• Archives of Reconstructive Microsurgery
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• 제18권2호
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• pp.49-54
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• 2009

Purpose: To evaluate the result of muscle free flap transplantation in chronic osteomyelitis of the tibia and calcaneus occurred from open fractures and exposed bones and internal fixatives. Materials and Methods: The free muscle flap were transferred in the tibia and calcaneus and followed up average 7.3 years at the department of orthopedic surgery from March 1997 to September 2009. Six patients were male and 1 case female averaged 50.3 years of age. Two latissimus dorsi myocutaneous free flaps were transplanted to the exposed 2/3 of the tibia with soft tissue defect, one rectus abdominis muscle free flap to the mid 1/3 of the tibia and four gracilis muscle free flaps to the distal 1/3 of the tibia and calcaneus. Results: At average 7.2 years follow-up, all of the 7 cases obtained solid bone union in the X-ray and kept sound soft tissues without pus discharges. The overall result of bone union, healed soft tissues defect and normal knee and ankle joint range of motion were excellent. Conclusion: The free muscle flap transferred to the chronic osteomyelitis of the tibia and calcaneus showed excellent results in bone union and eradication of the pus forming bacteria by its abundant blood flow.

• Archives of Reconstructive Microsurgery
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• 제22권1호
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• pp.24-28
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• 2013

Purpose: Soft tissue defect of the hand, which cannot be covered with skin graft or local flap, is usually reconstructed using a free flap. Temporoparietal fascial free flap is one of the best alternatives for functional reconstruction of the hand with exposed tendons, bones, and joints. Materials and Methods: We have experienced four cases of reconstruction using a temporoparietal fascial flap with a skin graft and followed up for 20 years. We conducted a retrospective review of the patients' clinical charts and photos. Results: At the time of initial injury, the average age of patients was 50.3 (39~62) years. The radial artery was used for reconstruction of the dorsal side of the hand, whereas the ulnar artery was used for that of the volar side of the wrist. Short term complication such as skin graft loss and donor site alopecia occurred. However, during the long term follow-up period, no change of flap volume was noted, and full range of motion in the adjacent joint was maintained. In addition, hyperpigmentation of the grafted skin on the flap disappeared gradually. Conclusion: Selection of the optimal flap is important for reconstruction of the hand without functional limitation. We obtained satisfactory soft tissue coverage and functional outcomes using a temporoparietal fascial free flap and followed up for 20 years.

• 대한정형도수물리치료학회지
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• 제9권2호
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• pp.25-45
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• 2003

Sling exercise treatment(S-E-T) is a therapeutic exercise based on scientific studies for the purpose of treating musculoskeletal or neurological disorders thereby improving strength, endurance, and skills for sensory-motor integration. Exercise resistance and intensity can be modified in various ways by changing the length of rope, patient position, therapist's manual resistance, and using elastic rope. The therapist can also progress to successively higher levels of exercise resistance and intensity by changing the position of the hanging point: the subject of this article. In brief, there are three axial components in S-E-T; hanging point, motor axis, and suspension point. The hanging point can be changed in several ways in relation to the joint; axial, superior, inferior, medial, and posterior hanging points. The position of the hanging point affects the amount of load on agonist and antagonist muscles as well as on the range of motion. To create an advanced exercise program, selection of hanging point can be two-dimensional such as superior-lateral or anterior-medial. Therapists, therefore, can freely but carefully select the best hanging point based on the purpose of the exercise and their level of knowledge in S-E-T.

• 재활복지공학회논문지
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• 제11권4호
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• pp.349-354
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• 2017

본 논문은 개인위생(personal hygiene)을 위한 보조기기(assistive product)의 하나인, 고령자 및 장애인을 위한 높이조절 세면기의 설계 가이드라인을 제안하였다. 본 연구에서는 기존의 세면기와 프로토타입 높이조절 세면기를 이용한 생체역학적 평가를 진행하였다. 65세 이상 남성 5명(age $68.6{\pm}4.3yrs.$, height $169.8{\pm}5.7cm$, weight $70{\pm}7.7kg$)이 피험자로 참가하였으며, 피험자가 세면기 사용시 3차원 동작측정장치를 이용하여 인체각도를 측정하고, 인체모델을 이용하여 요추에 걸리는 모멘트를 추정하여 평가하였다. 이 결과로부터 최적의 높이 조절 가능 범위가 652[mm]에서 1,162[mm]인 설계 가이드라인을 제시하였다. 일반인 5명의 피험자($25.8{\pm}1.8$세, $175.5{\pm}5.8cm$, $74{\pm}15.7kg$)를 대상으로 높이 조절 세면기의 사용시 그 유효성을 평가하였으며, 그 결과 본 논문에서 제시한 높이조절 범위가 타당함을 보였다.

