Specializing in advanced surgery for chronic back and neck conditions, The Bonati Institute for Advanced Arthroscopic Surgery offers effective, minimally invasive procedures for treating spondylolisthesis. The Bonati Arthroscopic Laminectomy involves relieving any pressure on the spinal nerves by selectively removing a portion of the lamina, creating more room in the spine for the nerves. For a full description, please visit the Institute's website at .
Many patients with spondylolysis are asymptomatic. Of those with symptoms, approximately one-quarter are associated with spondylolisthesis.3 Pain is usually limited to the low back. If the pain radiates, it is usually to the buttocks or the back of the thigh and is often from hamstring tightness rather than lumbar radiculopathy. With associated higher grade spondylolisthesis, however, radiculopathy becomes more common due to associated foraminal stenosis.
Spondylolisthesis Imaging: Overview, Radiography, …
Imaging evaluation of a patient with low back pain typically begins with a series of lumbar spine radiographs. Spondylolysis is usually evident on lateral radiographs, although oblique projections may be useful. On frontal projections, fragmentation of the lamina may be identified.4 If spondylolisthesis is present, it should be graded according to the Myerding system,5 with grade I indicating anterior subluxation of less than 25%; grade II, 25% to 50%; grade III, 50% to 75%; and grade IV, 75% to 100%.
MRI Imaging of Spondylolisthesis ..
Clinical History: A 22 year-old man presents with right-sided back pain which radiates to his right hip and leg. His symptoms began while running. (1a) T1- and (1b) T2-weighted sagittal and (1c) T2-weighted axial images of the lumbar spine are provided. What are the findings? What is your diagnosis?
Evaluation of Lumbar Spine MRI | Vertebral Column | …
The unco-vertebral joints (uncinate processes) are unique to the cervical spine. Withdegeneration, osteophytes develop at these joints and project into the lateral spinal canal andforamina. Symptoms are caused by impingement of nerve roots as they exit the foramina.
Lumbar Spondylolisthesis - Medical Media Images
Osteophytes are hypointense on all pulse sequences. Identification of central osteophytes requiresgradient-echo or T2-weighted images to achieve good contrast between the osteophytes and thehyperintense CSF within the thecal sac. On T1-weighted scans, osteophytes may be silhouetted bythe low-signal CSF Posterior ridging osteophytes produce broad ventral impressions on the thecalsac. In the cervical spine, if the posterior bony ridges are large, they can cause repeated trauma tothe spinal cord with neck motion, eventually resulting in cord deformity, atrophy, and a myelopathy.
so this is a Grade1-Grade 2 spondylolisthesis
Marginal osteophytes form around the periphery of the vertebral body end plates of the lumbarspine. The larger ones generally project anteriorly or directly lateral and do not compress neuralstructures. Posterior and posterolateral osteophytes are more likely to cause problems.
Understanding Your MRI of the Lumbar Spine
Spondylolisthesis is readily identified on the midline sagital images. However, as most cases of spondyolysis have normal lumbar vertebral alignment, other findings must be utilized to detect the pars defects. In addition to demonstrating cortical disruption of the pars (A,B), several ancillary findings have been described that may aid in the diagnosis of lumbar spondylolysis.6,7,8 These include a widened anteroposterior diameter of the spinal canal on sagittal images, reactive marrow changes in the posterior elements, and abnormal wedging of the posterior aspect of the vertebral body.