Type II Isthmic Spondylolisthesis is commonly caused by?

Prepare for the Neuromusculoskeletal II Lecture Exam with detailed study guides, flashcards, and multiple choice questions. Unlock comprehensive insights and enhance your knowledge for success.

Multiple Choice

Type II Isthmic Spondylolisthesis is commonly caused by?

Type II Isthmic Spondylolisthesis is driven by a defect in the pars interarticularis, usually a stress fracture through this region (spondylolysis). When the pars on both sides is fractured, the posterior element can no longer stabilize the vertebra, allowing the body above to slip forward relative to the one below. This is the classic cause of the isthmic form. Disc degeneration leads to a different pattern called degenerative spondylolisthesis, not this isthmic type. Ligamentum flavum hypertrophy contributes to stenosis rather than a pars defect, and osteoporosis typically causes vertebral compression fractures rather than bilateral pars fractures that produce this listhesis.

Type II Isthmic Spondylolisthesis is driven by a defect in the pars interarticularis, usually a stress fracture through this region (spondylolysis). When the pars on both sides is fractured, the posterior element can no longer stabilize the vertebra, allowing the body above to slip forward relative to the one below. This is the classic cause of the isthmic form.

Disc degeneration leads to a different pattern called degenerative spondylolisthesis, not this isthmic type. Ligamentum flavum hypertrophy contributes to stenosis rather than a pars defect, and osteoporosis typically causes vertebral compression fractures rather than bilateral pars fractures that produce this listhesis.

More practice questions