北京生物醫(yī)學(xué)工程

計(jì)算機(jī)模擬分析基于X線片定制股骨柄假體的可行性_________

Computer simulation analysis for the feasibility of designing custom hip stem prostheses based on X-ray film

作者：馬如宇韋建和丁華陳敏

單位：           江蘇大學(xué)機(jī)械工程學(xué)院 (江蘇鎮(zhèn)江212013)    

關(guān)鍵詞： X線片；定制型；股骨柄假體；模擬

分類(lèi)號(hào)：

出版年·卷·期（頁(yè)碼）：2013·32·1（43-46）

摘要：

目的探討基于X線片設(shè)計(jì)定制型髖關(guān)節(jié)股骨柄假體的可行性，以解決臨床上因CT圖像模糊無(wú)法設(shè)計(jì)定制型髖關(guān)節(jié)股骨柄假體問(wèn)題，并降低假體設(shè)計(jì)成本。方法首先根據(jù)10根股骨的X線片，設(shè)計(jì)股骨柄假體。然后將設(shè)計(jì)出的這些股骨柄假體實(shí)體模型模擬植入從相應(yīng)股骨CT圖像中提取出的股骨腔線框模型中，并分析了這些股骨柄假體與股骨腔的干涉與匹配情況。最后根據(jù)一例需行髖關(guān)節(jié)置換手術(shù)的患者股骨X線片，為該患者定制了股骨柄假體，在臨床上將這一假體植入患者股骨腔內(nèi)。結(jié)果模擬與臨床驗(yàn)證結(jié)果證實(shí)這些股骨柄假體不僅能夠植入相應(yīng)的股骨腔，而且與相應(yīng)的股骨腔匹配較好。結(jié)論利用X線片為患者設(shè)計(jì)定制型髖關(guān)節(jié)股骨柄假體是可行的，且設(shè)計(jì)的股骨柄假體能夠較好地與股骨腔匹配，同時(shí)驗(yàn)證了作者自編的軟件可用于定制型髖關(guān)節(jié)股骨柄假體的設(shè)計(jì)。

Objective To investigate the feasibility of designing custom hip stem prostheses based on X-ray films.To solve the problem of custom hip stem prostheses can not be designed based on blurred CT images,and reduce the design costs.Methods First,hip stem prostheses for ten femurs were designed according to their X-ray films.Then,these hip stem prosthesis models were implanted into corresponding femur contour lines models,extracted from CT images.Interference and matching situation between prostheses and corresponding femoral cavities were analyzed.Finally,custom hip stem prosthesis,designed according to a patient’s X-ray films,was implanted into the patient’s femoral cavity.Results These hip stem prostheses could be implanted into correspon-dingfemoral cavities and matched corresponding femoral cavities well.Conclusions The design of custom hip stem prostheses based on X-ray films is practicable and this kind of hip stem prostheses matches corresponding femoral cavities well.The software system programmed by the authors canbe used to design custom hip stem prostheses for patients.

參考文獻(xiàn)：

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