Spondylolisthesis

Isthmic spondylolisthesis is one of the six common types of this spinal condition. This particular type is present in a child (approximately 5 to 7 years of age); however, the symptoms do not typically develop until adulthood.

Isthmic Spondylolisthesis Definition

This condition occurs in the pars interarticularis part of your spine, which is a narrow area (isthmus) between the upper and lower articular processes. Isthmic spondylolisthesis is caused by healed or unhealed stress fractures that are surrounded by fibrous tissues. It occurs when the vertebra slips forward over the lower vertebra over a period of time.

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Degenerative spondylolisthesis is one of six types of this spinal condition. It occurs as a result of the general aging process; therefore, it is more often seen in the elderly than in young adults. While it is common for people over 50, it is even more likely to be seen in people over 65. Females will develop degenerative spondylolisthesis over males.

Degenerative Spondylolisthesis Definition

This is a spinal condition where a vertebra slips forward over the one below it. As your body ages, your bones, ligaments, and joints in the spine tend to become weak and are sometimes not able to support the spinal column in alignment.

This condition will usually occur in either the L4-L5 level of your lower spine, which is the most common location. It can also be present at the L3-L4 level. While it is a possibility that degenerative spondylolisthesis can be present in other levels, it is rare.

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