만성 비골건 재발성 탈구에서 원위 비골 회전 성형술: 술기 보고

서재완,박현우,Suh, Jae Wan,Park, Hyun-Woo 대한족부족관절학회 2020 대한족부족관절학회지 Vol.24 No.4

Chronic recurrent peroneal dislocation often responds poorly to conservative treatment. Surgical treatment has been reported to be more effective than conservative treatment, and various surgical treatment methods are available: superior peroneal retinaculum repair or reattachment, peroneal groove deepening procedures, rerouting procedures, or bone block procedures. Although various treatment options have been reported, there is no consensus regarding which treatment is better. This paper proposes a distal fibular rotational plasty that can prevent recurrent peroneal dislocations and recover its function well by securing a stable peroneal tendon excursion space.

요족의 진단과 치료

서재완,최우진,이진우,Suh, Jae Wan,Choi, Woo Jin,Lee, Jin Woo 대한족부족관절학회 2016 대한족부족관절학회지 Vol.20 No.2

The cavus foot is a deformity characterized by an elevated medial longitudinal arch and a hindfoot varus with plantarflexed 1st ray. The etiology of cavus foot is usually related to neuromuscular disease or idiopathic cause. Thorough clinical and radiographic evaluation is required for differentiating etiology of the cavus. Most cases of cavus foot are stable and slowly progressive deformities which can initially be managed with conservative treatment including orthoses and physical therapies. Determining whether the deformity is flexible or rigid, the apex of the deformity and any muscle imbalances in foot and ankle is important for achievement of an adequately balanced plantigrade foot. Treatment should include systematic preoperative planning for selection of appropriate procedures for maintaining a functional and flexible foot with combinations of soft-tissue release, osteotomy, tendon transfer, and arthrodesis.

최적 충전제어 소규모 에너지저장장치 배전 적용에 따른 에너지 비용 연구

서재완(Jae-wan Suh),이재형(Jae-Hyeong Lee),박세준(Se-Jun Park),장길수(Gilsoo Jang) 대한전기학회 2012 대한전기학회 학술대회 논문집 Vol.2012 No.5

Distributed Generation(DG) and Energy Storage System(ESS) have received increasing interest in the power system. This paper shows total energy cost difference between distribution system without ESS and with ESS. Total energy cost is calculated by MATLAB. And it consider variation of SMP and DG power output. The battery charging schedule is obtained by using optimization method.

대퇴 골절의 골수정 후 생긴 지연성 가성 동맥류

오현철(Hyun Cheol Oh),서재완(Jae Wan Suh),곽대경(Dae Kyung Kwak),윤한국(Han Kook Yoon) 대한정형외과학회 2013 대한정형외과학회지 Vol.48 No.3

대퇴 간부 골절에서 골수강 내 금속정 삽입술은 널리 사용되는 방법으로 교합나사의 삽입은 경피하에 삽입하며 특히 원위부는 가이드 없이 삽입하게 된다. 교합나사에 의한 혈관에 대한 합병증은 드물게 생기며 원위부 교합나사에 의해 발생한 지연성 가성 동맥류(delayed pseudoaneurysm)에 대해서는 아직 국내에서 보고된 바가 없었다. 이에 저자들은 지연성 가성 동맥류 2예를 경험하여 문헌고찰과 함께 보고하는 바이다. Interlocked intramedullary nailing is widely accepted for treatment of closed femoral shaft fractures. An interlocking screw is inserted percutaneously, and especially the distal screw is inserted without use of a guide. Vascular complications associated with an interlocking screw in intramedullary nailing are rare. No case of delayed pseudoaneurysm caused by a distal interlocking screw has yet been reported in Korea. We present two cases of delayed pseudoaneurysm caused by a distal interlocking screw several months after intramedullary nailing.

분산전원을 포함하는 시스템 운용 플랫폼을 위한 송배전 통합 해석 하이브리드 알고리즘 개발

송종석(Chong-Suk Song),서재완(Jae-Wan Suh),장문종(Moon-Jong Jang),장길수(Gil-Soo Jang) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.1

Owing to the increase in the penetration of distributed generation the DGs connected to the distribution system have an effect on the system conditions of the transmission system and neighboring distribution systems. This makes the separate analysis of the transmission and distribution system no longer valid and requires the consideration of both the system in the analysis process. This paper proposes a transmission/distribution integrated analysis hybrid algorithm that would ensure the accurate analysis of the system by reflecting the results of the transmission and distribution system analysis on each other. Different scenarios are being analysed in order to verify the effectiveness of the hybrid algorithm by observing the effects of the DG connected distribution system on the transmission system and neighboring distribution systems. The algorithm and simulations performed are being conducted by MATLAB and the IEEE 30 bus system and a test distribution system has been utilized for the transmission and distribution systems respectively.

