• 한국농공학회지
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• 제31권4호
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• pp.58-71
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• 1989

This study aims to develop a computerized program for analysis of the ground-supported cylindrical shell structure with step varied section and to find out its mechanical characteri- stics through application of the developed program to the analysis of a ensiled farm silo as a model structure. The thickness of wall and bottom-plate of farm silo is assumed to be step-varied and its detailed structural dimensions are presented in Tab. 1 and 2. Several numerical case studies show that sectional stresses of the sample structures are largely reduced by adopting "varied section" design technique. And, other major results ob- tained from this study are summarize4 as follows ; 1. The variation of wall-thickness has a great influence on bending stresses of wall. Ho- wever, the larger the relative thickness of bottom-plate is, the smaller the influence is. 2. The magnitude of thickness of projecting toe of bottom-plate has negligible effect on sectional stresses 3. The conventional design methodology, which assumes the bottom edge of wall as clam- ped on ground, is proved to be discarded through the numerical analysis. 4. It is found that the "varied section" design technique should get similar effects as in the case of thick bott6m-plate having uniform thickness. 5. The variation of wall-thickness has a considerable effect on the bending stresses of bo- ttom-plate. Especially, this phenomenon is very remarkable in its projecting toe. In some cases. the negative bending moment may be acted on.

• 한국운동역학회지
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• 제14권2호
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• pp.105-119
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• 2004

To enhance our understanding of the loads on the foot during treadmill running, we have used a pressure-sensitive insole system to determine pressure, rate of loading and impulse distributions on the plantar surface during treadmill running, both in minimally cushioned footwear and in cushioned shoes. This report includes pressure, rate of loading, impulse and contact time data from a study of ten subjects running on a treadmill at 4.0m/s. Among heel-toe runners, the highest peak pressures and highest rates of loading were observed under the centre of the heel and in the medial forefoot. The arch regions were only lightly loaded. Contact time was greater in the forefoot than in the heel. Two-thirds of the impulse recorded during the step was the result of forces applied through the forefoot, mostly in the region of the metatarsal heads. The distribution of loads in the shoe suggests that the load distributing properties of the cushioning system are most important in the centre of the heel, under the metatarsal heads and great toe. Shock attenuation is primarily required under the centre of the heel and to lesser extent under the metatarsal heads. Some energy dissipation may be desirable in the heel region because it causes shock to be absorbed with less force. All the 'propulsive' effort is applied through the forefoot. Therefore, this region should as resilient as possible.

• 대한통합의학회지
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• 제5권2호
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• pp.43-50
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• 2017

Purpose : There is no validated method for measuring the toe flexor strength that can isolate the intrinsic muscles of the foot from the extrinsic muscles. This study compared the hallux flexion force (HFF) and muscle activity in the foot and ankle according to ankle position [plantarflexion (PF), neutral, and dorsiflexion (DF)]. Method : The study enrolled 17 subjects. In the sitting position, the HFF and activities of the abductor hallucis (AbdH), tibialis anterior (TA), and gastrocnemius (GCM) muscles were measured using a digital dynamometer and a wireless electromyography system, respectively. Subjects were instructed to flex the great toe maximally in three different ankle positions. Three 5-second trials were performed to measure the HFF and muscle activities in each condition. Repeated-measures ANOVA was used to compare the variables and paired t-tests with the Bonferroni correction were used for post-hoc pair-wise comparisons. The significance level was set at .016. Result : The HFF in DF was significantly greater than in any other ankle position (p<.01). The TA activity was greatest in ankle DF and that of the GCM was greatest in PF (both p<.01). However, there was no significant difference in AbdH activity according to ankle position. Conclusion : These results suggest that selective strength measurement of the foot intrinsic muscles in HFF should be performed with the ankle in the neutral position.

• 혜화의학회지
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• 제10권1호
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• pp.287-295
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• 2001

Tae-Geuk-Guan'(太極拳) Tae-Geuk(太極) is arranged Yum-Yang-O-Hang(陰陽五行) and created from Mu-geuk(無極). Mu-geuk(無極) means great chaos. Jin-sik Tae-Geuk-Guan(陳式太極拳) has tenth essential theory. There are Li(理), Qi(氣), Samjul(三節), Sacho(四稍), Ojang(五臟), Samhap(三合), Yukjin(六進), Sinbup(身法), Bobup(步法), Gangyou(剛柔). Li(理) is Rules of all things. Qi(氣) is body. Body is divided into Samjul(三節), Sacho(四稍). Ojang(五臟) is inside body and make human'body and Qi(氣). Samhap(三合) is union of mind & intention, Qi & power, muscle & bone. Yukjin(六進) is movement of body. Sinbup(身法) has Chong(縱), Hoeng(橫), Ko(高), Jeo(低), Jin(進), Toe(退), Ban(反), Chuk(側). Bobup(步法) has Jin(進), Toe(退), Ban(反), Chuk(側). Yang-sik Tae-Geuk-Guan(揚式太極拳) has tenth essential theo. There are Songyo, Heolungjungkyung(虛靈頂勁), Hamhungbalbae(含胸拔背), Chimgyunsuju, Bunheosil(分虛實), Yongeuibulyonglyuk(用意不用力), Sanghasangsu(上下相隨), Naeoeisanghap(內外相合), Sangyunbudan(相連不斷), Dongchungguchung(動中求靜).

