• 한국운동역학회지
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• 제27권2호
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• pp.149-155
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• 2017

Objective: The purpose of this study was to investigate the effects of three visual conditions (eyes opened, eyes closed, and wearing of a head mounted display [HMD]) on single-leg standing through kinematics and kinetic analysis. Method: Twelve college students (age: $24.5{\pm}2.6years$, height: $175.0{\pm}6.4cm$, weight: $69.2{\pm}5.1kg$) participated in this study. The study method adopted three-dimensional analysis with six cameras and ground reaction force measurement with one force plate. The analysis variables were coefficient of variation (CV) of the center of body mass, head movement, ground reaction force, and center of pressure, which were analyzed using one-way analysis of variance with repeated measures according to visual conditions. Results: In most cases, the results of this study showed that the CV was significantly higher in the order of HMD wearing, eyes closed, and eyes opened conditions. Conclusion: Our results indicated that body sway was the largest in the HMD wearing condition, and the risk of falling was high owing to the low stability.

• 국제물리치료학회지
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• 제9권4호
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• pp.1676-1682
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• 2018

The purpose of this study was to investigate the short-term effects of lumbar rotational mobilization under the single-leg standing (SLS) position. Fifteen healthy individuals were recruited, and randomized to agroup of trunk rotational exercise (TRE) and lumbar rotational mobilization (LRM). Trunk twist rotational exercise was performed to the TRE group, and mobilization was applied to the LRM group on the lumbar spine. Velocity of the center of pressure (VCOP) and center of pressure (COP) for each participant were measured through SLS. COPs were not significantly increased or decreased after treatment in both groups. VCOPs also did not change considerably except on the right side when the eye was closed. There was no significant difference between COPs and VCOPs in two groups. This study suggests that trunk rotation exercise and lumbar rotation mobilization would have similar effects on balance ability.

• 대한통합의학회지
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• 제8권3호
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• pp.143-151
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• 2020

Purpose: This study aimed to investigate the effect of single-leg stance training according to different support surfaces on walking speed and balance in patients with chronic hemiplegia. Methods: Twenty-two patients with chronic stroke were randomly categorized into an experimental group (11 patients) and a control group (11 patients). In the experimental group, single-leg stance training was performed on an unstable surface after 50 min of general physical therapy. In the control group, single-leg stance training was performed on a stable surface after 50 min of general physical therapy. All participants performed five sets of single-leg stance exercises per minute and rested for 3 min. The intervention was performed 5 times a week for 4 weeks, and each patient was evaluated using the Berg Balance Scale (BBS), Fugl-Meyer Assessment Scale (FMA), and difference in walking speed between the first and last day of the intervention. Results: Compared to baseline measurements, both study groups showed significant increases in FMA, BBS, and walking speed (p<.05) after the intervention. However, there was no statistically significant difference (p>.05) between the experimental and control groups. However, in the experimental group, the increases in FMA, BBS, and walking speed were 3.36 %, 9.50 %, and 7.71 %, respectively. In the control group, the increases in FMA, BBS, and walking speed were 2.39 %, 6.65 %, and 7.64 %. Conclusion: Single-leg stance training on different support surfaces could help improve walking ability and balance in patients with chronic hemiplegia.

• Archives of Plastic Surgery
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• 제32권4호
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• pp.539-542
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• 2005

Reconstructions of soft tissue defect of the posterior ankle including Achilles the tendon should take into account not only coverage but functional outcome. Various methods of tendon transfer and tendon graft have been reported as a single-stage procedure. With advances and refinements in microsurgical techniques, several free composite flaps including tendon, fascia, or nerve have been used in single-stage reconstructions of large defects in this area minimizing further damage to the traumatized leg. However, when free flap is not feasible for some reasons, this cannot be accomplished successfully. Here we present a patient with Achilles tendon and circumferential large soft tissue defect. Because of circulatory compromise of the lower extremity, free flap reconstruction could not be applied. Instead, cross-leg composite flap of the dorsalis pedis flap including the extensor hallucis brevis musle and tendon, and tendon strips of the Second, third and fourth extensor digitorum logus were employed, Functional reconstruction of the tendon and resurfacing were obtained at the same time. The flap was detached 3 weeks postoperatively, and the transplanted flap has survived without any complications. By 3 months after surgery, full weight bearing, tip-toe standing and even walking without crutch assistance was possible. When functional reconstruction with the free flap is unattainable in the large defect of the posterior ankle including the Achilles tendon, cross-leg composite island flap of dorsalis pedis flap and tendon strips of the extensor digitorum longus tendon is a viable alternative.

