Lumbar straight up very difficult to bend very comfortable may be due to lumbar muscle strain, lumbar ligament strain, lumbar disc herniation.
1. Lumbar muscle strain: due to sedentary reasons such as lumbar muscle strain, the waist straight up will pull the damaged muscles, the waist bends so that the damaged muscles are in a relaxed state, there will be a waist straight up very difficult to bend very comfortable situation.
2. Lumbar ligament strain: when the lumbar ligament is strained due to sports and other reasons, the lumbar ligament will be pulled to the damaged ligament when the waist is straightened up, and the ligament’s pulling force is smaller when the waist is bent, which makes the situation that it is hard to straighten up the waist and very comfortable to bend.
3. Lumbar intervertebral disc herniation: lumbar intervertebral disc herniation will compress the local nerves, due to the lumbar straight up may lead to the lumbar force is greater and compression aggravation, bending the compression force is smaller, which will appear lumbar straight up is very difficult to bend very comfortable situation.
Appear waist straight up very difficult to bend very comfortable situation, there may be other reasons, to the hospital in a timely manner after the relevant examination, early treatment.