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Unilateral versus bilateral percutaneous pedicle screw fixation in minimally invasive transforaminal lumbar interbody fusion

Authors
 Un Yong Choi  ;  Jeong Yoon Park  ;  Kyung Hyun Kim  ;  Sung Uk Kuh  ;  Dong Kyu Chin  ;  Keun Su Kim  ;  Yong Eun Cho 
Citation
 Neurosurgical Focus, Vol.35(2) : 11-11, 2013 
Journal Title
 Neurosurgical Focus 
ISSN
 1092-0684 
Issue Date
2013
Abstract
OBJECT Clinical results for unilateral pedicle screw fixation after lumbar interbody fusion have been reported to be as good as those for bilateral instrumentation. However, no studies have directly compared unilateral and bilateral percutaneous pedicle screw fixation after minimally invasive surgery (MIS) for transforaminal lumbar interbody fusion (TLIF). The purpose of this study was to determine whether unilateral percutaneous pedicle screw fixation is comparable with bilateral percutaneous pedicle screw fixation in 1-segment MIS TLIF. METHODS This was a prospective randomized study of 53 patients who underwent unilateral or bilateral percutaneous pedicle screw fixation after MIS TLIF for 1-segment lumbar degenerative disc disease. Twenty-six patients were assigned to a unilateral percutaneous pedicle screw fixation group and 27 patients were assigned to a bilateral percutaneous pedicle screw fixation group. Operative time, blood loss, clinical outcomes (that is, Oswestry Disability Index [ODI] and visual analog scale [VAS] scores), complication rates, and fusion rates were assessed using CT scanning 2 years after surgical treatment. RESULTS The 2 groups were similar in age, sex, preoperative diagnosis, and operated level, and they did not differ significantly in the length of follow-up (27.5 [Group 1] vs 28.9 [Group 2] months) or clinical results. Both groups showed substantial improvements in VAS and ODI scores 2 years after surgical treatment. The groups differed significantly in operative time (unilateral 84.2 minutes; bilateral 137.6 minutes), blood loss (unilateral 92.7 ml; bilateral, 232.0 ml), fusion rate (unilateral 84.6%; bilateral 96.3%), and postoperative scoliotic change (unilateral 23.1%; bilateral 3.7%). CONCLUSIONS Unilateral and bilateral screw fixation after MIS TLIF produced similar clinical results. Although perioperative results were better with unilateral screw fixation, the long-term results were better with bilateral screw fixation, suggesting bilateral screw fixation is a better choice after MIS TLIF.
Full Text
http://thejns.org/doi/abs/10.3171/2013.2.FOCUS12398
DOI
10.3171/2013.2.FOCUS12398
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
Yonsei Authors
구성욱(Kuh, Sung Uk) ORCID logo https://orcid.org/0000-0003-2566-3209
김경현(Kim, Kyung Hyun)
김근수(Kim, Keun Su) ORCID logo https://orcid.org/0000-0002-3384-5638
박정윤(Park, Jeong Yoon) ORCID logo https://orcid.org/0000-0002-3728-7784
조용은(Cho, Yong Eun) ORCID logo https://orcid.org/0000-0001-9815-2720
진동규(Chin, Dong Kyu) ORCID logo https://orcid.org/0000-0002-9835-9294
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/87628
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