Bilhaut-Cloquet 변법을 이용한 이열엄지의 교정

손형빈,손대구,김현지,김준형,한기환 대한성형외과학회 2006 Archives of Plastic Surgery Vol.33 No.4

Purpose: As the traditional treatment of the Wassel's type I or II of bifid thumb, Bilhaut-Cloquet, has always been the standard method despite several disadvantages such as tearing of the finger nail, injuries of the growth plate, joint instability, and long visible scarring. To overcome these drawbacks, we applied a modified Bilhaut-Cloquet Method. Methods: The subjects used for the this study were 10 of 20 patients evaluated. The patients underwent modified methods under every type of Wassel's classification. We designed a central wedge Zig-Zag incision and removed the nail and bony tissues in the remaining digit, but not soft tissue if possible, and transferred the ligaments, tendons, and soft tissue to the remaining thumb from the extra digit. We evaluated the patients' lack of extension, the total ROM of the MP and IP joints, the ROM of IP joints, and the lateral deviations of the reconstructed thumb. Results: The results were encouraging, with all patients showing a good functional and aesthetic outcome. Conclusion: The modified method proved a very effective procedure in the treatment of bifid thumb in all types, especially types I or II.

돼지를 이용한 만성피부결손상처의 모델

손형빈,손대구,김준형,한기환,류남희,권선영 대한성형외과학회 2006 Archives of Plastic Surgery Vol.33 No.5

Purpose: Animal models of a chronic wound are yet to be fully developed, and animal studies on this subject has yet to take place. The purpose of this study is to create the foundation for research on chronic wound healing based on a swine model, the most similar to that of a human. Methods: Three female 2-3 month old 'yolkshires' were used. Total of eight full thickness skin defects, 6 × 3 cm sized, were created on the back of each pigs. Three groups were created for comparison; Group I (n=4) was left as they were after full skin thickness excision, while the excised tissues of Group II (n=3) were turned inside out and sutured so that the epidermis would come in contact with the fascia. Group III (n=3) were excised full skin thickness in depth and silicone blocks were implanted in them. Dressing was not practised so that the wounds would be vulnerable to infection. Results: In Group III, the skin contraction rate was the least among the three groups for each three weeks of observation respectively. Also during the three weeks, bacteral colonization was at the highest among the comparison. On the third week, inflammatory cells were still active, but the generations of epidermis and collagen synthesis were detected minimally.Conclusion: The Group III was relatively the most similar model of chronic wounds. and modification of the silicone blocks, could provide us with a very effective chronic skin wound model similar to human.

복합조직이식을 이용한 갈고리 손톱 변형 교정의 임상례

손대구,손형빈,김현지 대한성형외과학회 2007 Archives of Plastic Surgery Vol.34 No.3

Purpose: Hook nail deformity is caused by inadequately supported nail bed due to loss of distal phalanx or lack of soft tissue, resulting in a claw-like nail form. A composite graft from the foot bencath the nail bed gives adequate restoration of tip pulp.Methods: From September of 1999 to March of 2004, six patients were treated for hook nail deformity and monitored for long term follow up. Donor sites were the lateral side of the big toe or instep area of the foot. We examined cosmetic appearance and nail hooking and sensory test. The curved nail was measured by the picture of before and after surgery.Results: In all cases, composite grafts were well taken, and hook nail deformities were corrected. The curved nail of the 4 patients after surgery were improved to average 28.7° from average 55.2 before surgery. The static two point discrimination average was 6.5mm and the moving two point discrimination average was 5.8mm in the sensory test. Conclusion: Composite graft taken from foot supports the nail bed with the tissue closely resembling the fingertip tissue, making it possible for anatomical and histological rebuilding of fingertip.

