The Morphometric Study of Degenerative Lateral Canal Stenosis at L4-L5 and L5-S1 Using Magnetic Resonance Imaging (MRI): Feasibility Analysis for Posterior Surgical Decompression
- Author:
Yusof MI
;
MSM Shif
;
MS Abdullah
- Publication Type:Journal Article
- MeSH:
Spinal Stenosis
- From:Malaysian Orthopaedic Journal
2015;9(1):4-10
- CountryMalaysia
- Language:English
-
Abstract:
This study was to evaluate the morphological features of
degenerative spinal stenosis and adequacy of lateral canal
stenosis decompression via unilateral and bilateral
laminectomy. Measurements of facet joint angulation (FJA),
mid facet point (MFP), mid facet point distance (MFPD),
the narrowest point of the lateral spinal canal (NPLC) and
the narrowest point of the lateral spinal canal distance
(NPLCD) were performed. At L4L5 of the right and left side,
the mean distance between the lateral border of the dura and
MFP was 1.0 ± 0.2 cm and 1.0 ± 0.3cm respectively. The
mean NPLC was seen at 0.7 ± 0.3 and 0.7 ± 0.3 cm cm from
the dura. At L5S1 of the right and left side, the mean distance
between the lateral border of the dura and MFP was 1.2± 0.2
and 1.3 ± 0.2 cm respectively. The mean NPLC was seen at
0.8 ± 0.4 and 0.9 ± 0.5 cm from the dura. Unilateral
laminectomy may result in incomplete decompression.
- Full text:P020150526298633731234.pdf