthosis(pAFO) for walking ability and balance using quantitative gait analysis in adult post-stroke patients. Ten trials were selected from Riss4U databases published until June 2016 in Korea. The selected trials contained a control group with pre-test and post-test design, measured walking ability and balance as a dependent variable. Result : The selected ten trials involved a total of 180 patients. The walking speed, cadence, the portion of double limb supporting, stride length on affected side were improved by plastic ankle foot orthosis. Conclusion : The plastic ankle foot orthosis has some evidence to improve the walking ability and balance in post-stroke hemiplegic patients.