What is a sprain?
Sprains most commonly occur in the ankles, but they can affect any joint in the body. To understand this phenomenon, it is necessary to first understand the role of ligaments in the joints.
Ligaments are bands of fibrous connective tissue. They play an important role in joint mobility because they connect the bones together within the same joint and prevent wrong moves by stabilizing them. When a sprain occurs, there is stretching or tearing of the ligament in the affected joint. A sprain can also occur if there is tearing of muscle fibres.
For example, ankles, wrists, knees, lumbar (lower back) and shoulder muscles, to name a few, can all be sprained. The severity is determined by the degree of damage to the ligament.