Department of Orthopaedic Surgery, University of Miami, Miller School of Medicine, Miami, Florida.
Max Biedermann Institute for Biomechanics, Mount Sinai Medical Center, Miami Beach, Florida.
J Arthroplasty. 2014 Oct;29(10):2039-42. doi: 10.1016/j.arth.2014.05.010. Epub 2014 May 24.
The authors present a prospective randomized blinded cadaver study designed to evaluate the engineering concept of a squeeze film effect and the effect of cement viscosity on cement penetration in total knee arthroplasty. This was done in response to an earlier clinical study demonstrating inferior tibial cement penetration using early, often liquid, phase cement. Paired cadaver tibias were implanted with the tibial component using either liquid or dough phase cement. Based on an AP fluoroscopic image, the dough phase cement penetrated deeper than liquid in all four zones. This was statistically significant in zones 1, 2 and 3. Deeper cement penetration has been shown to provide a stronger cement-bone interphase. As a result dough phase cement is recommended to obtain optimal cement penetration.
作者提出了一项前瞻性随机双盲尸体研究，旨在评估全膝关节置换术中挤压膜效应的工程概念和水泥粘性对水泥渗透的影响。这是对早期临床研究的回应，该研究表明早期、通常是液态的水泥会导致胫骨水泥渗透较差。使用液态或面团状水泥将胫骨组件植入配对的尸体胫骨中。根据前后位荧光透视图像，面团状水泥在所有四个区域的渗透深度均超过液态。在区域 1、2 和 3 中，这具有统计学意义。已证明更深的水泥渗透可提供更强的水泥-骨界面。因此，建议使用面团状水泥以获得最佳的水泥渗透。
