Xiong Yan, Zhao Yufeng, Wang Ziming, Du Quanyin, Chen Weijun, Wang Aimin
Department of Orthopedics, Daping Hospital, The Third Military Medical University, 10 Changjiang Branch Road, Chongqing, 400042, People's Republic of China.
Int Orthop. 2009 Oct;33(5):1415-9. doi: 10.1007/s00264-008-0713-x. Epub 2008 Dec 17.
The purpose of this study was to investigate the biomechanical properties of a new minimum contact locking plate (MC-LP) compared with the limited contact dynamic compression plate (LC-DCP). Eighteen pairs of fresh human osteoporotic cadaver radii were equally divided into three groups. Each specimen was tested in each of the following force applications: anteroposterior (AP) four point bending, mediolateral (ML) four point bending, and torsion. A 10-mm gap osteotomy model was used to simulate a comminuted diaphyseal radial fracture. For each pair, one radius received a limited contact dynamic compression plate (LC-DCP) and the contralateral radius was fixed with a minimum contact locking plate (MC-LP). Specimens were tested in nondestructive four point bending and torsion on an electronic universal material testing system. The results indicate that the MC-LP system is significantly more stable than the LC-DCP system when tested in four point bending and torsion in an osteoporotic comminuted radial diaphyseal fracture model.
本研究的目的是调查一种新型最小接触锁定钢板（MC-LP）与有限接触动力加压钢板（LC-DCP）相比的生物力学特性。18对新鲜的人骨质疏松症尸体桡骨被平均分为三组。每个标本在以下每种力的施加方式下进行测试：前后（AP）四点弯曲、内外侧（ML）四点弯曲和扭转。使用10毫米间隙截骨模型模拟粉碎性骨干桡骨骨折。对于每一对，一根桡骨使用有限接触动力加压钢板（LC-DCP）固定，对侧桡骨用最小接触锁定钢板（MC-LP）固定。在电子万能材料测试系统上对标本进行无损四点弯曲和扭转测试。结果表明，在骨质疏松性粉碎性桡骨干骨折模型中进行四点弯曲和扭转测试时，MC-LP系统比LC-DCP系统明显更稳定。
