SPONDYLOLYTIC SPONDYLOLITHESIS BY DR. SHIVANI GOYAL.pptx

Spondylolytic spondylolisthesis is a spinal condition in which there is fracture of pars interarticularis and slippage of vertebra from one over another.
usually, it occurs in any mobile segment of spine but most commonly occurs in L5/S1 segment of the spine.
Due to which there is narrowing of joint space result in compression of spinal structures like muscles, spinal nerves, vertebral bodies etc.

1. SPONDYLOLYTIC SPONDYLOLITHESIS PRESENTED BY DR.SHIVANI GOYAL(PT)

2. PARS INTERARTICULARIS – It is the portion of the laminae that is between the superior and inferior articular processes . SPONDYLOLYSIS – It is a defect or stress fracture in the pars interarticularis of vertebral arch. It may be unilateral or bilateral defect . SPONDYLOLITHESIS – It is the slippage of one vertebral body with respect to the adjacent vertebral body .

3. Spondylolytic spondylolisthesis When stress fracture of the pars interarticularis occur bilaterally , the result may be spondylolytic spondylolisthesis. In this condition , the posterior elements are completely separated from the reminder of the neural arch and the vertebral body. The vertebral body may then begin to slip forward on the vertebra below It can occur in any mobile segment but most commonly occur at the L5/S1 mobile segment because of the angulation of the segment and the shear forces that exist there. The altered location of slippage of vertebra changes its relationship to adjacent structures and creates excessive stress on supporting ligaments and joints . Overstretched ligaments may lead to lack of stability or hypermobility of the mobile segment .

4. Narrowing of the posterior joint space , which occurs with the slippage of a vertebra , may cause compression of spinal nerves , spinal cord , or the cauda equina . Pain may arise from excessive stress on any of the following structures :- Anterior and posterior longitudinal ligaments . Interspinous ligaments Spinal nerves Dura matter Vertebral bodies Zygapophyseal joint capsules Synovial linings Muscles

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