원위 요골 골절의 외고정술

권봉철 대한수부외과학회 2015 대한수부외과학회지 Vol.20 No.2

External fixation with or without ancillary K-wire fixation, once being one of the most popular methods of surgery for unstable distal radius fractures, is now losing its position due to a recent surge in the use of volar locking plates. However, these changes are not firmly grounded on scientific evidence. Recent clinical trials showed that a similar wrist function was achieved when the use of external fixation was compared with that of volar locking plates at 1 year after surgery for the treatment of unstable distal radius fractures, even though the rate of functional recovery was slower in the former. In addition, it is still a question whether additional costs and time paid for volar locking plates can be justified by such a small gain in wrist function. We will review recent studies comparing external fixation with volar locking plates regarding wrist function and costs, and discuss current indication of external fixation for unstable distal radius fractures. 외고정 장치는 원위 요골 골절의 수술적 치료에서 한때 가장 널리 쓰이는 방법 중 하나였지만, 최근 전방 각고정 잠김 나사 금속판의 사용이 급증함에 따라 점차 설 자리를 잃고 있다. 하지만 이런 변화는 강력한 과학적인 근거에 기반을 둔 것이 아니다. 최근 보고된 전향적 비교 연구들에 의하면 외고정 장치를 쓴 경우와 전방 각 고정 잠김 나사 금속판을 쓴 경우를 비교했을 때 손목 기능은, 비록 전자의 경우가 더 느리게 회복되긴 하지만, 수술 후 1년째 임상적으로 의미 있는 차이를 보이지 않는다. 또한 전방 각 고정 잠김 나사 금속판을 사용함으로써 추가적으로 소요되는 비용과 시간이 과연 정당화될 수 있는지에 대한 의문도 여전하다. 이 종설에서는 원위 요골 골절의 치료에 있어서 외고정 장치와 전방 각 고정 잠김나사 금속판을 손목 기능 회복과 비용면에서 비교해보고 외고정 장치의 적응증에 대해 논의할 것이다.

메소아메리카의 시・공간 융합 개념: 나와틀 전통의 내재적 이원론과 우주론적 4분법 모델을 중심으로

권봉철 한국라틴아메리카학회 2023 라틴아메리카연구 Vol.36 No.3

The concept of spacetime, which forms a core part of the cosmological worldview in the Mesoamerican civilization, is analyzed through the immanent dualism and the cosmological tetralogy model of the Nahuatl tradition. The knowledge accumulated through years of observation of nature, especially celestial observations centered on the sun, led to the formation of three distinctive calendar systems (Cempohuallapohualli, Tonalpohualli and Xiuhpohualli). This perception of space centered on the four cardinal directions and the unique concept of spacetime convergence using a vigesimal system served as the ideal cognitive model for the Mesoamerican tradition. The constant cycle of immanent dualism and the cosmological tetralogy system formed the prototypical model of Mesoamerican culture. This cultural element common to all of Mesoamerica has found concrete examples in the Postclassic Nahuatl tradition, as well as a wealth of Classical Nahuatl sources.

유한 요소법을 이용한 유연차체-현가 시스템의 동특성 및 주행진동해석

권봉철,최영휴 산업기술연구소 1997 産技硏論文集 Vol.11 No.-

척골신경병증

권봉철 대한의사협회 2017 대한의사협회지 Vol.60 No.12

Cubital tunnel syndrome is the second most common compressive neuropathy. Its diagnosis is largely based on clinical findings. It has been well known that patients with mild to moderate grade of cubital tunnel syndrome have a high chance of spontaneous resolution, while those with severe degree do not. Thus, the former is treated with conservative methods initially, and the latter is indicated for surgical intervention. There are three types of surgical techniques for cubital tunnel syndrome. Of these, in-situ decompression technique has been gaining popularity as it is simpler and shows similar efficacy with less complications compared to other techniques. In this review, we deal with current concepts of the cubital tunnel syndrome pertaining to the primary clinical practice.

