• Type 1: Dysplastic: Associated with a congenital deficiency of the L5-S1 articulation
• Type 2: Isthmic: Associated with a lesion in the pars interarticularis
• Subtype 2A: Lytic defect (stress fracture) of the pars
• Subtype 2B: An elongated or attenuated pars
• Subtype 2C: An acute pars fracture
• Type 3: Degenerative. Disc degeneration and facet arthrosis lead to spondylolisthesis and associated spinal stenosis
• Type 4: Traumatic. An acute fracture in a region of the posterior elements other than the pars interarticularis (e.g. facets, pedicle, lamina) leads to spondylolisthesis
• Type 5: Pathologic. Generalized bone disease (e.g. metabolic, neoplastic) results in attenuation of the pars and/or pedicle region leading to spondylolisthesis
• Type 6: Postsurgical Spondylolisthesis that develops following lumbar laminotomy or laminectomy
Was this article helpful?
Thank you for deciding to learn more about the disorder, Osteoarthritis. Inside these pages, you will learn what it is, who is most at risk for developing it, what causes it, and some treatment plans to help those that do have it feel better. While there is no definitive “cure” for Osteoarthritis, there are ways in which individuals can improve their quality of life and change the discomfort level to one that can be tolerated on a daily basis.