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題 名 | Tibial Baseplate Fracture after Mobile-Bearing Total Knee Arthroplasty--A Case Report=低接觸壓力脛骨可動式聚乙烯襯墊人工膝關節術後脛骨元件疲乏性斷裂之病例報告 |
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作 者 | 洪俊青; 黃昌宏; 高鴻展; 盧永昌; 張定國; 黃俊雄; | 書刊名 | Journal of Orthopaedic Surgery Taiwan |
卷 期 | 27:2 2010.06[民99.06] |
頁 次 | 頁91-96 |
分類號 | 416.26 |
關鍵詞 | 人工膝關節術; 脛骨; 疲乏性斷裂; Tibial baseplate; Fracture; Mobile bearing; Total knee prosthesis; |
語 文 | 英文(English) |
英文摘要 | Metallic tibial baseplate fracture is an infrequent complication after total knee arthroplasty (TKA). From our clinical experience and literature review, baseplate fractures were occasionally found in fixed bearing knees, but no case was found in mobile bearing knees so far. We present a case of baseplate fracture in Low-Contact-Stress Meniscal-Bearing total knee prosthesis after twelve-years of implantation. Clinical examination, retrieval analysis, scanning electron microscopy (SEM) and Energy Dispersive Spectrometer (EDS) were comprehensively applied to speculate the possible factors resulting in metallic fracture. The tibial baseplate was fractured along the edge of medial track rail of meniscal bearing. Fatigue striations were observed near the posteromedial portion of the baseplate by SEM observation, indicating fracture initiation started surrounding the track rail. No material defects were detected by EDS. |
本系統中英文摘要資訊取自各篇刊載內容。