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When you lie down, the lumbar spine will make a sound. It's been years. ...
Isthmus is the abbreviation of isthmus fissure, also known as isthmus fissure, isthmus fissure. The fully developed spine of human body can be divided into vertebral body, pedicle, lamina, upper and lower articular processes, transverse processes and spinous processes. The narrow part between the upper and lower articular processes is called pedicle isthmus. If the bones of one or two isthmus are discontinuous, it is called isthmus fissure. Lumbar spondylolysis is one of the common causes of upper back pain in clinic. The basic pathological changes are isthmus bone fracture, loss of shear stress resistance of vertebral facet joints, lumbar instability and finally spondylolisthesis.
There are two reasons for this disease. One is congenital inheritance. In embryonic stage, the vertebral arch has not yet formed, and it is still separated at birth. After birth, about 1 ~ 2 years old, the vertebral arch began to unite. After 3 ~ 6 years old, the vertebral body fused with the vertebral arch nucleus. If in the process of development, the vertebral arch does not unite, leaving gaps and gaps, it becomes isthmus fissure.
Facet instability: the stability factors between spinal segments are composed of the following four aspects: the integrity of adjacent joints, including the facet joints of intervertebral disc and two pedicles; Static structures such as joint capsule, ligament and fascia are normal; Dynamic structure, that is, good muscle function; Hydraulic state of intervertebral disc. The disorder of any link will lead to the instability of lumbar spine to varying degrees. There will be symptoms such as snapping fingers and low back pain.
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