Morphometric Variations in the Volar Aspect of the Distal Radius

권봉철,이준규,이석윤,황재연,서장현 대한정형외과학회 2018 Clinics in Orthopedic Surgery Vol.10 No.4

Background: Significant discrepancy exists between anatomical plate designs and the anatomy of the native distal radius, which may be attributable to considerable morphometric variations in the volar aspect of the distal radius. We aimed to evaluate the degree of variability in the morphometry of the distal radius and identify factors associated with this variability. Methods: We measured the volar surface angle (VSA) of the intermediate and lateral columns and the volar surface width (VSW) in the distal radius from three-dimensional computed tomography scans acquired from 81 cadaveric forearms. These morphometric parameters were compared between the lateral and intermediate columns, between males and females, and between Koreans and Caucasians. Caucasian morphometric data were obtained and pooled from the previous studies. The coefficient of variation was used to assess the variability of the parameters and Cohen’s d to estimate the effect size of the difference between groups. Results: The average VSA of the lateral column was 22° ± 6°, and that of the intermediate column was 29° ± 8° in Koreans (p < 0.001). The variability was high for both VSAs. The VSA of the intermediate column was significantly larger in males than in females (p < 0.001) and in Caucasians than in Koreans (p < 0.001). The average VSW of distal radius was 30 ± 3 mm at the watershed line, and it became narrower proximally. The VSW was significantly larger in males than in females (p < 0.001) and in Koreans than in Caucasians (p < 0.001). The effect sizes of the difference for the VSA and VSW between sexes, races and columns were medium to large. Conclusions: Considerable variability exists in the morphometry of the volar distal radius, with sex, race, and column as contributing factors. These results suggest that surgeons should carefully choose an anatomical volar locking plate with appropriate angulation characteristics for each patient to achieve patient-specific alignment of the distal radius.

아스테카 제국의 수도, 멕시코-테노츠티틀란: 그 모범적 역사(Exemplary history)의 의미와 상징

권봉철 한국외국어대학교 중남미연구소 2024 중남미연구 Vol.43 No.1

The perception of history can vary according to time and place. With the establishment of modern historiography, history has drawn a clear line between history and myth. Tradition is seen as something that has existed since time immemorial, emphasizing its origins and roots. When we speak of a historical community to designate a group with a common memory, the historical facts themselves are of course important, but so is the genealogical work of preserving and maintaining memory and tracing the mechanisms of its creation. In the postmodern era, it is not uncommon to understand history as a text. When approaching the history of Aztec civilization, it is worth recalling the “creation of tradition” to which modern historiography refers. The shared memory formed by following an idealized model is no different from the axio-ontological life of traditional societies based on mythological models. This way of understanding history with an axio-antological sense of existence based on prototypes can be called exemplary history. This study explores the meaning and symbolism of exemplary history in Mexico-Tenochtitlan, the city-state (altepetl) at the heart of the Aztec empire, in the context of understanding episteme in the ancient Nahuatl tradition. The ancient Mexicans had their own sense of history through their own concept of history (tlahtolllotl, ihtoloca). The exemplary history of Mexico-Tenochtitlan, capital of the Aztec empire, a confederation of city-states, is studied in the context of their internal logic. By embracing the mode of existence expressed by the Nahuatl tradition from a pluralist perspective and revealing its own logic, we reconsider the gap between the Aztecs' perception of history and their interpretation of their historical records. 역사의식은 시대와 지역에 따라 상이할 수 있다. 근대 역사학이 정립되면서 역사는 신화와 분명한 선을 긋게 되었다. 전통은 유사 이래 그렇게 존재했던 것처럼 여겨진다. 그 기원과 뿌리를 강조하며 유구한 역사를 강조해 오고 있다. 공통의 기억을 간직한 집단을 역사 공동체라고 할 때, 역사적 사실이라는 그 자체도 물론 중요하겠지만 기억을 간직하고 유지하는 일, 나아가 그 기억 생성의 메커니즘을 되짚어 보는 계보학적 작업도 중요할 것이다. 포스트모던 시대를 맞이하며 역사 또한 하나의 텍스트로 이해하는 것이 낯설지 않다. 아스테카 문명의 역사를 논할 때 현대 역사학에서 언급되는 “전통의 창조”를 상기해 볼 필요가 있다. 이상화된 모델을 좇아 형성된 공통의 기억은 신화 모델 기반의 전통 사회가 지니던 가치-존재론적(axio-ontological) 삶과 다르지 않다. 프로토타입을 기준으로 한 당위론적 존재 의식을 지니고 역사를 이해하는 방식을 모범적 역사라고 할 수 있다. 본 연구에서는 고대 나와틀 전통의 에피스테메 이해라는 차원에서 아스테카 제국의 심장부 도시-국가(altepetl)였던 멕시코-테노츠티틀란이 지니는 모범적 역사의 의미와 상징을 탐구한다. 고대의 멕시코인들은 고유한 역사 개념 (tlahtolllotl, ihtoloca)을 통해 자신들의 역사의식을 지니고 있었다. 여러 도시 국가 연합체가 이루었던 아스테카 제국의 수도, 멕시코-테노츠티틀란이 내포하고 있던 모범적 역사를 그들의 내적인 논리라는 맥락에서 연구한다. 나와틀 전통에서 표현된 존재양식(mode of existence)을 다원주의적 관점에서 수용하고 그 자체에 내재하는 논리를 드러냄으로써 아스테카 문명의 역사 인식과 그들의 역사 기록에 대한 해석 사이의 간극을 재고해 본다.

