Zusammenfassung
Ziel: Untersuchung der Verteilungsmuster von (Modic-)Signalveränderungen (SV) an den kartilaginären
Endplatten (CEP) von vor- und nichtoperierten Bandscheibensegmenten L3-S1 in der MRT
mit besonderem Bezug auf das Vorliegen von Rezidivvorfällen. Material und Methoden: In einer retrospektiven Studie wurden von 65 mikrodiskotomierten Patienten MRT-Untersuchungen
der Wirbelkörper L3 bis S1 ausgewertet. Von den 190 untersuchten Segmenten waren 67
voroperiert. Diese wurden in eine Gruppe ohne Rezidivvorfall (n = 48) und mit Rezidivvorfall
(n = 19) unterteilt. Nichtoperierte Segmente (n = 123) stellten ebenfalls eine separate
Gruppe dar. In den drei Gruppen wurden mittels der sag. T1- u. T2-gew. Aufnahmen die
Häufigkeiten der unterschiedlichen Modic-Typen und anhand der sag. T2-gew. Aufnahmen
insbesondere die Verteilung von SV an den oberen und unteren CEP untersucht. Hierfür
erfolgte eine Einteilung jeder CEP in neun Felder. Ergebnisse: Operierte Segmente wiesen signifikant häufiger (p < 0,001) und ausgedehntere (p <
0,001) SV auf als nichtoperierte Segmente. Nichtoperierte Segmente zeigten an der
oberen und unteren CEP seltener SV in den zentralen Feldern (p = 0,056 bzw. p = 0,015).
Bei operierten Segmenten ohne Rezidivvorfall waren an der oberen CEP SV signifikant
häufiger auf der OP-Seite zu finden als midsagittal und kontralateral (p = 0,016,
p = 0,037) und auf der OP-Seite der unteren CEP signifikant häufiger als kontralateral
(p = 0,027). Segmente mit Rezidiv zeigten keine Betonung der OP-Seite. Sie wiesen
gegenüber den operierten Segmenten ohne Rezidiv signifikant häufiger SV in den zentralen
(p = 0,047) und ventral midsagittalen (p = 0,006) Feldern der oberen CEP auf. Schlussfolgerung: 1. In den drei Gruppen finden sich unterschiedliche Verteilungsmuster der Signalveränderungen
an den CEP. 2. Die Bedeutung der zentralen Region der CEP für die Integrität der Bandscheibe
wird unterstrichen durch das geringe Vorkommen von Signalveränderungen an dieser Stelle
in nichtoperierten Segmenten. 3. Es zeigen sich deutliche Hinweise für den Einfluss
der Operation auf die Entwicklung und Verteilung von Signalveränderungen. 4. In voroperierten
Segmenten können Signalveränderungen im zentralen und ventral midsagittalen Feld der
oberen CEP hinweisend auf die Entwicklung eines Rezidivvorfalles sein.
Abstract
Purpose: To study the location of (Modic) MR signal alterations (SA) of the cartilage endplate
(CEP) in pre- and non-operated segments L3-S1 with special focus on the presence of
recurrent lumbar disc herniation (RLDH). Materials and Methods: In a retrospective study the MR images of vertebrae L3-S1 of 65 consecutive patients
with a history of microdiscectomy were evaluated. Of the 190 segments studied, 67
were pre-operated. These were divided into a group with recurrent lumbar disc herniation
(RLDH) (n = 19) and a group without evidence of RLDH (n = 48). Non-operated segments
(n = 123) were also considered as a separate group. In these three groups the prevalence
of different Modic types was determined using the sag. T1- and T2-weighted images,
and, in particular, the distribution of SA at the upper and lower CEP was examined
by evaluating the sag. T2-weighted images. In order to achieve this, each CEP was
divided into nine regions. Results: Pre-operated segments showed significantly more frequent (p < 0.001) and more expansive
(p < 0.001) SA than non-operated segments. Non-operated segments showed SA less frequently
in the central region of both upper and lower CEP (p = 0.056 and p = 0.015, respectively).
In operated segments without RLDH, the upper CEP had significantly more SA on the
operation side than in the mid-sagittal and contra-lateral regions (p = 0.016, p =
0.037) and significantly more on the operation side of the lower CEP than in the contra-lateral
region (p = 0.027). Operated segments with RLDH did not show an emphasis of SA on
the operation side. In this group SA occurred significantly more often in the central
and ventral mid-sagittal regions of the upper CEP than in the pre-operated segments
without RLDH. Conclusion: 1. There are different patterns of signal alterations in the three groups. 2. The
importance of the central region of the CEP for the integrity of the disc is strongly
supported by the low incidence of signal alterations in this location in non-operated
segments. 3. There are clear indications for the influence of the operation on the
development and distribution of signal alterations. 4. In pre-operated segments signal
alterations occurring in the central and ventral mid-sagittal regions of the upper
CEP can be indicative of the development of RLDH.
Key words
Spine - vertebral endplate changes - Modic - recurrent lumbar disk herniation - microdiscectomy
- signalalteration
Literatur
1
Brock M, Patt S, Mayer H M.
The form and structure of the extruded disc.
Spine.
1992;
178
1457-1461
2
Harada Y, Nakahara S.
A pathologic study of lumbar disc herniation in the elderly.
Spine.
1989;
178
1020-1024
3
Yasuma T, Makino E, Saito S. et al .
Histological development of intervertebral disc herniation.
J Bone Joint Surg Am.
1986;
178
1066-1072
4
Yasuma T, Koh S, Okamura T. et al .
