[骶髂关节解剖型钢板内固定系统的生物力学评价]

[A biomechanical evaluation of the sacroiliac anatomy type bar-plate internal fixation system].

作者信息

Zheng Qi, Bi Da-wei, Shi Shi-yuan, Fei Jun, Wei Wei, Zu Gang, Wang Yi-fan, Wang Yi-jin

机构信息

Department of Orthopaedic, Red A cross Hospital, Hangzhou 310003, Zhejiang, China.

出版信息

Zhongguo Gu Shang. 2008 Aug;21(8):577-80.

PMID:19108366

Abstract

OBJECTIVE

To evaluate the biomechanical personality of the sacroiliac anatomy type Bar-plate system (SABP), which was of fixation usage to the fracture or dislocation of the sacroliliac joint.

METHODS

Twenty fresh and freeze cadaver pelvises were prepared with pelvic fracture model,compared with different internal fixation systems such as Galveston technique, transiliac rod fixation, reconstruction plate and sacroiliac joint screws using experimental stress analysis methods,and then the stability of the pelvic was obtained and evaluated.

RESULTS

Using new SABP system to treat pelvic sacroiliac joint fracture and dislocation was higher 10%, 11%, 16%, 21% in the strength; more 12%, 14%, 21%, 31% in rigidity; less 13%, 14%, 22%, 25% in straining;less 10%, 12%, 16%, 20% in shifting than the Galveston technique, transiliac rod fixation, reconstruction plate and sacroiliac joint screws, with remarkable statistic difference (P < 0.05), and it was even better than cadaver pelvis.

CONCLUSION

To treat pelvic facture, the fixation with new SABP system is of better strength, rigidity and stability, and the SABP system is an ideal new application.

摘要

目的

评估用于骶髂关节骨折或脱位固定的骶髂解剖型钢板系统（SABP）的生物力学特性。

方法

制备20具新鲜冷冻尸体骨盆的骨盆骨折模型，采用实验应力分析方法，与Galveston技术、经髂骨棒固定、重建钢板及骶髂关节螺钉等不同内固定系统进行比较，得出并评估骨盆的稳定性。

结果

采用新型SABP系统治疗骨盆骶髂关节骨折脱位，在强度上比Galveston技术、经髂骨棒固定、重建钢板及骶髂关节螺钉分别高10%、11%、16%、21%；在刚度上分别高12%、14%、21%、31%；在应变上分别少13%、14%、22%、25%；在移位上分别少10%、12%、16%、20%，差异有统计学意义（P < 0.05），甚至优于尸体骨盆。