Ryd L, Gustafson T, Lindstrand A
Department of Orthopedics, University Hospital Lund, Sweden.
Clin Orthop Relat Res. 1993 Feb(287):61-7.
Nineteen tibial components after successful knee arthroplasty were studied with technetium 99m scintigraphy. All cases were also followed from the operation with roentgen stereophotogrammetric analysis (RSA). All but three cases became stable after an initial period of migration. Scintigraphic uptake was found in all cases, with a ratio as high as seven in the medial compartment and three in the lateral compartment. A group of cases with proven mechanical loosening showed an uptake ratio as high as 6.9 in the medial compartment and 5.5 in the lateral compartment. No correlation was found between scintigraphic uptake and alignment, whether cement was used, or the presence/absence of migration. Technetium 99m scintigraphy is not a useful method for assessing loosening in individual symptomatic cases of knee arthroplasty.
对19例膝关节置换术后成功的胫骨部件进行了锝99m闪烁扫描研究。所有病例均采用X线立体摄影测量分析（RSA）进行术后随访。除3例外，所有病例在经历了最初的移位期后均趋于稳定。所有病例均发现有闪烁显像剂摄取，内侧间室摄取率高达7，外侧间室摄取率为3。一组经证实存在机械性松动的病例，内侧间室摄取率高达6.9，外侧间室摄取率为5.5。无论是否使用骨水泥，也无论是否存在移位，闪烁显像剂摄取与对线情况之间均未发现相关性。锝99m闪烁扫描术对于评估个别有症状的膝关节置换病例的松动情况并非一种有用的方法。
