• 폴리머
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• 제29권4호
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• pp.350-356
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• 2005

아크릴계 골시멘트의 기계적 물성을 향상시키고 중합열을 낮추기 위하여 폴리(메틸 메타크릴레이트)/몬모릴로나이트 나노복합체를 골시멘트에 도입하는 연구를 행하였다. 나노복합체는 현탁중합으로 합성하였고 이의 특성을 주사전자 현미경, X-선 회절분석기, 투과전자현미경, 젤 투과 크로마토그래피, 입도분석기, 에너지 분산 분광기로 확인하였다. 폴리(메틸 메타크릴레이트)/몬모릴로나이트 나노복합체를 도입한 골시멘트를 제조하고, 이의 발열특성, 인장 및 압축특성을 조사하였다. 합성된 입자는 몬모릴로나이트 층들이 부분적으로 박리되고 고분자가 삽입된 나노복합체였고, 직경이 약 $50\~60$um인 구형이었다. 골시멘트의 경화온도는 $98^{circ}C$에서 $81\~87^{circ}C$로 감소하였으며, 골시멘트의 기계적 특성을 측정해 본 결과 0.1$wt\%$몬모릴로나이트를 함유하고 있는 골시멘트의 기계적 강도는 증가하였으나, 그 이상에서는 대체로 감소하는 경향을 보였다. 이는 현탁중합 과정에 생성된 나노복합체 내의 기포에 기인하는 것으로 사료된다.

• 대한골관절종양학회지
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• 제1권2호
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• pp.145-153
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• 1995

Giant cell tumor is most frequently found in juxtaarticular region, and difficult to treat because of local recurrence. Although primary resections reduce recurrence, the joint function will be markedly impaired. Techniques involving physical adjuncts(high speed burr and electric cauterization), acrylic cement or en bloc resection with VFG(vascularized fibular graft) have been employed to reduce local recurrence. From October 1984 to April 1994, twenty-nine patients diagnosed as giant cell tumor were treated at department of Orthopaedic Surgery, School of Medicine, Kyung Hee University. There were eleven men and 18 women, ranging in age from 17 to 52 years(mean: 34 years). The average follow-up period was four years and five months. The location of the lesion was around the knee in 15, distal radius in three, femoral head in three, and others in eight patients. Fifteen patients around the knee joint were treated with several modalities; curettage with bone graft in five, curettage with cement filling in three, curettage with bone graft and physical adjuncts in five, en bloc resection with VFG in one and en bloc resection with arthroplasty in one patient. The functional results, according to the Marshall's knee score, were excellent in one, good in two, and fair in two after the curettage with bone graft, good in three after the curettage with bone cement filling, excellent in one, good in four after the curettage with bone graft and physical adjuncts, and good in two after the en bloc resection with VFG or arthroplasty. Three patients had local recurrence among 15 patients with giant cell tumor around knee. Vascularized fibular graft around wrist joint provided good functional restoration without local recurrence in all three patients who had giant cell tumor in distal radius. Although there is no statistical significance, it seems that curettage with bone graft using physical adjuncts or acrylic cement reveals better results than simple curettage with bone graft. Excellent functional result were obtained without local recurrence by using vascularized fibular graft after en bloc resection.

• 한국임상수의학회지
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• 제26권4호
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• pp.359-361
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• 2009

체중 25.2 kg 2년령 암컷 알라스카 말라뮤트 개가 교통사고 후 한강 동물병원에 내원하였다. 신체 검사에서 심한 유연과 견치 탈구를 보였으며 방사선 사진에서 앞쪽 하악골 골절이 관찰 되었다. 와이어링과 polymethyl methacrylate을 이용한 외고정을 실시하였다. 수술 7주 후 방사선 사진 검사에서 잘 발달 된 가골 형성이 골절 부위 피질에서 관찰 되었다. 수술 7주 후 핀이 제거 되었으며 정상적인 저작 운동을 관찰 할 수 있었다.

• 한국임상수의학회지
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• 제39권4호
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• pp.185-191
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• 2022

An Amur softshell turtle with multiple shell injuries was admitted to the Seoul Wildlife Center on 19 May 2021. The most severe lesion was a puncture wound requiring urgent closure. In addition to routine supportive therapy, the damaged shell was patched with biocompatible polymethyl methacrylate (PMMA) materials (bone cement and dental acrylic) and fiberglass. Despite a few methods to repair the carapace or plastron of hard-shelled turtles, shell repair in the Amur softshell turtle has rarely been reported. This paper reports the repair process of a puncture wound in the carapace of a softshell turtle using polymethyl methacrylate (PMMA). PMMA is a biocompatible acrylic polymer that forms a tight structure that holds the implant against tissue defects, such as skin, bones, and dentures. Fiberglass, a preferred fiber in various medical fields, was used with PMMA to provide extra strength and waterproof capability. After the procedure, there were no signs of edema, inflammation, bleeding, skin discoloration, or any other complications. Accordingly, this can be a method of choice in softshell turtles using biocompatible materials to cover the lesion in the carapace and provide appropriate wound management, supportive therapy, and a suitable course of antibiotics considering all other circumstances.