족관절 양과 유사 골절에서 삼각인대 보강술과 경비인대 결합 나사 고정술의 임상적 결과 비교

양종헌(Jong Heon Yang),윤성현(Sung Hyun Yoon),서재완(Jae Wan Suh),최성준(Sung Joon Choi),박현우(Hyun-Woo Park) 대한정형외과학회 2024 대한정형외과학회지 Vol.59 No.1

목적: 족관절 양과 유사 골절에서 비골 골절에 대한 정복 및 내고정술을 시행한 후 불안정성을 평가하여 경비원위결합을 고정하는것은 잘 알려진 치료법이다. 그러나 내측 삼각인대를 보강하는 술식에는 그 필요성과 효과에 대해 여전히 논란이 있다. 본 연구에서는 양과 유사 골절에서 외과 골절에 대한 고정 이후 삼각인대 보강술을 시행한 환자군과 경비인대 결합 나사 고정을 시행한 환자군 간의 치료 결과를 비교 분석하고자 한다. 대상 및 방법: 2007년부터 2022년까지 양과 유사 골절로 수술을 시행한 환자들 중 외과 골절에 대한 고정을 포함하여 삼각인대를 보강한 31명의 환자군과 경비인대 결합 고정술을 시행한 12명의 환자들을 후향적으로 비교하여 연구를 시행하였다. 술 후 12개월째 시각통증척도(visual analogue scale, VAS) score, American Orthopaedic Foot and Ankle Society (AOFAS) score, 족관절 가동 범위를 측정하여 임상적인 결과를 비교하였으며, 수술 전 후 내측간격(medial clear space), 경비겹침(tibiofibular overlap), 경비간격(tibio-fibular clear space)을 측정하여 방사선학적 결과를 비교하였다. 또한 술 후 합병증 발생 유무를 조사하여 비교하였다. 결과: 술 후 AOFAS score와 시각통증척도 score 및 술 후 가동 범위를 비교한 결과 두 군 간의 유의한 차이는 없었다. 방사선학적 결과상 수술 전 후 내측간격, 경비겹침, 경비간격은 두 군 간에 유의한 차이를 보이지 않았다. 또한 삼각인대 보강술을 시행한 군에서 술 후 합병증은 발생하지 않았으며, 경비인대 결합 나사 고정을 시행한 환자군에서는 각각 1건의 나사 파손과 천부 감염이 관찰되었다. 결론: 양과 유사 골절에서 외과 골절 고정 후 삼각인대 보강술만 단독으로 시행하더라도 임상적으로 좋은 결과를 얻을 수 있었다. 또한 경비인대 결합 고정술을 시행하는 것보다 삼각인대 보강술만 단독으로 시행하게 되면 부정 정렬의 가능성이 거의 없고, 금속나사의 파손이나 금속 나사의 제거를 위한 추가 수술이 필요하지 않은 장점이 있어, 삼각인대 보강술은 양과 유사 골절의 수술적 치료 시 좋은 치료 술식이 될 수 있을 것으로 생각된다. Purpose: The current treatment option of bimalleolar equivalent fractures is open reduction and internal fixation of lateral malleolus followed by syndesmotic screw fixation of syndesmosis or deltoid ligament augmentation. On the other hand, there is still debate using deltoid ligament augmentation technique. This study compared the clinical results of deltoid ligament augmentation and syndesmosis screw fixation in bimalleolar equivalent fractures. Materials and Methods: From 2007 to 2022, this study retrospectively compared 31 patients who underwent deltoid ligament augmentation with fibula fixation with 12 patients who underwent syndesmosis fixation for bimalleolar equivalent fractures. The clinical results were compared by measuring visual analogue scale (VAS) score, American Orthopaedic Foot and Ankle Society (AOFAS) score, and ankle range of motion 12 months after surgery. The radiological results were compared by measuring medial clear space, tibiofibular overlap, and tibiofibular clear space before and after surgery. The postoperative complications were compared. Results: The post-operative AOFAS score, the VAS score, and the ankle range of motion were similar in the two groups. The radiological results showed a similar medial clear space, tibiofibular overlap, and tibiofibular clear space in the two groups before and after surgery. In addition, there were no postoperative complications in the group that underwent deltoid ligament augmentation, and one screw break and superficial infection were observed in each of the patient groups that had undergone trans-syndesmosis screw fixation. Conclusion: Clinically good results could be obtained despite only deltoid ligament augmentation being performed alone after fibular fracture fixation in bimalleolar equivalent fractures. In addition, if only deltoid ligament augmentation is performed alone rather than transsyndesmosis screw fixation, there is little possibility of misalignment and no risk of screw breakage or the need for additional procedures to remove the screws. In conclusion, deltoid ligament repair without syndesmosis screw fixation could be viable for treating bimalleolar equivalent fractures.