유한요소법을 이용한 유연차체-현가 시스템이 동특성 및 주행진동해석

최영휴,권봉철 國立 昌原大學校 産業技術硏究所 1997 産技硏論文集 Vol.11 No.-

In this paper, the dynamic characteristics and transient vibration of the semi-trailer with the air suspension and air kingpin were analyzed by using the finite element method. The same analyses were carried out to understand the dynamic characteristics of the same semi-trailer but with the mechanical suspension and pivot kingpin. The comparison of both results shows that the air suspension and air kingpin can significantly reduce vibration in the semi-trailer. Key words : Semi-trailer, Dynamic characteristics, Transient vibration, Air suspension, Air kingpin, FEM.

종골 골절의 나사못 고정 후 발생한 내측 족저 신경 손상

권봉철 ( Bong Cheol Kwon ),신용운 ( Yong Woon Shin ),권덕주 ( Duck Joo Kwon ),이남규 ( Nam Kyou Rhee ) 대한골절학회 2006 대한골절학회지 Vol.19 No.2

We present a case of medial plantar nerve injury by screw tip after open reduction and internal fixation of intraarticular calcaneus fracture. We reviewed the risk and prevention technique of medial plantar nerve injury in fixing the calcaneus fracture.

절단된 반대측 수부의 재활용 피판을 이용한 전완부 절단단과 주관절의 기능재건 - 증례 보고 -

최수중,권봉철,정규학,Choi, Soo-Joong,Kwon, Bong-Cheol,Jung, Kyu-Hak 대한미세수술학회 2007 Archives of reconstructive microsurgery Vol.16 No.2

Free vascularized tissue transfer to preserve upper extremity amputation level is uncommon but very useful procedure. To cover the below-elbow amputee stump and restore the function of the elbow, we have used a free flap as a spare part concept from the contralateral hand which was so severely damaged that amputation was inevitable.

변형 전방 접근법에 의한 중수 수지 관절 후방 복잡 탈구의 치료

최수중,권봉철,이용범,신원형 대한수부외과학회 2011 대한수부외과학회지 Vol.16 No.3

Purpose: To describe the surgical treatment of the complex dorsal metacarpophalangeal dislocations and its results,emphasizing on the modified volar approach with A1 pulley release. Materials and Methods: We experienced 6 cases of dorsal dislocation of the metacarpophalangeal joint. We performed open reduction with the modified volar approach described by Eaton and Dray. Postoperatively posteroanterior and lateral radiographs of the index finger metacarpophalangeal joint and metacarpophalangeal joint range of motion was followed. Results: One case with a large osteochondral fracture was operated with volar and doral approach both. Overall end results were good without any significant restriction of motion and stability of the fingers. Conclusion: Modified volar approach with A1 pulley release is an excellent method for complex dorsal metacarpophalangeal dislocations without osteochondral fracture. 목적: 수부 중수 수지 관절의 후방 복잡 탈구에 대한 변형 전방 접근법에 의한 관혈적 정복술의 우수성을 알아보고 그 결과를 기술하고자 하였다. 대상 및 방법: 총 6예의 수부 중수 수지 관절의 탈구 환자를 대상으로 Eaton과 Dray의 변형 전방 접근법에 의한 관혈적 정복을 시행하였다. 술 후 추시에서 단순방사선촬영상 전 후면 및 측면에서 관절면의 정복 여부 및 능동적 관절 운동 범위를 측정하였다. 결과: 전방 접근법만으로는 정복이 불가능하여 후방 접근법을 동시에 사용한 1예를포함한, 6예 모두 방사선 소견상 관절면의 일치 및 관절 운동 범위는 정상으로 회복되었으며, 특별한 합병증 없이 회복되었다. 결론: 관절 내 골절이 없는 수부 중수 수지 관절의 후방 탈구에서 변형 전방 접근법에의한 관혈적 정복은 안전하고 쉬우며 만족할 만한 결과를 얻을 수 있는 방법이다.