Pandit H, Jenkins C, Beard D J, Gallagher J, Price A J, Dodd C A F, Goodfellow J W, Murray D W
Oxford Orthopaedic Engineering Centre, Nuffield Department of Orthopaedic Surgery, Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK.
J Bone Joint Surg Br. 2009 Feb;91(2):185-9. doi: 10.1302/0301-620X.91B2.21413.
We randomised 62 knees to receive either cemented or cementless versions of the Oxford unicompartmental knee replacement. The implants used in both arms of the study were similar, except that the cementless components were coated with porous titanium and hydroxyapatite. The tibial interfaces were studied with fluoroscopically-aligned radiographs. At one year there was no difference in clinical outcome between the two groups. Narrow radiolucent lines were seen at the bone-implant interfaces in 75% of cemented tibial components. These were partial in 43%, and complete in 32%. In the cementless implants, partial radiolucencies were seen in 7% and complete radiolucencies in none. These differences are statistically significant (p < 0.0001) and imply satisfactory bone ingrowth into the cementless implants.
我们将62个膝关节随机分组，分别接受骨水泥型或非骨水泥型牛津单髁膝关节置换术。研究的两个组所使用的植入物相似，只是非骨水泥组件涂有多孔钛和羟基磷灰石。通过荧光透视对准的X线片对胫骨界面进行研究。一年时，两组的临床结果无差异。在75%的骨水泥型胫骨组件的骨-植入物界面处可见狭窄的透光线。其中43%为部分透光线，32%为完全透光线。在非骨水泥型植入物中，7%可见部分透光线，无一例出现完全透光线。这些差异具有统计学意义（p < 0.0001），表明非骨水泥型植入物中有令人满意的骨长入。
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