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Journal of Korean Neurosurgical Society 1999;28(12): 1746-1754.
Posterior Lumbar Interbody Fusion(PLIF) by Facetolaminoplasty in Lumbar Spine Revision Surgery.
Byung Yoon Jun
Department of Neurosurgery, College of Medicine Inha University, Incheon, Korea.
ABSTRACT
OBJECTIVE
There has been a lack of enthusiasm for posterior lumbar interbody fusion(PLIF) in revision surgery. PLIF in revision surgery requires more excessive distraction of neural structures and excessive removal of the facet-laminar structure which plays a significant mechanical role, especially in rotatory stability. The author reports facetolaminoplastic PLIF which provides safe and effective PLIF and even natural circumferential fusion as well. PATIENTS AND METHODS: This study consistes of 6 patients. The facetolaminotomy was performed by osteotomizing bilateral pars interarticularis with a Gigli saw. PLIF was performed through more widely exposed intervertebral space by inserting a pair of carbon fiber cages and medial iliac bone blocks between the cages. The facetolaminotomy flap was returned to the previous site and was fixed by trans-laminar and trans-isthmic screw fixation. Bilateral facet arthrodesis was also performed.
RESULTS
There were no neural complications related to facetolaminotomy nor were there any complications related to the screw fixation for the restoration of the posterior construct. Of these 6 cases, radiological union at the interbody fusion site and at both pars interarticularis was noted in 5 cases at a 6-month postoperative follow-up. An incomplete union at unilateral pars interarticularis was noted in remaining one case.
CONCLUSIONS
The PLIF by facetolaminoplasty in revision surgery not only provides a wide interspace for safe and effective PLIF but also restores the posterior constructs, thereby preserving its important mechanical roles and often even achieving natural circumferential arthrodesis.
Key Words: Facetolaminotomy; PLIF; revision; Screw fixation
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