• Journal of Chest Surgery
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• 제16권1호
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• pp.34-39
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• 1983

The syndrome of anomalous muscle bundle dividing the right ventricle into two pressure chambers has been described by many authors. The malformation should not be confused with tetralogy of Fallot itself because the obstructive hypertrophic bands are usually proximal to the right ventricular infundibulum. One case [11 years old male] of double chambered right ventricle due to aberrant muscle bundle with intact ventricular septum is presented. The pressure gradient was 68 mmHg between inflow and outflow tracts of right ventricle on cardiac catheterization. On opening the right ventricle, there noted stenosis of outflow tract by infundibular membrane, hypertrophied anomalous muscle bundle, thickened moderator band & hypertrophied anterior papillary muscle. Open heart surgery was carried out with the aid of extracorporeal support, Anomalous muscle bundle [1.0 cm x 4.0 cm] and infundibular membrane were resected safely. The hypertrophied moderator band was cut at mid-portion and anterior papillary muscle was split vertically. The postoperative course was uneventful and discharged in good condition 2 weeks later.

• The Journal of Korean Physical Therapy
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• 제34권1호
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• pp.45-50
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• 2022

Purpose: The purpose of this study was to compare the spatiotemporal and kinematic gait parameters and muscle activity of the lower extremities between forward walking on sand (FWS) and backward walking on sand (BWS) in normal adults. Methods: This study was conducted on 13 healthy adults. Subjects performed FWS and BWS and the spatiotemporal and kinematic gait parameters of stride time, stride length, velocity, cadence, step length, stance, swing, double support, and hip range of motion (ROM), knee ROM were measured by a wearable inertial measurement unit system. In addition, the muscle activity of the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA), and gastrocnemius (GA) was measured. Results: The stride length, stride velocity, cadence, and step length in the BWS were significantly lower than FWS (p<0.05), and stride time was significantly greater (p<0.05). However, there was no significant difference in the ratio of stance, swing, and double support between the two (p>0.05). The kinematic gait parameters, including hip and knee joint range of motion in BWS, were significantly lower than FWS (p<0.05). The muscle activity of the RF in BWS was significantly higher than FWS (p<0.05), but the muscle activity of the BF, TA, GA did not show any significant differences between the two movements (p>0.05). Conclusion: A strategy to increase stability by changing the gait parameters is used in BWS, and this study confirmed that BWS was a safe and effective movement to increase RF muscle activity without straining the joints. Therefore, BWS can be recommended for effective activation of the RF.

• Journal of Chest Surgery
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• 제20권4호
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• pp.765-772
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• 1987

Double-chambered right ventricle [DCRV] as a clinical and anatomic entity was separated from other forms of right ventricle obstruction, and frequently associated with VSD. We experienced surgical treatment of 6 cases of DCRV with VSD. Among them, PDA in a case, PFO in two cases and one case of mild infundibular PS were associated. Preoperative cardiac catheterizations and RV cineangiograms showed about 69 mmHg. of pressure gradient in average between RV inflow and outflow portion, and filling defect by anomalous muscle bundles in the sinus portion of RV. On operation, VSD and other associated anomaly were corrected after resection of anomalous muscle bundle for relief of the obstruction through the vertical RV-tomy site. Postoperative EKG showed complete RBBB, but hemodynamic problems were not developed. Postoperative cardiac catheterizations showed markedly decreased pressure gradient between two chambers, that was about 15 mmHg. in average. Postoperative course was smooth and discharged without any problems.

• 대한인간공학회지
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• 제11권1호
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• pp.81-92
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• 1992

A two-dimensional static biochemical model of lower extremity in the seated posture was developed to assess muscular activities of lower extremity required for a variety of foot pedal operations. We found that the double linear optimization method that has been used for modelling articulated body segments does no predict the forces generated by biarticular muscles reasonably, so the revised double linear optimization scheme was used to consider the synergistic effects of biarticular muscles in our model, assuming that the muscle forces are distributed proportionally based on their physiological cross sectional area. The model incorporated three rigid body se- gments with six muscles to represnet lower extremity. For the model validation, three male subjects performed the experiments in which EMG activities of six lower extremity muscles were measured. Predicted muscle forces were compare with the corresponding EMG amplitudes and it showed no statistical difference. The model being developed can be used to design and assess pedal and foot-related tool design.

• 대한중풍순환신경학회지
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• 제14권1호
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• pp.23-30
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• 2013

■ Objectives This study is to examine change of gait parameters on shoes sole height(high heels, MBT shoes, house shoes) through gait analyzer. ■ Methods The subjects of this study were 12 women in their twenties. Gait analysis system is 5m in total length and gait is led to be comfortable. They put three kinds of shoes each and were led to walk 5m on gait analysis system. ■ Results There were significant differences in step length, single support and load response of gait parameters and in stride length and total double support at double support phase. ■ Conclusion Muscle activity differs in that different that shoes sole height and form because tibialis anterior muscle has strengthen and gastrocnemius has stretched. Therefore we think that patients with knee joint problem consider gait parameters when shoes select.

