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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
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대한의용생체공학회 의공학회지 의공학회지 제31권 제1호
발행연도
2010.1
수록면
56 - 66 (11page)

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The various total replacement artificial discs have developed because spinal fusion has shown a lesser mobility of an operated segment and an accelerated degeneration at adjacent discs. But almost artificial discs have not yet been reached on the substitute surgery of fusion because many problems such as those clinical success rates were not more than them of fusion have not solved. In this paper, vertically inserted assemble-screw fixture in vertebrae was proposed to improve the fixed capability of artificial disc. And also, to evaluate the design suitability of newly designed screw-type, including fixtures of commercial discs such as wedge and plate type, the 1/4 finite element model with a vertebra and various implanted fixtures were generated, and next, 3 bending motions such as flexion, bending and twisting under the moment of 10Nm and compression under the force of 1000N were considered, respectively and finally, FE analyses were performed. Results of three fixture types were compared, such as Range of Motion and maximal stress, and so on. For ROM, the screw type was average 58% less than the wedge type and was average 42% less than the plate type under all loading conditions. For average stress ratio at closer nodes between vertebra and each fixture, the wedge type was the lowest as minimum 0.02 in twisting, screw types were the highest as maximum 0.28 in compression. As the results of using cement material, it was predicted that the instability problem of the wedge type was better solved. The screw type which could be increased by implanting depth according to the number of assembling mid screws, showed that the decreased tendency of ROMs and maximal cancellous bone stresses. In further study, controlling the number of assembling screws that was suitable for a patient’s bone quality, development of surgical tools and keeping on design supplementations, which will be able to develop the competitive artificial disc.
#Fixture Design #Assembling screws #Artificial disc #Finite Element Model #P version

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참고문헌 (14)

참고문헌 신청
Andrew, P.D / 2001 / Experimental and theological investigation into the effects of artificial disc implantation on the lumbar spine / 박사 / Univ. of Iowa google schola Bertagnoli, R / 2005 / The treatment of disabling single-level lumbar discogenic low back pain with total disc arthroplasty utilizing the Prodisc prosthesis:a prospective st google schola Bertagnoli, R / 2006 / Treatment of symptomatic adjacent-segment degeneration after lumbar fusion with total disc arthroplasty by using the prodisc prosthesis:a prospective s google schola Bushelow, M. / 2007 / Comparison of wear rates:metal/UHMWPE and metal on metal total disc arthroplasty / in Proceedings of the NASS 22nd annual meeing : S31 ~ S32 google schola Chung, S.S / 2006 / Lumbar total disc replacement using ProDisc II:a prospective study with a 2-year minimum follow-up / J Spinal Disord Tech 19 (6) : 411 ~ 415 google schola

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