| Home | E-Submission | Sitemap | Editorial Office |  
Journal of Korean Neurosurgical Society 2005;38(4): 255-258.
Wedge Shape Cage in Posterior Lumbar Interbody Fusion: Focusing on Changes of Lordotic Curve.
Joon Seok Kim, Seong Hoon Oh, Sung Bum Kim, Hyeong Joong Yi, Yong Ko, Young Soo Kim
Department of Neurosurgery, Hanyang University College of Medicine, Seoul, Korea. osh8496@hanyang.ac.kr
Lumbar lordotic curve on L4 to S1 level is important in maintaining spinal sagittal alignment. Although there has been no definite report in lordotic value, loss of lumbar lordotic curve may lead to pathologic change especially in degenerative lumbar disease. This study examines the changes of lumbar lordotic curve after posterior lumbar interbody fusion with wedge shape cage.
We studied 45patients who had undergone posterior lumbar interbody fusion with wedge shape cage and screw fixation due to degenerative lumbar disease. Preoperative and postoperative lateral radiographs were taken and one independent observer measured the change of lordotic curve and height of intervertebral space where cages were placed. Segmental lordotic curve angle was measured by Cobb method. Height of intervertebral space was measured by averaging the sum of anterior, posterior, and midpoint interbody distance. Clinical outcome was assessed on Prolo scale at 1month of postoperative period. RESULTS: Nineteen paired wedge shape cages were placed on L4-5 level and 6 paired same cages were inserted on L5-S1 level. Among them, 18patients showed increased segmental lordotic curve angle. Mean increased segmental lordotic curve angle after placing the wedge shape cages was 1.96? Mean increased disc height was 3.21mm. No cases showed retropulsion of cage. The clinical success rate on Prolo's scale was 92.0%. CONCLUSION: Posterior lumbar interbody fusion with wedge shape cage provides increased lordotic curve, increased height of intervertebral space, and satisfactory clinical outcome in a short-term period.
Key Words: Lordotic curve; PLIF; Lordotic shape cage
Full text via DOI  Full text via DOI
Download Citation  Download Citation
Related articles
Posterior Lumbar Interbody Fusion.  1984 September;13(3)
Posterior Lumbar Interbody Fusion.  1986 September;15(3)
Evaluation of Posterior Lumbar Interbody Fusion.  1989 March;18(3)
Posterior Lumbar Interbody Fusion with Threaded Fusion Cage(TFC).  1993 April;22(4)
Unilateral Posterior Lumbar Interbody Fusion with bone Dowels.  1996 June;25(6)
Editorial Office
1F, 18, Heolleung-ro 569-gil, Gangnam-gu, Seoul, Republic of Korea
TEL: +82-2-525-7552   FAX: +82-2-525-7554   E-mail: office@jkns.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © Korean Neurosurgical Society.                 Developed in M2PI
Close layer