骨延长术中的延迟牵张。羔羊愈合情况改善。

Delayed distraction in bone lengthening. Improved healing in lambs.

作者信息

Gil-Albarova J, de Pablos J, Franzeb M, Cañadell J

机构信息

Department of Orthopedics, Medical School, University of Navarra, Pamplona, Spain.

出版信息

Acta Orthop Scand. 1992 Dec;63(6):604-6. doi: 10.1080/17453679209169717.

DOI:10.1080/17453679209169717

PMID:1471504

Abstract

We compared delayed distraction (DD) with immediate distraction (ID) in bone-lengthening. Open femoral diaphyseal osteotomy was performed on 24 three-month-old lambs, and external distractor fixators were applied. In the ID group (n 12), distraction commenced on the first postoperative day; in the DD group (n 12), distraction was delayed until the tenth day after surgery. In all the animals, the femur was lengthened by 2 cm at the rate of 1 mm/day. The animals were killed 1, 2, and 3 months postoperatively. Radiography and densitometry of the lengthened callus showed that DD, compared with ID, improved the quality of the callus with quicker, denser, and more homogeneous bone formation.

摘要

我们比较了骨延长术中延迟牵张（DD）与即刻牵张（ID）的效果。对24只3月龄羔羊行开放性股骨干截骨术，并应用外固定牵张器。在即刻牵张组（n = 12），术后第1天开始牵张；在延迟牵张组（n = 12），牵张延迟至术后第10天。所有动物的股骨均以每天1 mm的速度延长2 cm。术后1、2和3个月处死动物。对延长部位骨痂的放射学检查和骨密度测定显示，与即刻牵张相比，延迟牵张能改善骨痂质量，形成更快、更致密且更均匀的骨组织。