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수족부 연부조직 결손의 재건에 있어서 지방근막 피판술의 유용성
천남주,김철한,신호성,강상규,탁민성 대한성형외과학회 2007 Archives of Plastic Surgery Vol.34 No.6
Purpose: Various types of flaps, with their own advantages and disadvantages, have been described for reconstruction of soft tissue defect with exposure of tendons, bones, or joints in the hand or foot. Local flaps with random vascularity have a limitation by their length. Free flaps are time-consuming procedure that may require the sacrifice of some major vessels. The ideal flap for covering soft tissue defects of the hand or foot must provide subcutaneous tissue that tendons can glide through which, supply enough subcutaneous tissue for cover of vital neural, bony, vascular and joint structures, and it has to be aesthetically pleasing. The adipofascial flap fulfills these criteria. It allows immediate or early closure of difficult wound of hand and foot in an easy way, and is especially indicated for small to medium-sized defects.Methods: From October 2005 to December 2006, seven cases underwent this procedure to reconstruct soft tissue defect on hand or foot. Results: All flaps survived completely, and no complications were observed.Conclusion: The adipofascial flap is a convenient flap for coverage of soft tissue with exposure of vital structure in the hand or foot, and provide several advantages, as following; easy and safe, short operating time, one stage procedure, thinness and good pliability of the flap, preservation of the major vascular pedicles, skin preservation at the donor site, thus preserve the shape of the limb and minimize donor site scar.
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척골관에서 척골동맥의 주행 이상에 의한 척골신경의 압박
천남주,김철한,강상규,탁민성 대한성형외과학회 2009 Archives of Plastic Surgery Vol.36 No.1
Purpose: Compression of the ulnar nerve in the ulnar tunnel is a relatively uncommon condition. Many authors have described several etiologies of ulnar nerve compression. We experienced two cases of ulnar nerve compression in the ulnar tunnel due to an anomalous pulsatile S-shaped ulnar artery. Methods: Case 1: A 51-year-old man was referred with numbness and paroxysmal tingling sensation along the volar side of the ring and little fingers of his right hand for 6 months. When exploration, the ulnar artery was pulsatile S-shaped and was impinging on the ulnar nerve. To decompress the ulnar nerve, the tortuous ulnar artery was mobilized and translocated radially onto the adjacent fibrous tissue. Case 2: A 41-year-old man was referred with tingling sensation on the 4th, 5th finger of the right hand for 4 months. Sensory nerve conduction velocities of the ulnar nerve was delayed. Preoperative 3D angio CT scan showed an anomalous S-shaped ulnar artery. Same operation was done. Results: The postoperative course was uneventful. After decompression, paroxysmal tingling sensation decreased to less than 1 minute per episode, occurring 1 or 2 times a day. After 4 months, they had no more episodes of numbness and tingling sensation. Examination demonstrated good sensation to pinprick and touch on the ulnar aspect of the hand. Conclusion: We report two cases of ulnar nerve compressive neuropathy that was caused by an anomalous pulsatile S-shaped ulnar artery in the ulnar tunnel. Although this is an unusual cause of ulnar nerve compression, the symptoms will not spontaneously resolve. The prompt relief of compressive neuropathic symptoms following the translocation of the impinging ulnar artery from the affected ulnar nerve onto adjacent tissue proved that the ulnar nerve compression is due to the anomalous vessel.
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소아의 전두동에 발생한 복잡골절에서 Cyanoacrylate의 유용성
이용석,강상규,천남주,김철한,탁민성 대한성형외과학회 2011 Archives of Plastic Surgery Vol.38 No.1
Purpose: In treatment of facial bone fracture, occurred in children, we generally use wires, miniplate, absorbable plate or combination. These foreign bodies can be palpable, cause of infection and need reoperation for removing. And when bone fragments are multiple, small and thin, it is hard to handle and make accurate reduction of all fragments. In these case, a biodegradable tissue adhesive, Histoacryl^Ⓡ(n - butyl - 2 - cyanoacrylate), can be used as fixation technique for small, multiple, and thin fracture fragments. Methods: 3 years old and 6 years old children, who has comminuted fracture on frontal sinus, we used Histoacryl^Ⓡ for fixation of multiple bone fragments. After approaching by coronal incision, we pulled out all bone fragments and reconstructed bone fragments by Histoacryl^Ⓡ and fixed those on frontal sinus by absorbable plates. Results: Photographs and 3 - dimensional CT obtained preoperative and postoperative. And we compared them each other about accuracy of reconstructed bony contour. We can reconstruct almost all bone fragments easily along 3 - dimensional structure and get excellent aesthetic result. There was no complication such as infection. Conclusion: In treatment of comminuted facial bone fracture, occurred in children, Histoacryl^Ⓡ is excellent method for accurate reconstruction in small and thin bone fragments, which cannot be fixed by wire, miniplate or absorbable plate without complication
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Russel J. Galanido,Leah Jessica Sebastian,Daniel Owusu Asante,김동선,천남주,조정호 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.4
The hydrogen fuel filling time for hydrogen-powered fuel cell electric vehicles at different initial conditionswas estimated through dynamic simulation by using Aspen Dynamics v.11 with Peng-Robinson as the thermodynamicmodel. The simulation process was divided into three parts, in which the different storage vessels (LP, MP, andHP banks) act as the sole hydrogen source. The SAE J2601 standard was used as the basis for the fueling operation. Forthe fast filling of the car tank with hydrogen gas, a detailed heat transfer modeling suited for the process was elaboratedto correctly predict the in-cylinder temperature throughout the fueling operation. During the dynamic simulation,the station pressure, the state-of-charge %, the car tank temperature, the hydrogen flow rate, the amount ofhydrogen gas accumulated in the car tank, and the high-pressure storage vessels’ conditions were monitored and confirmedaccording to their expected values or limits. It is determined that the fueling times calculated in the dynamicstudy were faster than their corresponding estimated values for all cases, indicating the integrity of the process.
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