Occasionally, a patient can slip their vertebrae and not feel any pain or numbness until years after the fact.
When it does occur, however, it often manifests itself as pain in the lower back or buttocks.
Type II C: Like type II A, this condition does involve a full fracture of the pars interarticularis.
However, instead of long-term overuse and hyperextension, the break is caused through intense trauma (like a car accident).
As the discs lose water, they shrink which brings the vertebrae above and below, along with their facet joints, closer together.
With this extra space and without the discs acting as a cushion, the facet joints cannot control the movement of the vertebrae as well and they become hypermobile which can, eventually, lead the a vertebrae disc moving forward.Additionally, the muscles in legs may feel tight or weak which can cause patients to walk with a limp.Type I Spondylolisthesis is also commonly known as congenital spondylolisthesis.Type II spondylolisthesis, also known as isthmic, is the most common form of the condition and it usually occurs in adults as a result of abnormal wear on the vertebrae from repetitive stress.In Isthmic II spondylolisthesis there’s a problem with the pars interarticularis, a section of bone that sits towards the back of the vertebrae.In this condition, the pars fractures completely which allows the injured vertebrae to shift or slip forward.Type II B: This form of spondylolisthesis is similar to Type II A, however in this condition the pars interarticularis fractures, but does not fully break.Type II spondylolisthesis can be divided into three individual subcategories.Type II A: This form of Type II spondylolisthesis commonly occurs in people who engage in high intensity, contact sports like football, gymnastics and weightlifting and have multiple microfractures in the pars interarticularis due to overstretching (hyperextension) and overuse.However, in this condition, another item in the vertebrae breaks instead of the pars interarticularis which causes a slipped disc.This form of spondylolisthesis is caused by spinal tumors that weaken the bones in the vertebrae and cause fractures.