Development and clinical evaluation of iliac bars lever reduction and fixation system for spondylolisthesis
- VernacularTitle:腰椎滑脱髂骨棒杠杆复位固定系统的研制和临床应用
- Author:
Guochuan ZHANG
;
Yong SHEN
;
Wenyuan DING
- Publication Type:Journal Article
- Keywords:
internal fixation;
spondylolisthesis;
reduction
- From:
Orthopedic Journal of China
2006;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To introduce the composion and mechanism of Iliac Bars Lever Reduction and Fixation System(IBRFS),and to evaluate the clinical efficacy of IBRFS.[Method]IBRFS was made of stainless steel composing of pedicle screw,anglar lift,reduction rod,iliac bar and screw nut A,B,C.Eighteen volunteers offered their contribution for this study.There were 6 males and 12 females with mean age of 53 years(range from 43-66 years).The classification was DS 9,IS 8,trauma 1.The slip segments were L4 6,L5 12.The reductive operation was conducted by IBRFS.Clinical efficiency was evaluated by slip ratio,slip angle,sacral slope and the height of intervertebral space.[Result]Eighteen patients were followed up from 8 to 28 months(average 14.9 months).Preoperative JOA scores ranged from-1 to 22(mean 10.7).Postoperative JOA scores ranged from 13 to 29(mean26.9).The overall recovery rate ranged from 42.9% to 98%(mean 88.3%).There was no neurologic complication.Slip ratio was improved from 20.80% to 5.01%,slip angle from 6.67?to 12? and sacral slope from 32.2? to 43.3?.The height ratio of intervertebral space was increased from 0.78 to 0.97.[Conclusion]The reduction efficiency of IBRFS is reliable.The restoration of height of intervertebral space is improved.IBRFS is an effective internal fixation.
