Lumbar Spondylosis | Bone and Spine
There are five major types of lumbar spondylolisthesis
In patients with degenerative spondylolisthesis (10a,11a), the underlying abnormality is intersegmental instability caused by facet arthropathy. These patients will not have horizontal neural foramina, and the associated facet arthropathy, not a feature of isthmic spondylolisthesis, is readily apparent on axial scans.
Spondylolysis and Spondylolisthesis of the Lumbar …
(9a) T1- and (9b) T2-weighted sagittal images in a patient with spondylolisthesis reveal clear pars defects (arrows). A horizontal configuration of the L5 neural foramina is readily apparent (red outline), with resultant foraminal stenosis. Compare this configuration with the normal keyhole appearance of the L4-5 foramina (blue outline). This horizontal configuration is typical in patients with spondylolisthesis due to spondylolysis.
Lumbar Spinal Stenosis - OrthoInfo - AAOS
Spondylolysis is an osseous defect found in both symptomatic and asymptomatic individuals. It predisposes to pathologic intervertebral subluxation or spondylolisthesis, most commonly occurring at the L5-S1 level. The pars defects are thought to represent chronic stress related injuries. Although these often occur during the first decade of life, accompanying vertebral problems develop somewhat later in life. It is important for the interpreter of MR to recognize both the primary and ancillary findings of spondylolysis, and in patients with spondylolisthesis, characteristic MR findings allow differentiation of degenerative versus isthmic causes. MR’s ability to grade disease severity and directly visualize nerve root involvement assists in treatment decisions.
Lumbar spinal stenosis - Wikipedia
After failure of nonoperative management, surgical intervention can be considered. Surgical treatment is more likely in patients with neurologic deficits or spondylolisthesis of Grade III or greater. Various surgical techniques have been utilized, including decompressive laminectomy, posterolateral fusion, interbody fusion, and direct pars repair.10 The patient can usually return to activities once they are pain-free and any fusion has healed.