What characterizes a Grade I sprain?

A Grade I sprain is characterized by the ligaments being slightly stretched. In this case, the individual may experience mild pain, swelling, and tenderness, but the integrity of the ligament is still largely maintained. This means that while there is some degree of overstretching, there is no significant damage or tearing of the fibers. As a result, the joint remains stable, and normal function is usually minimally affected.

In contrast, a Grade II sprain involves partial tearing of the ligament, causing more pronounced instability and pain. A Grade III sprain represents a complete tear, which leads to significant joint instability and often requires surgical intervention. No injury, on the other hand, suggests that there is no damage to the ligaments, which does not fall within the classification of a Grade I sprain.