Histological changes in aging lumbar intervertebral discs. Their role in protrusions
and prolapses.
J Bone Joint Surg Am.
1990;
178
220-229
5
Tanaka M, Nakahara S, Inoue H.
A pathologic study of discs in the elderly. Separation between the cartilaginous endplate
and the vertebral body.
Spine.
1993;
178
1456-1462
6
Modic M T, Pavlicek W, Weinstein M A. et al .
Degenerative disk disease: assessment of changes in vertebral body marrow with MR
imaging.
Radiology.
1988;
178
193-199
7
Schmid G, Witteler A, Willburger R. et al .
Lumbar disk herniation: correlation of histologic findings with marrow signal intensity
changes in vertebral endplates at MR imaging.
Radiology.
2004;
178
352-358
8
Willburger R E, Ehiosun U K, Kuhnen C. et al .
Clinical symptoms in lumbar disc herniations and their correlation to the histological
composition of the extruded disc material.
Spine.
2004;
178
1655-1661
9
Karchevsky M, Schweitzer M E, Carrino J A. et al .
Reactive endplate marrow changes: a systematic morphologic and epidemiologic evaluation.
Skeletal Radiol.
2005;
178
125-129
10
Mitra D, Cassar-Pullicino V N, McCall I W.
Longitudinal study of vertebral type-1 end-plate changes on MR of the lumbar spine.
Eur Radiol.
2004;
178
1574-1581
11
De Roos A, Kressel H, Spritzer C. et al .
MR imaging of marrow changes adjacent to end plates in degenerative lumbar disk disease.
Am J Roentgenol.
1987;
178
531-534
12
Roberts S, Urban J P, Evans H. et al .
Transport properties of the human cartilage endplate in relation to its composition
and calcification.
Spine.
1996;
178
415-420
13
Roberts S, Menage J, Urban J P.
Biochemical and structural properties of the cartilage end-plate and its relation
to the intervertebral disc.
Spine.
1989;
178
166-174
14
Nachemson A, Lewin T, Marudas A. et al .
In vitro diffusion of dye through the endplates and the anulus fibrosus of human intervertebral
discs.
Acta Orthop Scand.
1970;
178
589-607
15
Vital J M, Gille O, Pointillart V. et al .
Course of Modic 1 six months after lumbar posterior osteosynthesis.
Spine.
2003;
178
715-720
16
Weishaupt D, Zanetti M, Hodler J. et al .
MR imaging of the lumbar spine: prevalence of intervertebral disk extrusion and sequestration,
nerve root compression, end plate abnormalities, and osteoarthritis of the facet joints
in asymptomatic volunteers.
Radiology.
1998;
178
661-666
17
Lenz G P, Assheuer J, Lenz W. et al .
New aspects of lumbar disc disease. MR imaging and histological findings.
Arch Orthop Trauma Surg.
1990;
178
75-82
18
Braithwaite I, White J, Saifuddin A. et al .
Vertebral end-plate (Modic) changes on lumbar spine MRI: correlation with pain reproduction
at lumbar discography.
Eur Spine J.
1998;
178
363-368
19
Toyone T, Takahashi K, Kitahara H. et al .
Vertebral bone-marrow changes in degenerative lumbar disc disease. An MRI study of
74 patients with low back pain.
J Bone Joint Surg Br.
1994;
178
757-764
20
Kokkonen S M, Kurunlahti M, Tervonen O. et al .
Endplate degeneration observed on magnetic resonance imaging of the lumbar spine:
correlation with pain provocation and disc changes observed on computed tomography
discography.
Spine.
2002;
178
2274-2278
21
Boden S D, Davis D O, Dina T S. et al .
Postoperative diskitis: distinguishing early MR imaging findings from normal postoperative
disk space changes.
Radiology.
1992;
178
765-771
22
Ross J S, Zepp R, Modic M T.
The postoperative lumbar spine: enhanced MR evaluation of the intervertebral disk.
Am J Neuroradiol.
1996;
178
323-331
23
Ross J S, Masaryk T J, Modic M T. et al .
Lumbar spine: postoperative assessment with surface-coil MR imaging.
Radiology.
1987;
178
851-860
24
Moore R J, Osti O L, Vernon-Roberts B. et al .
Changes in endplate vascularity after an outer anulus tear in the sheep.
Spine.
1992;
178
874-878
25
Moore R J, Vernon-Roberts B, Osti O L. et al .
Remodeling of vertebral bone after outer anular injury in sheep.
Spine.
1996;
178
936-940
26
Osti O L, Vernon-Roberts B, Fraser R D.
1990 Volvo Award in experimental studies. Anulus tears and intervertebral disc degeneration.
An experimental study using an animal model.
Spine.
1990;
178
762-767
27
Vincent J M, Baldwin J E, Sims C. et al .
Vertebral ‘corner’ defect associated with lumbar disk herniation shown by magnetic
resonance imaging.
Spine.
1993;
178
109-113
28
Grant J P, Oxland T R, Dvorak M F.
Mapping the structural properties of the lumbosacral vertebral endplates.
Spine.
2001;
178
889-896
29
Oki S, Matsuda Y, Shibata T. et al .
Morphologic differences of the vascular buds in the vertebral endplate: scanning electron
microscopic study.
Spine.
1996;
178
174-177
30
Weishaupt D, Zanetti M, Hodler J. et al .
Painful Lumbar Disk Derangement: Relevance of Endplate Abnormalities at MR Imaging.
Radiology.
2001;
178
420-427
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