MR imaging of lumbar spondylolysis: the importance of ancillary observations.

Ulmer, John L.; Mathews, Vincent P.; Elster, A.D.; Mark, Leighton P.; Daniels, David L.; Mueller, Wade

doi:10.2214/ajr.169.1.9207531

Cited by 68 publications

(38 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A second important finding by Frank and Miller 1 was the abnormal posterior wedging of L5, which has been considered an important predictor of spondylolysis since then. [6][7][8][9] It has been known for a long time that a certain degree of posterior wedging is normal, 3,4 and we could confirm this in our control group, in which a mean percentage wedging was seen of 11.9%. In only 5 patients, the percentage-posterior wedging exceeded 20%.…”

Section: Discussionsupporting

confidence: 76%

Hypoplasia of L5 and Wedging and Pseudospondylolisthesis in Patients with Spondylolysis: Study with MR Imaging

Wilms¹,

Maldague²,

Parizel³

et al. 2009

AJNR Am J Neuroradiol

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 76%

Hypoplasia of L5 and Wedging and Pseudospondylolisthesis in Patients with Spondylolysis: Study with MR Imaging

Wilms¹,

Maldague²,

Parizel³

et al. 2009

AJNR Am J Neuroradiol

View full text Add to dashboard Cite

show abstract

“…[1][2][3] There is a large amount of literature on a similar marrow signal intensity pattern in joints outside the spine where symptoms and abnormal marrow signal intensity in long bones correlate with clinical symptoms and trauma or response to stress. [10][11][12][13][14] Likewise, the association of type 1 pedicle marrow signal intensity changes with pars and pedicle fractures and degenerative facet changes suggests they are related to biomechanical stress created by abnormal spinal segment motion.…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5] In these reports, the signal intensity changes were categorized in a manner similar to vertebral body endplate marrow changes associated with degenerative disk disease that were described by Modic. 6 Although these changes in the MR signal intensity take 3 main forms (types 1-3), of primary interest here are the type 1 pedicle marrow signal intensity changes.…”

mentioning

confidence: 99%

Pedicle Marrow Signal Hyperintensity on Short Tau Inversion Recovery- and T2-Weighted Images: Prevalence and Relationship to Clinical Symptoms

Borg

Modic²,

Obuchowski³

et al. 2011

AJNR Am J Neuroradiol

View full text Add to dashboard Cite

BACKGROUND AND PURPOSE:Lumbar pedicle marrow hyperintense signal on T2-and STIR-weighted images is not an uncommon finding. We hypothesize that these marrow signal intensity changes and their behavior within the pedicle are associated with clinical symptoms and that their improvement or resolution correlates with clinical improvement. We investigated the prevalence of these pedicle marrow changes, associated morphologic abnormalities, and the relationship to symptoms over time.

show abstract

“…There are many indirect signs of unilateral spondylolysis such as contour bulging of the involved pars interarticularis, reactive sclerosis of the contralateral pedicle, asymmetric neural arch, deviation or step-off of the spinous process, and widening of the spinal canal with anterolisthesis or posterior subluxation of the posterior element (Fig. 6) [11,37]. Sclerosis of the contralateral pedicle showing the "dense pedicle sign" should be differentiated from other diseases, such as osteoid osteoma and Paget's disease.…”

Section: Unilateral Spondylolysismentioning

confidence: 99%

“…Ulmer et al [37] found that a widened sagittal diameter of the spinal canal, wedging of the posterior aspect of the vertebral body at the level of spondylolysis, and bone marrow signal changes of the pedicle adjacent to the isthmic spondylolysis were useful in making a diagnosis of lumbar spondylolysis without or with spondylolisthesis. Epidural fat interposition between the dura mater and the L5 spinous process is known as an indirect sign on midsagittal MR images of the lumbar spine [38].…”

mentioning

confidence: 99%

Spondylolytic spondylolisthesis: various imaging features and natural courses

Nakayama

Ehara

2014

Jpn J Radiol

View full text Add to dashboard Cite

with spondylolysis and the other with degeneration of facet joints and/or intervertebral disc. Many patients with spondylolysis remain asymptomatic and certain cases become symptomatic, with low back pain and, less commonly, radicular pain. Spondylolisthesis can also be asymptomatic, but may cause low back pain, spinal instability, and radiculopathy, which requires conservative and/or surgical treatment.The incidence of lumbar spondylolysis has been reported to be 8 % in the adult population [2], and it was variable among races and sexes. Sakai et al. [3] reported that the prevalence of lumbar spondylolysis among the Japanese population between 20 and 29 years of age, found by multidetector CT, was 5.9 %, with a male to female ratio of 2:1. Spondylolysis has never been seen in newborn babies: it is seen only after walking. The upright posture and bipedal position play a role in the development of spondylolysis [4]. The prevalence of lumbar spondylolisthesis was reported to be 20.7 % in the adult population, and spondylolysis without spondylolisthesis was relatively uncommon and was only seen at the lower lumbar level [5].Although bone defects of typical isthmic spondylolysis run obliquely through the pars interarticularis, and are well depicted on oblique lumbar radiography, atypical isthmic defects have been reported in several papers [6,7]. The pathomechanism and incidence of atypical isthmic defects is not well known, and the radiographic appearance of atypical isthmic spondylolysis has not been well recognized among radiologists. Other atypical spondylolyses included various types, and two variations have been reported in the literature [8][9][10]. Unilateral spondylolysis accounts for 3-33 % of all cases of spondylolysis and has been estimated to be approximately 3-7 % of the general population [11]. It may be associated with certain athletic activities, such as cricket, ballet, and gymnastics, and the association with Abstract The purpose of this paper is to review typical and atypical imaging features of spondylolytic spondyolisthesis and natural courses. Imaging features of the typical pars defect in early phase include bone marrow edema of the isthmus on MR imaging with progression of bone defect on plain radiography or CT. There are various defect types (pedicular cleft, retroisthmic cleft) and locations (upper lumbar spine and unilateral lesions). Natural courses also vary, with different patterns of progression and stabilization. Clinical correlation of the imaging and clinical features is often difficult.

show abstract

MR imaging of lumbar spondylolysis: the importance of ancillary observations.

Cited by 68 publications

References 0 publications

Hypoplasia of L5 and Wedging and Pseudospondylolisthesis in Patients with Spondylolysis: Study with MR Imaging

Hypoplasia of L5 and Wedging and Pseudospondylolisthesis in Patients with Spondylolysis: Study with MR Imaging

Pedicle Marrow Signal Hyperintensity on Short Tau Inversion Recovery- and T2-Weighted Images: Prevalence and Relationship to Clinical Symptoms

Spondylolytic spondylolisthesis: various imaging features and natural courses

Contact Info

Product

Resources

About