中华骨科杂志
中華骨科雜誌
중화골과잡지
CHINESE JOURNAL OF ORTHOPAEDICS
2001年
2期
107-110
,共4页
鲁世保%李之芳%王庆一%胥少汀%李放%姜金卫%李增洲
魯世保%李之芳%王慶一%胥少汀%李放%薑金衛%李增洲
로세보%리지방%왕경일%서소정%리방%강금위%리증주
假体和植入物%关节成形术,置换,膝%生物力学
假體和植入物%關節成形術,置換,膝%生物力學
가체화식입물%관절성형술,치환,슬%생물역학
目的比较新型单髁聚乙烯假体与临床常用假体的稳定性,为新型假体应用于临床提供试验依据。方法试验中使用三种类型的单髁胫骨聚乙烯假体:光滑型、“井”字型及“三柱”型。三种假体的上表面均为浅碟形,底面的结构各不相同:光滑型假体的底面光滑,无任何立体构型;“井”字型假体是临床使用的假体,其底面带有“井”字形分布的沟槽;“三柱”型假体是新型假体,其底面带有三个短柱,分别位于底面前、内、后三个平衡点。将18具人体胫骨标本随机分为三组,把三种假体牢固地安装在三组标本的内侧室。将标本安装在CSS-1101生物力学试验机上,受力点选在假体的前内侧,循环负荷,分别记录三种假体在循环第1、2、3、4、5、10、15、20、25、30次时,负荷为147N和981N的前、后微动。结果当负荷为147N时,“三柱”型假体的前、后微动与“井”字型假体的差异无显著性意义;但是,当负荷为981N时,“三柱”型假体的前、后微动显著低于“井”字型假体。结论新型“三柱”型假体的稳定性优于临床使用的“井”字型假体。本研究为新型假体应用于临床提供了试验依据。
目的比較新型單髁聚乙烯假體與臨床常用假體的穩定性,為新型假體應用于臨床提供試驗依據。方法試驗中使用三種類型的單髁脛骨聚乙烯假體:光滑型、“井”字型及“三柱”型。三種假體的上錶麵均為淺碟形,底麵的結構各不相同:光滑型假體的底麵光滑,無任何立體構型;“井”字型假體是臨床使用的假體,其底麵帶有“井”字形分佈的溝槽;“三柱”型假體是新型假體,其底麵帶有三箇短柱,分彆位于底麵前、內、後三箇平衡點。將18具人體脛骨標本隨機分為三組,把三種假體牢固地安裝在三組標本的內側室。將標本安裝在CSS-1101生物力學試驗機上,受力點選在假體的前內側,循環負荷,分彆記錄三種假體在循環第1、2、3、4、5、10、15、20、25、30次時,負荷為147N和981N的前、後微動。結果噹負荷為147N時,“三柱”型假體的前、後微動與“井”字型假體的差異無顯著性意義;但是,噹負荷為981N時,“三柱”型假體的前、後微動顯著低于“井”字型假體。結論新型“三柱”型假體的穩定性優于臨床使用的“井”字型假體。本研究為新型假體應用于臨床提供瞭試驗依據。
목적비교신형단과취을희가체여림상상용가체적은정성,위신형가체응용우림상제공시험의거。방법시험중사용삼충류형적단과경골취을희가체:광활형、“정”자형급“삼주”형。삼충가체적상표면균위천설형,저면적결구각불상동:광활형가체적저면광활,무임하입체구형;“정”자형가체시림상사용적가체,기저면대유“정”자형분포적구조;“삼주”형가체시신형가체,기저면대유삼개단주,분별위우저면전、내、후삼개평형점。장18구인체경골표본수궤분위삼조,파삼충가체뢰고지안장재삼조표본적내측실。장표본안장재CSS-1101생물역학시험궤상,수력점선재가체적전내측,순배부하,분별기록삼충가체재순배제1、2、3、4、5、10、15、20、25、30차시,부하위147N화981N적전、후미동。결과당부하위147N시,“삼주”형가체적전、후미동여“정”자형가체적차이무현저성의의;단시,당부하위981N시,“삼주”형가체적전、후미동현저저우“정”자형가체。결론신형“삼주”형가체적은정성우우림상사용적“정”자형가체。본연구위신형가체응용우림상제공료시험의거。
Objective To Compare the stability of a newly designed unicompartmental pure polyethylene prosthesis with the currently used ones. Methods Three kinds of unicondylar pure polyethylene prosthesis were investigated. The three kinds of prosthesis have the same shallow dish structure in the superior surface; however, the structures of the undersurface are different. The smooth typed prosthesis has a smooth undersurface, ‘ # ’ shape prosthesis has a under surface with grooves, which is used clinically at present, and the newly designed three peg prosthesis has three pegs anteriorly, posteriorly, and medially. Eighteen tibia specimens were divided into three groups randomly, all prostheses were cemented onto the medial compartment of the tibias. Each specimen was tested in a biomechanical machine(CSS- 1101). A 147 N and 981 N load was applied anteromedially. The anterior and posterior micromovements were measured for 1,2,3,4,5,10,15,20,25,30 cycles at the load of 147 N and 981 N. Results There was no significant difference between three peg prosthesis and ‘ # ’ shape prosthesis during anterior and posterior micromovements at a load of 147 N. But at a 981 N load , the micromovements of three peg prostheses were significantly lower than that of ‘ # ’ shape prosthesis. Conclusion The stability of the newly designed three peg prosthesis was better than that of ‘ # ’ shape prosthesis currently used clinically.