![]() ![]() Recognised associations are many and include: Severe cases may respond to surgical spinal cord decompression and vertebral stabilization. Most cases of hemivertebrae have no or mild symptoms, so treatment is usually conservative. Signs include rear limb weakness or paralysis, urinary or fecal incontinence, and spinal pain. Neurologic signs result from severe angulation of the spine, narrowing of the spinal canal, instability of the spine, and luxation or fracture of the vertebrae. The most common location is the mid thoracic vertebrae, especially the eighth (T8). Hemivertebrae are wedge-shaped vertebrae and therefore can cause an angle in the spine (such as kyphosis, scoliosis, and lordosis).Īmong the congenital vertebral anomalies, hemivertebrae are the most likely to cause neurologic problems. The presence of a sixth vertebra in the space where five vertebrae normally reside also decreases the flexibility of the spine and increases the likelihood of injury. Additionally, if L6 fuses to another vertebra this is increasingly likely to cause lower back pain. This condition can usually be treated without surgery, injecting steroid medication at the pseudoarticulation instead. This L6-S1 joint creates additional motion, increasing the potential for motion-related stress and lower back pain/conditions. Sacralization of L6 means L6 attaches to S1 via a rudimentary joint. In sacralization, the L5-S1 intervertebral disc may be thin and narrow. Low back pain in these cases most likely occurs due to biomechanics. Although sacralization may be a cause of low back pain, it is asymptomatic in many cases (especially bilateral type). These anomalies are observed at about 3.5 percent of people, and it is usually bilateral but can be unilateral or incomplete ( ipsilateral or contralateral rudimentary facets) as well. Sacralization of the fifth lumbar vertebra (or sacralization) is a congenital anomaly, in which the transverse process of the last lumbar vertebra (L5) fuses to the sacrum on one side or both, or to ilium, or both. Sacralization of the L5 vertebra is seen at the lower right of the image. ![]()
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