The patient feels a sudden pain in the lower back while twisting, pushing or pulling. At first, it may be possible to continue the activity. But after two to three hours, bleeding in the muscles stretches, which causes "micro tears" in the muscle and tendons.
The spasm that results causes severe back pain that gets worse with any movement of the back. The patient usually prefers to lie still, curled up with the knees bent and the spine arched forward.
Causes and Risk Factors
Spasms usually happen when a muscle is swollen and tender (inflamed) or strained. Any great force can cause a micro tear in the muscles and tendons of the lower back. This injury commonly occurs in sports such as weightlifting, football, basketball, baseball or golf that require pushing or pulling or sudden twisting of the back.
The risk of back spasm is greater in people with:
- A pelvis that tips forward more than normal
- Any back weakness such as arthritis, spondylolysis, spondylolisthesis, disc rupture or a herniated disc, spinal stenosis or a tumor
- Swayback (Lordosis)
- Tight hamstrings
- Weak or inflexible muscles along the spine
- Weak stomach muscles
- Dehydration, electrolyte imbalance