• Clinical and Experimental Pediatrics
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• 제59권9호
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• pp.381-383
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• 2016

Painful legs and moving toes (PLMT) syndrome is characterized by spontaneous movements of the digits and pain in one or both lower extremities. Of the reported cases, a majority of the patients was female, and the mean age of onset was 58 years. Only one pediatric case has been reported so far. Herein, we report the first adolescent case of PLMT in Korea. A 16-year-old girl complained of tingling pain in the left leg and involuntary movement of the ipsilateral great toe one month after a second untethering surgery. Three years ago, she had undergone untethering surgery to correct lipomeningomyelocele at the S2 level of the conus medullaris. At that time, she was diagnosed with polyradiculopathy at the left L5 level with axonal involvement. We diagnosed her with PLMT syndrome and prescribed gabapentin. Her symptoms diminished within a day. Complete relief from involuntary movement of the toe was achieved within four months. PLMT is a rare syndrome but it should be considered in the differential diagnosis of children and adolescents with limb pain and spontaneous movement in their toes.

• Archives of Plastic Surgery
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• 제33권1호
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• pp.116-119
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• 2006

Management of chronic wound has been a great problem to many surgeons because the wound is usually associated with an underlying disease of the patient. Without accurate diagnosis and treatment of the disease, the wound can not be healed. Systemic vasculitis is a rare systemic disease which causes inflammation and obstruction of the vessels. This autoimmune disease involves multiple organs and may inflict skin wound spontaneously without traumas. It would improve or aggravate the wound in proportion to the activities of the disease. Our experience is a case of 28-year-old female who has had chronic ulcers on her right foot, especially on the great toe for 1 year. Although she had several operations of sympathectomy, debridement and artificial dermal graft, her wound was not improved. She has been diagnosed as systemic vasculitis during the evaluation for histopathology and cause of fever and pancytopenia. After medical treatments, she had the operation of adipofascial turnover flap coverage and skin graft, and the wound was improved without any complication or relapse. The diagnosis and treatment of the underlying disease should be ahead of the management of chronic wound.

• 대한족부족관절학회지
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• 제10권1호
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• pp.96-100
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• 2006

Gout in the sesamoid of the great toe is very rare, such that to our best knowledge, there have been only four reports internationally. We present a case of hallucal medial sesamoid gout in the respect of the literature review, clinical, pathological features and surgical outcome.

• 대한족부족관절학회지
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• 제11권1호
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• pp.107-110
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• 2007

Synovial chondromatosis is an uncommon non-neoplastic condition of the joints, forming multiple cartilaginous nodules in the synovium. The lesion usually tends to involve large joints, and the occurrence in the small joint of foot is very rare. We would like to report a case of synovial chondromatosis which was confused with Freiberg infarction in the 1st metatarsophalangeal joint of the foot.

• Journal of Korean Neurosurgical Society
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• 제45권4호
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• pp.249-252
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• 2009

We report on a case of thrombosis of the left common iliac artery following anterior lumbar interbody fusion (ALIF) of L4-5 in a 79-year-old man with no previous medical problems, including peripheral vascular disease. After completing the ALIF procedure, the surgeon could not feel the pulsation of the left dorsalis pedis artery, and the oxygen saturation ($SaO_2$) had fallen below 90% from pulse oxymetry on the left great toe. Thrombectomy was successfully performed after confirming the thrombus in the left common iliac artery using Computed Tomography (CT) angiography. Thrombosis of the common iliac artery is very rare following ALIF. However, delayed diagnosis can lead to disastrous outcome. Although elderly patients have no cardio-vascular disease or vessel calcification in pre-op evaluation, the possibility of a complication involving L4-5 should be considered.

• 한국전문물리치료학회지
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• 제8권3호
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• pp.35-41
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• 2001

In-shoe measurement systems allow the clinician and researcher to examine the pressure parameters within the shoe. The purpose of this study was to investigate the test-retest reliability of plantar pressures using the Parotec system over speeds and plantar regions. Seventeen healthy subjects were recruited for the study. Sampling rate was 100 Hz, and data of six variables (pressure on medial heel, lateral heel, 1st metatarsal head, 5th metatarsal head, and great toe and total impulse) were collected in four different gait speed (1.0 m/sec, 1.5 m/sec, 2.0 m/sec, and comfortable walking speed) in each day. The result indicates fair to excellent reliability between the two day test. Intraclass correlation coefficients (ICCs) ranged from .693 to .979, and range of reliability was similar depending on the speed and plantar region. In most cases, data recorded by the Parotec systems provide good evidence for the reliability.