• The Journal of Korean Physical Therapy
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• 제29권3호
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• pp.135-141
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• 2017

Purpose: This study was to identify the anticipatory postural adjustment (APA) mechanism which is represented by the onset time of trunk muscles and the displacement of the center of pressure (COP) according to the different base of support (BOS) during upper extremity movement. Methods: Thirty healthy subjects (14 males, 16 females) participated in this study. The movement was performed for 10 trials during each of various BOS (shoulder - width double leg stance, narrow base double leg stance, tandem stance, non-dominant single leg stance) at the 1.2 Hz frequency. Electromyography was used to measure muscle onset time and biorescue was used to measure characteristics of the displacement of COP. Surface bipolar electrodes were applied over the right deltoid anterior, right latissimus dorsi, both rectus abdominis, both internal oblique and both erector spinae. The data were analyzed by repeated one-way ANOVA and Duncan's post hoc test. Results: The study has revealed following. There were significant differences with muscle onset time in each BOS (p<0.01). There were significant differences in characteristics of the COP in each BOS (p<0.01). Conclusion: The study found that the more narrowed the basis requires the more rapid anticipatory postural control in contralateral postural muscle when the upper extremity movement is performed.

• Archives of Plastic Surgery
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• 제50권5호
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• pp.496-500
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• 2023

Fournier's gangrene is a life-threatening infection which requires prompt recognition, early surgical debridement of unhealthy tissue, and initiation of broad-spectrum antibiotics. Relook debridement are usually performed until all the devitalized tissue has been removed. Involvement of the anal sphincter may result in significant morbidity such as permanent incontinence. Dynamic reconstruction of the anal sphincter has always been one of the holy grails in the field of pelvic reconstruction. We demonstrate a new method of camera shutter style double-opposing gracilis muscle flaps that allows dynamic sphincteric function without the need for electrostimulation. The bilateral gracilis muscles are inset in a fashion that allows orthograde contraction of the muscle to narrow and collapse the neoanal opening. With biofeedback training, the patient is able to regain dynamic continence and return to function without a stoma. There was also no need for neurotization or microsurgery techniques to restore sphincteric function to the anus. The patient was able to reverse his stoma 14 months after the initial insult and reconstruction with biofeedback training without the use of electrostimulation.

• Archives of Plastic Surgery
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• 제35권2호
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• pp.187-192
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• 2008

Purpose: Generally speaking, most of Korean have smaller eyes than those of Caucasian and they have epicanthus with narrow palpebral fissure. It makes external appearance looking dull because the length of the palpebral fissure is short and there is a epicanthus. In case the function of the levator muscle is weak, their eyes look much smaller. Epicanthus and weak levator muscle function make the eyes look dull. The above mentioned, authors want to introduce double eyelid operation, epicanthoplasty, levator plication to extend and lengthen the palpebral fissure. Methods: From August 2001 to August 2004, there were 138 cases that had double eyelid operation with epicanthoplasty or levator plication. the 69 cases of them had double eyelid operation and epicanthoplasty, the 33 cases of them had double eyelid operation and levator plication and the 36 cases of them had double eyelid operation and epicanthoplasty and levator plication. Results: After the operation, the length and height of the eyelid are improved remarkably, and most of the patients were satisfied. The length of the eyelid is improved 3 to 5mm($3.4{\pm}0.5mm$) in case of the epicanthoplasty, the width of the eyelid is improved 3 to 4mm($3.1{\pm}0.3mm$) by the levator plication. The length of the eyelid is improved 3 to 5($3.4{\pm}0.4mm$) and the width is improved 2 to 4mm($2.9{\pm}0.5mm$) by the epicanthoplasty used levator plication. Conclusion: The improvement of the eyelid length is almost the same as epicanthoplasty and levator plication are done simultaneously. But the improvement of the eyelid width is less shorter when epicanthoplasty and levator plication are done simultaneously than the case of levator plication alone. This is because there is a tension influencing on the limitation of widening palpebral fissure to fix the epicanthal tendon. This method is recommendable for the patients who want to have much bigger eyes.

• The Journal of Korean Physical Therapy
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• 제32권5호
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• pp.302-306
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• 2020

Purpose: The purpose of this study was to investigate comparisons of vastus medialis (VMO) and vastus lateralis (VL) muscle activities according to different heights during drop landing in flatfooted adults. Methods: Fifteen subjects with a flat foot arch and 15 subjects with a normal feet arch were participated. Subjects performed a double limb drop landing task from 20, 40, and 60 cm heights. Surface electromyography was used to measure the muscle activities of the VMO and VL during drop landing. Results: There were significant differences of muscle activities in the VMO, VL, and the VMO and VL ratio between groups. The electromyography values of VMO, VL, and the VMO and VL ratio in the normal group were significantly greater than in the flat foot group, and muscle activities and the VMO and VL ratio significantly increased with landing heights in the both groups. Conclusion: Our results indicated that muscle activity patterns of VOM and VL in the flat foot group were lower at heights than in the normal group, so calf tightness was negative effects on balance and gait ability, so assessment of muscle activation patterns in the knee extensors should be considered during exercise and treatment of flat feet.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1992년도 춘계공동학술대회 발표논문 및 초록집; 울산대학교, 울산; 01월 02일 May 1992
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• pp.358-363
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• 1992

A two-dimensional static biomechanical model of lower extremity in the seated posture was developed to assess muscular activities of lower extremity required for a variety of foot pedal operations. Muscle forces of the model were predicted using the double linear optimization scheme. For the model validation, three subjects performed the experiments which measured EMG activities of six lower extremity muscles. Predicted muscle forces were compared with the corresponding rectified intergrated EMG amplitudes and it showed reasonable results.