Szabó János, Manó Sándor, Lőrinc Ádám, Győrfi Gyula, Kiss László, Csernátony Zoltán
Department of Orthopaedics, University of Debrecen Medical and Health Science Centre, Nagyerdei krt 98, Debrecen, 4032, Hungary,
Eur J Orthop Surg Traumatol. 2014 Jul;24(5):679-84. doi: 10.1007/s00590-013-1246-6. Epub 2013 Jun 1.
The incorporation of bulk bone grafts in the replacement of dysplastic acetabulum is determined by the biological environment of the recipient site, the size of the contact surface, and the stability of the osteosynthesis used. Based on these, the present study compares the Harris acetabular plasty used routinely by us with the Radojević L-shaped graft technique.
For our measurements, we used 20 hemi-pelvises removed from 10 cadavers. In 10 cases, acetabular plasty according to Harris, in 10 cases Radojević L-plasty, was performed. The biological environment was analyzed; with geometric calculations, the contact surface was determined, and with a material testing apparatus, the primary stability of the osetosynthesis was measured. For the measurements, a new method was developed.
The Radojević technique provides a better biological environment for graft ingrowth. The contact surface is nearly twice as much as in Harris plasty. No significant difference was found in the primary stability of the osteosynthesis used. The deviation on the value of the stability measurements is explained by the differences in the bone quality of the cadavers used.
Based on the 3 aspects examined, the Radojević L-shaped graft technique has similar stability when compared to the Harris acetabular plasty, but provides better biological circumstances and larger graft host bone contact. Based on this, we started using the L-shaped technique in our department.
在发育不良髋臼置换术中使用大块骨移植受受体部位的生物学环境、接触面大小和所用骨合成的稳定性影响。基于此，本研究将我们常规使用的哈里斯髋臼成形术与拉多耶维奇L形移植技术进行比较。
我们使用从10具尸体上取下的20个半骨盆进行测量。10例采用哈里斯髋臼成形术，10例采用拉多耶维奇L形髋臼成形术。分析生物学环境；通过几何计算确定接触面，并使用材料测试设备测量骨合成的初始稳定性。为进行测量，开发了一种新方法。
拉多耶维奇技术为移植物生长提供了更好的生物学环境。接触面几乎是哈里斯成形术的两倍。所用骨合成的初始稳定性未发现显著差异。稳定性测量值的偏差是由所用尸体骨质的差异所解释的。
基于所考察的三个方面，与哈里斯髋臼成形术相比，拉多耶维奇L形移植技术具有相似的稳定性，但提供了更好的生物学条件和更大的移植物与宿主骨接触面。基于此，我们科室开始使用L形技术。
