Endoscopic lumbar foraminotomy

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
Alexander I EvinsChristoph P Hofstetter

Abstract

Foraminal stenosis frequently causes radiculopathy in lumbar degenerative spondylosis. Endoscopic transforaminal techniques allow for foraminal access with minimal tissue disruption. However, the effectiveness of foraminal decompression by endoscopic techniques has yet to be studied. We evaluate radiographic outcome of endoscopic transforaminal foraminotomies performed at L3-L4, L4-L5, and L5-S1 on cadaveric specimens. Before and after the procedures, three dimensional CT scans were obtained to measure foraminal height and area. Following the foraminotomies, complete laminectomies and facetectomies were performed to assess for dural tears or nerve root damage. L3-L4 preoperative foraminal height increased by 8.9%, from 2.12±0.13cm to 2.27±0.14cm (p<0.01), and foraminal area increased by 24.8% from 2.21±0.18cm(2) to 2.72±0.19cm(2) (p<0.01). At L4-L5, preoperative foraminal height was 1.87±0.17cm and area was 1.78±0.18cm(2). Endoscopic foraminotomies resulted in a 15.3% increase of foraminal height (2.11±0.15cm, p<0.05) and 44.8% increase in area of (2.51±0.21cm(2), p<0.01). At L5-S1, spondylitic changes caused diminished foraminal height (1.26±0.14cm) and foraminal area (1.17±0.18cm(2)). Postoperatively, foraminal height increas...Continue Reading

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Citations

Feb 2, 2016·Neurosurgical Focus·Karthik MadhavanMichael Y Wang
Feb 2, 2016·Neurosurgical Focus·Lynn B McGrathChristoph P Hofstetter
Jan 24, 2019·BioMed Research International·Suxi GuXifeng Zhang
Apr 4, 2017·Pain Medicine : the Official Journal of the American Academy of Pain Medicine·Sang Chul LeeJee Youn Moon
Apr 5, 2019·Neurospine·Alexander J ButlerJeffrey C Wang
Jun 13, 2020·Global Spine Journal·Christoph P HofstetterJin-Sung Kim
Sep 8, 2021·Pain and Therapy·Enrico GiordanFlaminia Coluzzi

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