What is the cause of lumbar sciatica

Lumbar sciatica is also a common clinical symptom. Many patients who seek medical treatment only rush to seek medical treatment and medicine when the pain seriously affects their lives. It is recommended that patients pay more attention to their health status in daily life. If you feel lumbar sciatica, it is best to seek medical treatment as soon as possible to find out the cause and receive symptomatic treatment as soon as possible.

There are many causes of sciatica in the lower back. The sciatica in the vast majority of patients is secondary to the stimulation, compression and damage to the sciatic nerve caused by lesions in the local sciatic nerve and surrounding structures, which is called secondary sciatica; a few are primary, namely sciatica.

Lumbar disc herniation causing sciatica in the lower back

This is the most common cause of sciatica, which often occurs at L4-5 and L5-S1. About 1/3 of cases have a history of acute lumbar trauma. Most patients are between 20 and 40 years old. The clinical characteristics are low back pain for several weeks or months, and then sciatica in one lower limb. In addition to the general symptoms of sciatica, physical examination also showed tension in the back muscles, limited lumbar movement, scoliosis, and tenderness of the spinous processes at the affected area.

Lumbar sciatica caused by lumbar osteoarthritis

It is more common in people over 40 years old, with a subacute to chronic onset, and most have a history of long-term low back pain, difficulty standing up after sitting for a long time, and difficulty sitting down after standing for a long time. Clinically, it can manifest as sciatica on one or both sides and low back symptoms.

Congenital malformation of the lumbar sacral spine causes sciatica in the lower back

Lumbar sacralization, sacral lumbarization, and occult spina bifida. The latter, in addition to sciatica, often has a history of enuresis. Physical examination often shows foot deformities and abnormalities of the lumbar and sacral skin, such as the small depression behind the anus and small hemangiomas on the midline of the sacrum. This often objectively and accurately indicates the area where the vertebral lamina has not healed.

Sacroiliitis causing sciatica in the lower back

Common causes include rheumatoid and tuberculous lesions. When there is exudation and destruction of the joint capsule, it will stimulate the L4-5 nerve trunks, and some patients may have symptoms of sciatica.