이하선에 발생한 양측성 Warthin씨 종양 치험례

노상훈,손형빈,정영진,홍인표 대한두개안면성형외과학회 2008 Archives of Craniofacial Surgery Vol.9 No.2

Warthin's tumor is a benign neoplasm that most frequently occurs in the parotid gland. Warthin's tumor shows a tendency of bilateral occurrence, but most of bilateral tumors occur at different time. It usually affects older man and grows slowly. Surgical excision is appropriate treatment for patients with Warthin's tumor and rarely recurs after removal. We report a rare case of bilateral Warthin's tumor which detected at the same time. A 54-year-old man had painless, slowly growing masses on the both mandibular angles. The masses were detected ten years ago. CT scan, ultrasonographic evaluation and fine needle biopsy was performed for preoperative diagnostic study. Superficial parotidectomy was done one after the other at ten-day intervals. After excision, histological examination revealed a mixture of ductal epithelium and a lymphoid stroma. The overlying surface of lymphoid tissue was covered with epithelial cells that was abundant of eosinophilic cytoplasm. Both masses were diagnosed as Warthin's tumor. Postoperatively, the patient did well and had no evidence of recurrence of tumor for 2 years follow-up period. Authors experienced a rare case of bilateral Warthin's tumor which detected at the same time. We recommend stepwise superficial parotidectomy at one or two-week intervals as treatment of bilateral Warthin's tumor.

자살시도로 인한 손목 열상 후 유착에 의해 발생한 수근부 정중신경포착증후군 치험례

백인수,노상훈,손형빈,홍인표,Baek, In-Soo,Roh, Sang-Hoon,Sohn, Hyung-Bin,Hong, In-Pyo 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.5

Purpose: Median nerve entrapment syndrome within carpal tunnel is usually called carpal tunnel syndrome and it is the most common form of peripheral nerve entrapment syndrome. Many factors such as diabetes mellitus, hypothyroidism, hormonal replacement theraphy, corticosteroid use, rhematoid arthritis and wrist fractures may cause carpal tunnel syndrome. To the best of our knowledge, this is the first case report of median nerve entrapment syndrome due to adhesion of laceration wound after suicidal attempt. Methods: A 28-year-old woman presented with a sensory change and thenar hypotrophy on her left hand. On her history, she attempted suicide by slashing her wrist. Initial electromyography (EMG) showed that the nerve conduction velocities of median nerve was delayed. Therefore, we performed surgical procedures. When exploration, Fibrous scar tissue observed around the median nerve but nerve had not been injured. Transcarpal ligament was completely released and adjacent fibrous tissue was removed to decompress the median nerve. Results: The postoperative course was uneventful until the first year. Opposition difficulty and thenar hypotrophy were improved progressively after the surgery. Sensory abnormality was slowly improved over one year. Conclusion: We report a case of median nerve entrapment syndrome that was caused by adhesion of laceration wound after suicidal attempt. This is an unusual cause of median nerve entrapment syndrome, the symptoms were relieved after transcarpal ligament release and fibrous scar tissue removal.

구순열비교정술 후 외비주형술(Extranasal Molding): 비주길이의 사진계측학적 분석

한기환,백대향,손형빈,김준형,손대구 대한성형외과학회 2006 Archives of Plastic Surgery Vol.33 No.5

Purpose: In the correction of cleft lip, there have been various methods to minimize recurrence of the nasal deformity after primary nasal surgery. After cheiloplasty and primary nasal surgery, we tried to elongate the columella of the cleft side, to stretch the vestibular lining of cleft side, and to elevate the alar cartilage of the cleft side with a molding prong.Methods: We had fifteen cleft lip patients; 12 unilateral cases(6.3-8.2 months), and 3 bilateral cases(3 -7.5 months). Immediately after primary repair of the cleft lip, the toboggan shaped molding prong was located to deep inside of vestibular web of the cleft side. It was persistently suspended by a silicone tube which was connected to the prong and the frontal scalp. The results were analyzed with Photoshop photogrammetrically for 6-48 months with on average of 20.6 months. We measured the proportion index of columellar length-interalar distance for three times(preoperation, immediate postoperation, and postoperation) on the nasal base views. Results: In unilateral, the index had a significant increase statistically between preoperation(10.73) and immediate postoperation(23.96). It is supposed that columellar length was reconstructed to 105.80% of normal side. But, it was decreased to maintain 87.7% of normal side in postoperation(20.54). The results were similar in bilateral. The linear scars by suture penetrating nose skin were not discernable. Conclusion: In summary, placement of the molding prong could elongate the reconstructed columella with some relapse postoperatively.

