One is the pain in the muscularis and ligaments of the waist. This kind of low back pain is often confined to the muscles of the original injury site and extends as far as the buttocks or thighs. Most of the reasons are muscle strain, strain caused by chronic fatigue, muscle stiffness and fibrosis. Muscle pain is manifested as pain caused by fatigue, swelling and pain caused by strain and contusion. Pain often occurs during or after rest, such as waking up in the morning or sleeping until midnight. Generally speaking, this kind of low back pain can still stand or walk like a normal person, but it will begin to appear when you are sedentary or overworked.
Another kind of low back pain is caused by the compression of the spine or spinal nerves. This kind of low back pain is mostly caused by the waist pulling the hips, thighs, calves and even toes, which occurs unilaterally and rarely on both sides at the same time. The feeling of pain is mostly pain in the waist, buttocks and thighs, and most of them are pain, weakness or numbness in legs and feet. Pain usually occurs after walking or standing 15 minutes, and the patient must find a place to sit down. There are spinal nerve branches extending on each side, and the size of intervertebral foramen space is fixed. When we stand, due to gravity and erector spinae contraction behind the spine, if the intervertebral foramen becomes smaller due to bone spurs or disc herniation, it will stimulate the spinal nerves.
Especially in the waist and sacrum, the nerve extending from the lumbosacral joint (between the five lumbar vertebrae and the sacrum) is the easiest to be compressed, accounting for about 70% of the spinal nerve compression. Symptoms other than lumbago and leg pain can cause abnormal sensation of numbness of superficial nerves in the affected calf and dorsum of foot, which makes people feel uncomfortable. When patients' toes are raised, it is difficult for their heels to touch the ground. If the nerve roots of the fourth and fifth vertebrae of the lumbar spine are pinched, the thumb, the second finger of the foot and the front of the tibia will feel abnormal numbness of the epidermis, making it difficult for patients to lift the toes of their heels, accounting for about 25%. Clinically, many patients have spinal nerve compression of the above two joints at the same time. If the nerve between the third and fourth lumbar vertebrae is compressed, there will be muscle atrophy of the thigh or numbness of the epidermal nerve in the front and inner thigh. The above diagnosis can be compared with the healthy side.