Universität zu Köln

Sobottke, Rolf, Koy, Timmo, Roellinghoff, Marc, Siewe, Jan, Kreitz, Thomas, Mueller, Daniel, Bangard, Christopher and Eysel, Peer (2010). Computed tomography measurements of the lumbar spinous processes and interspinous space. Surg. Radiol. Anat., 32 (8). S. 731 - 739. PARIS: SPRINGER FRANCE. ISSN 0930-1038

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Abstract

Purpose This study examines the anatomic proportions of the interspinous space and the spinous processes, considering the optimal placement of an interspinous spacer. Methods Between January 2008 and December 2009, 565 patients undergoing computed tomography (CT) scans of the abdomen for various reasons were collected retrospectively for the study. Using the CT scan data, spinous processes of the lumbar spine L1-5 and the interspinous spaces T12-L5 were measured. Results The average measured interspinous space was 9.1 +/- 2.5 mm. This space became significantly (p<0.001) smaller from anterior to posterior. Average cortical thickness of all lumbar spinous processes was 2.5 +/- 0.5 mm. Cortical thickness decreased significantly (p<0.001) from anterior to posterior. The cortex of the spinous processes from L2 (2.67 +/- 0.45 mm) and L3 (2.66 +/- 0.94 mm) was significantly thicker (p<0.001) than that of the others. The spinous process of L5 had the thinnest (p<0.001) cortex (2.10 +/- 0.41 mm), as well as the smallest (p<0.001) volume (3.0 +/- 1.0 ml) and the shortest (p<0.001) height (16.6 +/- 3.6 mm). Conclusions The spinous processes of L2 and L3 are the largest and sturdiest, and that of L5 is the weakest. The L4/5 segment features the smallest interspinous space with the thinnest cortex of all lumbar spinous processes. Because the interspinous space narrows posteriorly and the cortex is thicker anteriorly, it seems that the best anatomic position for a stand alone interspinous spacers is anterior.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Sobottke, Rolf UNSPECIFIED UNSPECIFIED UNSPECIFIED Koy, Timmo UNSPECIFIED UNSPECIFIED UNSPECIFIED Roellinghoff, Marc UNSPECIFIED UNSPECIFIED UNSPECIFIED Siewe, Jan UNSPECIFIED UNSPECIFIED UNSPECIFIED Kreitz, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Bangard, Christopher UNSPECIFIED UNSPECIFIED UNSPECIFIED Eysel, Peer UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-496273
DOI:	10.1007/s00276-010-0686-5
Journal or Publication Title:	Surg. Radiol. Anat.
Volume:	32
Number:	8
Page Range:	S. 731 - 739
Date:	2010
Publisher:	SPRINGER FRANCE
Place of Publication:	PARIS
ISSN:	0930-1038
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NEUROGENIC INTERMITTENT CLAUDICATION; X-STOP; SPINAL STENOSIS; IMPLANT; DECOMPRESSION; SYSTEM; STRENGTH; SURGERY; FORAMEN; FLEXION Multiple languages Anatomy & Morphology; Radiology, Nuclear Medicine & Medical Imaging; Surgery Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49627