The numbness of the knee is considered to be caused by lumbar intervertebral disc herniation, synovitis of the knee joint, local nerve injury and other factors.
1. Lumbar intervertebral disc herniation: mainly lumbar intervertebral disc herniation compression of nerve-induced symptoms, which can be manifested as lumbar pain, if the compression of the sciatic nerve, it will cause pain in the lower limbs, manifested as radiating pain, and there will also be a numbness in the lower limbs of the knee joints or lower legs.
2. Knee synovitis: degenerative knee joint lesions and chronic strain injury can lead to knee synovitis, knee synovial macrophages and other inflammatory factors mediated inflammatory response, knee joint swelling and pain can occur, and some patients will have numbness in the knee at the beginning of the onset of the feeling of numbness.
3. Local nerve injury: if the knee area suffered trauma, can cause local nerve injury, resulting in local soft tissue numbness.
There may be other reasons for numbness in the knee, it is recommended that patients consult the hospital in a timely manner to clarify the causes for standardized treatment.