• 한국운동역학회지
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• 제16권2호
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• pp.25-35
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• 2006

The purpose of this study was to investigate the shock attenuation mechanisms while varying the loads in a backpack during drop landing. Ten subjects (age: $22.8{\pm}3.6$, height: $173.5{\pm}4.3$, weight: $70.4{\pm}5.2$) performed drop landing under five varying loads (0, 5kg. 10kg. 20kg. 30kg). By employing two cameras (Sony VX2100) the following kinematic variables (phase time, joint rotational angle and velocity of ankle, knee and hip) were calculated by applying 2D motion analysis. Additional data, i.e. max vertical ground force (VGRF) and acceleration, was acquired by using two AMTI Force plates and a Noraxon Inline Accelerometer Sensor. Through analysing the power spectrum density (PSD), drop landing patterns were classified into four groups and each group was discovered to have a different shock attenuation mechanism. The first pattern that appeared at landing was that the right leg absorbed most of the shock attenuation. The second pattern to appear was that subject quickly transferred the load from the right leg to the left leg as quickly as possible. Thus, this illustrated that two shock attenuation mechanisms occurred during drop landing under varying load conditions.

• 한국운동역학회지
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• 제16권2호
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• pp.145-151
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• 2006

A large interindividual variability and some abnormally kinematic patterns at the lower extremity were the main features of the gait in children with Down syndrome. The purposes of this study were to investigate the gait asymmetry and biomechanical difference between dominant leg and non dominant leg in children with Down syndrome. Seven boys with Down Syndrome(age: $120{\pm}0.9yrs$, weight $34.4{\pm}8.4kg$, leg length: $68.7{\pm}5.0cm$) participated in this study. A 10.0 m ${\times}$ 1.3 m walkway with a firm dark surface was built and used for data collection. Three-dimensional motion analyses were performed to obtain the joint angles and range of motions. The vertical ground reaction forces(%BW) and impulses($%BW{\cdot}s$) were measured by two force plates embedded in the walkway. Asymmetry indices between the legs were computed for all variables. After decision the dominant leg and the non dominant leg with max hip abduction angle, paired samples t-test was employed for selected kinematic and ground reaction force variables to analyze the differences between the dominant leg and the non dominant leg. The max hip abduction angle during the swing phase showed most asymmetry, while the knee flexion angle at initial contact showed most symmetry in walking and running. The dominant leg showed more excessive abduction of hip in the swing phase and more flat-footed contact than the non dominant leg. Vertical peak force in running showed more larger than those of in walking, however, vertical impulse showed more small than walking due to decrease of support time. In conclusion, the foot of dominant leg contact more carefully than those of non dominant leg. And also, there are no significant difference between the dominant leg and the non dominant leg in kinematic variables and ground reaction force due to large interindividual variability.

• 한국운동역학회지
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• 제19권2호
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• pp.311-322
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• 2009

본 연구는 골프 기술 가운데 하나인 페이드샷에 대하여 3차원 영상분석을 시도하여 비교분석한 연구이다. 연구 대상은 남자 프로 골프선수 3명을 대상으로 하였으며 7번 아이언으로 국한하여 실험을 실시하였다. 이때 운동학적 주요 변인들을 산출하여 그 변인들에 대한 특성을 파악하고 지도자와 선수들에게 자료를 제공함으로써 효과적인 지도 방법 및 원리를 제공하는데 목적을 두었다. 그 결과 클럽헤드의 궤도는 아웃사이드에서 인사이드의 형태로 나타나 클럽헤드의 궤적이 이상적인 패이드 샷에 영향을 미치는 것으로 판단된다. 신체중심은 후방으로의 움직임이 나타날 때 실패의 가능성이 높은 것으로 나타나 전방으로의 중심이동이 성공요인에 긍정적인 영향을 미치는 것으로 판단된다. 코킹은 임팩트 후 자연스럽게 팔로스로우를 하여 손목을 풀어 주었으며 움직임의 순서에서 어깨 동작이 먼저 이루어지고 허리가 따라가는 형태로 나타났다. 고관절 각속도는 지연히팅으로 인한 자연스러운 페이드샷이 이루어지는 형태와 일치되었으며 클럽헤드의 속도 또한 임팩트시 코킹이 풀리면서 빠른 것으로 나타났다.

