引导性生长的生物力学：螺钉尺寸、钢板尺寸或螺钉构型有影响吗？

The biomechanics of guided growth: does screw size, plate size, or screw configuration matter?

作者信息

Schoenleber Scott J, Iobst Christopher A, Baitner Avi, Standard Shawn C

机构信息

aDepartment of Orthopaedics, Jackson Memorial Hospital, University of Miami bDepartment of Orthopaedic Surgery, Miami Children's Hospital, Miami, Florida cRubin Institute for Advanced Orthopaedics, Baltimore, Maryland, USA.

出版信息

J Pediatr Orthop B. 2014 Mar;23(2):122-5. doi: 10.1097/BPB.0000000000000026.

DOI:10.1097/BPB.0000000000000026

PMID:24322536

Abstract

Guided growth with the eight-plate is a commonly used technique to correct angular limb deformities in children. However, the optimal combination of plate size, screw size, and screw configuration has not been determined. Using osteotomized femoral sawbones and a rail frame, we developed a growth model to examine the effect of these variables at 6-month, 12-month, and 18-month growth increments. The mean annual coronal plane change was 11.3°. Screw size and plate size were not associated with the rate of angular correction. Screw configuration was important, with parallel screws resulting in optimal correction at all time points compared with divergent screws (P<0.05).

摘要

使用八孔钢板引导生长是矫正儿童肢体成角畸形的常用技术。然而，钢板尺寸、螺钉尺寸和螺钉配置的最佳组合尚未确定。我们使用截骨的股骨锯骨和轨道框架，建立了一个生长模型，以研究这些变量在6个月、12个月和18个月生长增量时的影响。平均每年冠状面变化为11.3°。螺钉尺寸和钢板尺寸与角度矫正率无关。螺钉配置很重要，与发散螺钉相比，平行螺钉在所有时间点都能实现最佳矫正（P<0.05）。