수지에 발생한 정맥류 - 2예 보고 -

이진석,정영진,손형빈,홍인표,Lee, Jin-Seok,Jung, Young-Jin,Sohn, Hyung-Bin,Hong, In-Pyo 대한미세수술학회 2008 Archives of reconstructive microsurgery Vol.17 No.1

Varix of the digit is generally defined as an enlarged, tortuous palmar digital vein with or without thrombus within it. It usually presents as a firm, blue mass on the volar aspect of the finger. Mechanical compression or chronic trauma to veins on the volar surface of a digit appears central to the pathogenesis of this lesion. Aging phlebectasia has also been considered as a cause of this lesion in the elderly. A tourniquet test may be useful in demonstrating the presence of a digital varix, but it is confirmed by postoperative microscopic examination. Excision of a symptomatic lesion has proven to be curative. We report two cases of symptomatic digital varix which developed in the fourth finger with a review of literatures.

Influence of Surface Area Change of Spinel Cathode on High-Temperature Storage Behavior of Lithium-Ion Pouch Cell

김대은,이일복,김재광,류지헌,손형빈,하경수,윤성훈 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.11

We investigate the effect of surface area of the lithium manganese spinel (LMO) cathode on the high-temperature storage performance of lithium-ion pouch cells. Using ~200 mAh design capacity, pouch cells were fabricated and their storage performance at high temperature was investigated according to changes in the LMO surface area. Cell performance and electrode analysis revealed that LMO with a large surface area exhibited a poor storage with a large decrease in capacitance and a more severe increase in resistance. This was mostly attributed to the change in surface morphology of anodes in each cell, indicative of the fast growth of a solid electrolyte interface film caused by high dissolution of Mn2+ ions in the high-surface-area LMO.

두피에 발생한 피지선암 2례

노상훈,정영진,홍인표,손형빈,정영진 대한성형외과학회 2009 Archives of Plastic Surgery Vol.36 No.3

Purpose: Sebaceous carcinoma is a rare malignant tumor derived from the adnexal epithelium of sebaceous glands. This tumor usually occurs on the eyelids, but uncommonly it may occur on the extraocular sites. It is characterized by a tendency of local recurrence and occasional metastasis. Surgical excision is appropriate treatment for patients with sebaceous carcinoma. While this kind of case is rare, we report two cases of sebaceous carcinoma developed on scalp. Methods: Case 1 was a 69-year-old woman. She visited the hospital with a 1.5×2.5cm sized reddish yellow-colored, slowly growing mass on the left parietal scalp. The mass began at birth and started growing 5 years ago. Case 2 was a 67-year-old woman. She had 2.5×3.0cm sized yellow-colored mass on the right parietal scalp. It occurred at birth and started growing 3 years ago. And the masses had erythematous ulcer with sanguineous discharge. In the beginning, the masses were miliary nodule. Results: CT scan and fine needle biopsy were done. Case 1 and 2 were diagnosed as sebaceous carcinoma. Wide excision with safety margin of 10mm and split thickness skin graft was done. Histological examination revealed well demarcated, irregular, variable sized tumor lobules. Each lobule was composed of sebaceous and undifferentiated cells. Postoperatively, the patients did well and the lesion did not recur. Conclusion: Sebaceous carcinoma is an aggressive malignant tumor. It is often confused with other skin tumors. Authors experienced two rare cases of sebaceous carcinoma developed on scalp. We recommend early wide excision with enough safety margin as treatment of sebaceous carcinoma.

Glucose Oxidation on Gold-modified Copper Electrode

임지은,안상현,표성규,손형빈,장종현,김수길 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.9

The activities of Au-modified Cu electrodes toward glucose oxidation are evaluated according to their fabrication conditions and physico-chemical properties. The Au-modified Cu electrodes are fabricated by the galvanic displacement of Au on a Cu substrate and the characteristics of the Au particles are controlled by adjusting the displacement time. From the glucose oxidation tests, it is found that the Au modified Cu has superior activity to the pure Au or Cu film, which is evidenced by the negative shift in the oxidation potential and enhanced current density during the electrochemical oxidation. Though the activity of the Au nanoparticles is a contributing factor, the enhanced activity of the Au-modified Cu electrode is due to the increased oxidation number of Cu through the electron transfer from Cu to more electronegative Au. The depletion of electron in Cu facilitates the oxidation of glucose. The stability of the Au-modified Cu electrode was also studied by chronoamperometry.