• 대한물리치료과학회지
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• 제15권3호
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• pp.19-29
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• 2008

Background : Ankle inversion sprains are one of the most common injuries in sports and activities of daily living that mostly concern physically active individuals. In most researches, proprioceptive deficit, muscle weakness and/or absent coordination have been regarded as a contributing factors. Despite the high incidence of ankle sprain and instability, therapeutic approaches to properly manage the symptoms have rarely been investigated. This study aimed to identify the effect of proprioceptive exercise program that is easy to integrate in normal training program. Methods : Subjects were randomly allocated to control group and experimental group consisting of 11 and 10 patients, respectively. The conservative treatment for the control group consisted of hot packs, ultrasound and TENS. In addition, the experimental group performed 7 exercises to enhance proprioceptive function of ankle joint. The therapeutic intervention of the controland experimental groups was performed a total of 20 exercise sessions, averaging 50 hour each, 5 times per week for 4 weeks. To compare the two groups, the level of ankle disability was assessed by using the ankle injury score scale in pre- and post-treatment. Results : On assessment of post-treatment, there were statistically significant differences in the scores of all sub-items, except for ankle laxity and range of motion, and the total score of ankle injury score scale between the two groups(p<0.05). In comparison between pre- and post-treatments, the significant difference in the scores of all sub-items and total score didn't appear for the control group, while the scores of most sub-items and total score of the experimental group were shown the statistically significant difference(p<0.05). Conclusion : The findings suggest that the proprioceptive exercise program is more effective for relieving ankle disability than conservative treatment therefore, the program to improve proprioceptive function should be recommended for prevention and rehabilitation of recurrent ankle inversion injuries.

• 대한정형외과 초음파학회지
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• 제1권2호
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• pp.117-121
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• 2008

증식치료는 정상세포나 조직을 성장시키기 위해 성장인자 또는 성장인자 생성 자극제를 주사하는 것이다. 비록 수십 년 동안 논쟁이 되어 오고 있지만 갈수록 더 많은 의사들이 증식치료를 시술하고 있다. 증식치료라는 단어는 1950년 대에 Hacket에 의해 기술되었는데 인대나 근건에 있는 정상조직의 증식을 의미 하였다. 인대 염좌 등의 불완전한 치료는 만성 통증뿐만 아니라 관절불안 등을 초래하고 골관절염의 진행을 촉진할 수 있다. 증식치료는 통상적인 치료에 불응하는 이러한 근골격계 질환에 사용된다. 사용되는 증식제나 수기는 의사마다 수련과정 또는 선호도에 따라 차이가 있을 수 있지만 최근 가장 많이 사용되는 증식제는 10~25%의 포도당이다. 고해상도 초음파기기의 발전에 따라 인대나 근건 등을 실시간으로 볼 수 있게 됨에 따라 이를 증식치료에 접목하여 수기의 정밀도를 높이고 주입되는 약의 확산을 확인 할 수 있게 되었고 그 치료 결과를 기록할 수 있게 되었다.

• 대한인간공학회지
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• 제30권5호
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• pp.605-611
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• 2011

Objective: The aim of this study was to investigate the influence of seat heights for optimizing the ingress/egress performance in the elderly people. Background: Recently elderly users have been increasing in number and the ease of ingress/egress of the vehicle becomes an important issue. Method: Seven elderly subjects participated in this study(age: 71.7${\pm}$3.6yr, height: 167.7${\pm}$5.4cm, weight: 68.1${\pm}$11.5kg). Each subject performed the sitting and rising task from comfortable seated position on the chair under the following conditions: (1) with a lumbar support and (2) without a lumbar support. We measured EMG activities of seven muscles(tibialis anterior, soleus, gastrocnemius, vastus lateralis, rectus femoris, biceps femoris and erector supinae) and ranges of motion in lower limb during sitting and standing from three different heights (400mm, 500mm and 600mm from ground) of slide-up seat. Results: Muscle activities and angular movements of hip and knee joints during standing-up and sitting-down with a high seat height(600mm) were reduced mean 30.4% in extensor muscles, 57.11% in flexor muscle, 18.74% in erector muscle and 31.0% in joints compared with a low seat height(400mm). Conclusion: Muscle activities and joint movements in hip and knee were reduced when rising/sitting from a high seat height(600mm) compared with a low seat height(400mm). Application: This study can be used to design vehicle that are easy to get in and out of by older peoples with or without impairments.