• Journal of Korean Neurosurgical Society
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• 제38권3호
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• pp.196-201
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• 2005

Objective : Among upper lumbar disc herniations, L1-2 disc herniations are especially rare. We present the specific clinical features of L1-2 disc herniation and compared results of different surgical options. Methods : The authors undertook a retrospective single institution review of the patients who underwent surgery for L1-2 disc herniation. Thirty patients who underwent surgery for isolated L1-2 disc herniations were included. Results : Buttock pain was more frequent than anterior or anterolateral thigh pain. Standing and/or walking intolerance was more common than sitting intolerance. The straight leg raising test was positive only in 15 patients [50%]. Iliopsoas weakness was more frequent than quadriceps weakness. Percutaneous discectomy group demonstrated worse outcome than laminectomy group or lateral retroperitoneal approach group. Conclusion : Standing and/or walking intolerance, positive femoral nerve stretch test, and iliopsoas weakness can be useful clues to the diagnosis of L1-2 disc herniation. Posterior approach using partial laminectomy and medial facetectomy or minimally invasive lateral retroperitoneal approach seems like a better surgical option for L1-2 disc herniation than percutaneous endoscopic discectomy.

• The Journal of Korean Physical Therapy
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• 제16권2호
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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.

• 한국체육학회지인문사회과학편
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• 제55권6호
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• pp.749-757
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• 2016

이 연구의 목적은 요가의 한발서기자세를 수련 후 신체안정화에 어떠한 영향을 미치는지를 규명하는 것이다. 요가수련 경험이 없는 20대 여성 13명을 대상으로 24개월간 수련 전·후의 3D동작분석과 근육 생체 신호를 측정하였고 분석 결과는 다음과 같다. 첫째, 댄서포즈에서 왼쪽 무릎의 y축과 오른쪽 발목의 x축, 그리고 트리포즈에서 오른쪽 발목의 x축, 왼쪽 발목 y축의 관절 움직임 범위가 작아지며 통계적으로 유의한 차이를 보였다(p<.05). 둘째, 몸통과 골반의 정렬각은 댄서포즈와 트리포즈 모두에서 유의한 차이가 없었다. 셋째, 질량중심 이동거리는 트리포즈의 Y, Z방향에서 작아지며 유의한 차이를 보였다(p<.05). 넷째, 트리포즈 동작에서 양쪽 척추기립근, 복직근 및 왼쪽 대퇴사두근의 근활성도가 커지면서 유의한 통계적 차이를 보였다(p<.05). 이러한 결과는 요가 훈련이 특히 발목과 질량중심 움직임을 작게하고, 코어근육을 강화시켜 안정적 자세를 만드는데 중요한 역할을 한다고 할 수 있다. 결론적으로 요가 훈련은 자세 안정화에 효과가 있으며, 자세교정에 영향을 미친다고 할 수 있다. 추후 요가훈련을 통해 자세안정화를 볼 수 있는 정렬각의 변인을 통해 얻을 수 있는 정보에 대한 연구가 더 필요할 것으로 사료된다.

