Spondylolisthesis is a relative frequent condition that causes spine instability, occurring when one vertebra slides forward over the vertebra below it.
There are several types or causes of spondylolisthesis, being the main ones Isthmic Spondylolistheses and Degenerative Spondylolisthesis.
In some cases, this may lead to a spinal cord or nerve roots being compressed, causing back pain and numbness or weakness in one or both legs.
Possible related devices:
(This mention is purely informative and according to the manufacturer's instructions. It should always be subjected to a proper diagnosis and medical decision.)