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Congenital for Spondylolysis or Spondylolisthesis

In Spondylolisthesis with a significant slip, a step-off at the lumbosacral junction is palpable, motion of the lumbar spine is restricted, and hamstring tightness is evident on straight leg raising. As the vertebral body displaces anteriorly, the individual assumes a lordotic posture above the level of the slip to compensate for the displacement. Adults may have objective signs of nerve root compression, such as motor weakness, reflex change, or sensory deficit. These signs are seldom seen in children.

Spondylolysis, in most cases, is congenital.

Signs/symptoms of Spondylolisthesis and/or Spondylolysis at the time of the repetitive trauma, or within 2 to 3 days of cessation of the trauma;

Spondylolysis and Spondylolisthesis - Spine-Health

Repetitive trauma in clinical onset or aggravation of Spondylolisthesis and/or Spondylolysis

For posterior spinal decompression surgery to cause Spondylolysis or Spondylolisthesis, the surgery may occur any time before clinical onset of either condition.

Posterior spinal decompression surgery, at the level of the involved vertebra, prior to clinical onset or aggravation of Spondylolysis or Spondylolisthesis

What Is the Pars Defect of the Lumbar Spine

Posterior spinal fusion means a surgical procedure involving immobilization of the posterior elements of two or more vertebrae by the use of bone grafting, in the absence of immobilization of the lateral elements, of the same vertebrae. This type of surgery produces an abnormality in the functional loading of the adjacent vertebrae, and can result in either Spondylolysis or Spondylolisthesis.

Here at the London Pain Clinic we understand all these factors – and we account for them every single day in our practice. Home to several of the UK’s most respected Pain Medicine Consultants, the London Pain Clinic is the one-stop practice for patients suffering from chronic pain.

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Spondylolysis and Spondylolisthesis - London Pain Clinic

Approximately 90% of all spondylolytic spondylolistheses involve the 5th lumbar vertebra. 5% at L4, 3% at L1 L2 and L3, and 2% at C5 C6 and C7.

Spondylolysis and Spondylolisthesis - OrthoInfo - AAOS

In the white population there is a 5 -7% prevalence of pars defects with a male to female ratio of 2 to 1. In the black populations of South Africa there is a 2.4% incidence of a pars defect. In Alaskan Eskimos there is a 28-40% incidence of pars defects (? carrying upright in a papoose puts increased strain on the pars interarticularis).

Have A Pars Defect at L4-L5? It Might Be Spondylolisthesis

Spondylolysis is an interruption of the pars interarticularis, this can either be unilateral or bilateral. Spondylolisthesis: an anterior displacement of a vertebral body in relationship to the segment immediately below, this can occur with or without a defect in the pars interarticularis.

Spondylolysis & Spondylolisthesis - USC Spine Center

In patients with a pars defect there is a high incidence of spina bifida occulta, almost 13 fold. The spinal defect does not necessarily occur at the level of the pars defect. The hypoplastic and asymmetric facets that occur with spina bifida occulta are thought to increase the stress at the pars interarticularis thus predisposing to a defect.

Home / Conditions Treated / Spondylolysis & Spondylolisthesis

There is not a lot of evidence to support a congenital aetiology based on the non union of two separate ossification centres in the pars interarticularis or a defect in cartilaginous development.

Spondylolisthesis, Pars Defect & Stress fracture

This is at the moment the most commonly proposed aetiological mechanism causing a pars defect. In an in vitro study on 28 human lumbar spines found that the pars interarticularis defect of the lumbar spine was related to hyperextention mechanical fatigue.

What Is A Pars Defect Of The Spine

Although this subtype has a strong hereditary tendency, it makes up only half of the dysplastic group. The elongated pars (subtype b) is believed to result from micro fractures that heal with an elongated pars rather than from a lytic lesion. Acute pars fractures (subtype c) always result from significant trauma; these are rare and most frequently occur with Spondylolysis rather than with Spondylolisthesis.

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