311 - Evaluation of Novel Minimal-invasive Lumbar Interbody Fusion Device...

#311 Evaluation of Novel Minimal-invasive Lumbar Interbody Fusion Device

MIS Techniques and Outcomes

Poster Presented by: A.P. Fabrizi

Author(s):

A.P. Fabrizi (1)
L. Schiabello (1)
M. Giovannini (1)
P. Alvisi (1)
Neurosurgical Spine Unit

(1) San Pier Damiano Hospital, Neurosurgery, Faenza, Italy

Abstract

The Luna Interbody Spacer System (Benvenue Medical) allows a minimal-invasive approach to spinal fusion. The implant is designed to in-situ distract the intervertebral disc space.The purpose of this study was to assess the clinical and radiological outcomes of minimal-invasive lumbar interbody fusion in conjunction with facet screws for a total MIS solution. Patients with degenerative disc disease (DDD) at one or two contiguous levels from L1-S1 were treated.

Methods: A prospective analysis of 20 patients who underwent minimal invasive lumbar interbody fusion with the Luna Interbody Spacer System (Benvenue Medical) between May 2012 and April 2013. The patient group comprised 12 males and 8 females (mean age 52y/o). The implant was placed 2 times at L3/4, 8 times at L4/5 and 10 at L5/S1. Between three and six ml of autographed bone was used (4 ml on average). Facet screws were used in all cases. All patients were clinically evaluated preoperatively and after six weeks and six months by means of a neurological examination, self-reported visual analogue scale (VAS), Oswestry Disability Index (ODI) and SF-36. Adverse events (AE) and serious adverse events (SAE) were logged. MRI and radiographs were taken preoperatively, radiographs were taken after six weeks and six months.

Results: At the 6 weeks (and/or 6 months) follow up the median pain scores (VAS) were improved significantly (7.2 to 1.86) from pre- to postintervention as were the ODI and SF-36. Radiographic assessment showed no implant displacement and segmental alignment was restored.

Conclusions: Minimal-invasive lumbar interbody fusion with the Luna Interbody Spacer System offers patients a safe and effective surgical treatment for degenerative disc disease. It led to a significant clinical improvement in pain and function and provided treatment of difficult collapsed disc space. Further long-term results are needed to evaluate fusion rates and the clinical outcome after 2 years.

AP/LL view of L4/5 arthrodesis

TLIF approach with LUNA mis fusion device and bone