A sprain is an injury in a joint, caused by the ligament being stretched beyond its capacity. A muscular tear caused in the same manner is referred to as a strain. Ligaments are tough, fibrous tissues that connect bones to other bones. Sprains can occur in any joint but are most common in the ankle and wrist.
Symptoms:
- Swelling
- Bruising
- Decreased ability to move the limb
- If the ligament is ruptured, one may hear a popping sound
- Difficulty using the affected extremity
The diagnosis of sprain injury is made by a physical examination. In most cases an x-ray of the affected joint is obtained to ensure that there are no fractures. If a tear in the ligament is suspected, then an MRI is obtained. MRI is usually ordered after swelling has subsided and can readily identify the presence of a ligament injury.
