Griffiths Jamie T, Taheri Arash, Day Robert E, Yates Piers J
Fremantle Hospital, Fremantle, Western Australia.
Medical Engineering and Physics Department, Royal Perth Hospital, Perth, Western Australia, Australia.
J Arthroplasty. 2015 Dec;30(12):2333-7. doi: 10.1016/j.arth.2015.06.060. Epub 2015 Jul 2.
The aim of this study was to biomechanically evaluate the Locking attachment plate (LAP) construct in comparison to a Cable plate construct, for the fixation of periprosthetic femoral fractures after cemented total hip arthroplasty. Each construct incorporated a locking compression plate with bi-cortical locking screws for distal fixation. In the Cable construct, 2 cables and 2 uni-cortical locking screws were used for proximal fixation. In the LAP construct, the cables were replaced by a LAP with 4 bi-cortical locking screws. The LAP construct was significantly stiffer than the cable construct under axial load with a bone gap (P=0.01). The LAP construct offers better axial stiffness compared to the cable construct in the fixation of comminuted Vancouver B1 proximal femoral fractures.
本研究的目的是通过生物力学方法评估锁定接骨板（LAP）结构与缆索接骨板结构相比，在骨水泥型全髋关节置换术后假体周围股骨骨折固定中的效果。每种结构均采用带双皮质锁定螺钉的锁定加压接骨板进行远端固定。在缆索结构中，使用2根缆索和2枚单皮质锁定螺钉进行近端固定。在LAP结构中，缆索被带有4枚双皮质锁定螺钉的LAP所取代。在存在骨间隙的轴向载荷下，LAP结构比缆索结构明显更具刚性（P=0.01）。在粉碎性温哥华B1型股骨近端骨折的固定中，与缆索结构相比，LAP结构具有更好的轴向刚度。