• 대한정형외과스포츠의학회지
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• 제6권2호
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• pp.92-98
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• 2007

목적: 전방십자인대 파열 후 자가 슬괵건을 이용하여 경골부 잔류 조직 을 보존한 관절경적 전방십자인대 재건술의 임상적 결과를 평가하였다. 대상 및 방법: 2003년 2월부터 2006년 5월까지 치료받은 35예의 증례를 대상으로 하였다. 수상 후 수술까지의 평균 기간은 2.6개월 이었다. 수상의 원인은 대부분 스포츠와 관련된 외상 이었다. 평균 추시 기간은 17개월 이었다. 경골부 잔류 조직은 전방십자인대 재건술 동안 손상을 입지 않도록 가능한 주의를 기울이며 보존하였다. 수술 후 재활은 신전 제한 보조기로 2주 동안 관절 운동을 연기한다는 것을 제외하고는 전방십자인대 재건술 후 일반적 재활과 동일하게 하였다. 임상적 평가에는 운동 범위, Lachman 검사, pivot-shift 검사, KT-2000 arthrometer로 전방 전위 측정, Lysholm score 및 한 쪽 다리 지지검사(single limb standing test)로 고유수용 감각을 측정하는 방법을 이용하였다. 결과: 슬관절의 운동범위는 굴곡 구축 없이 정상이었고 Lachman 검사와 pivot-shift검사에서는 모두 음성이었다. KT-2000 arthrometer를 이용한 환측과 건측의 전방전위 차이는 6.7mm에서 2.2 mm로 향상되었다. Lysholm score의 평균은 수술전 81점에서 추시시 96점으로 향상되었다. 고유 수용감각 측정을 위한 한 쪽 다리 지지 검사(single limb standing test)에서는 정상 측 다리와 통계학적으로 유의한 차이를 보이지 않았다. 결론: 전방십자인대 파열 후 경골부 잔류 조직을 보존하는 재건술은 기계적 수용기와 고유 수용 감각을 보존하고 좋은 기능적 회복을 기대할 수 있는 술식으로 사료되나, 더 많은 증례로 장기간의 추시 관찰이 요할 것으로 사료 된다.

• 대한물리치료과학회지
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• 제11권2호
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• pp.5-17
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• 2004

The purpose of this study was to investigate the relationship between normal adults' resting calcaneal stance position(RCSP) and postural sway. Subjects were 70 normal adults(34 men and 36 women) in their twenties who attend S. University. Postural sway during a single limb stance was measured using the CMS 10 Measuring System when subjects positioned on the balance trainer in their bare foot. RCSP while subjects were standing on the glass plate was measured using the angle tinder after subjects were positioned in prone to divide equally lower leg and calcaneus using the goniometer. The result was as follows. There were significant weak positive correlations between RCSP and postural sway(r=0.362, p<0.01), the leg of the small RCSP within a subject has the small postural sway index($X^2=43.758$, p<0.001). There was no significant difference between groups of rearfoot valgus(RCSp<$2^{\circ}$) and those of rearfoot varus (RCSp>$2^{\circ}$) in the postural sway. In conclusion, there is a weak relationship between increasing the absolute value of RCSP and increasing postural sway.

• 대한물리의학회지
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• 제11권1호
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• pp.93-105
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• 2016

PURPOSE: The purpose of this study was to determine the effect of corrective exercise on hip joint range of motion, lower limb alignment, radiographs of hip and knee joints, and quadriceps muscle activity in a patient with knee joint valgus deformity. METHODS: A single-subject A-B-A experimental design was used to determine the effects of therapeutic exercise. The single-subject was a 27-year-old male, who presented with knee joint valgus deformity. Corrective exercise program was performed for 40 min/day twice a week for 12-week. Range of motion (hip flexion, extension, abduction, adduction, internal rotation, and external rotation), lower limb alignment test (Q-angle, rear foot alignment, and leg length), standing anterior-posterior radiographs (neck shaft angle and knee joint space), and quadriceps muscle activity of both lower limbs were measured before (A 1), after 6 weeks (B 1) and after 12-weeks (B 2) of corrective exercise and after 6 weeks of exercise completion (A 2). RESULTS: Hip range of motion increased in all directions of both sides at B 2 and A 2 compared to at A 1. Q-angle of both side and leg length discrepancy decreased at B 2 and A 2 compared to at A 1. Neck shaft angle and knee joint space of both sides improve at B 2 and A 2 compared to at A 1. Quadriceps of both side muscle activities improved at B 2 and A 2 compared to at A 1. CONCLUSION: We demonstrated that corrective exercise increases range of motion, and improves lower limb alignment and muscle activity in a patient with knee joint valgus deformity.