Sprains and Strains
Sprains and strains are probably the most common injuries. Although often used interchangeably in everyday usage and while similar in some respects, these injuries are actually different.
A sprain is an injury wherein there is stretching or tearing of a ligament, that is the tissue that connects bone to bone. A severely damaged ligament cause instability in a joint. Symptoms include pain, inflammation, and in some cases, the inability to move a limb. Sprains typically occur when a joint is forced beyond its normal range of motion, such as turning an ankle.
A strain is an injury wherein there is stretching or tearing of a muscle ur tendon, that is the tissue that connects muscle to bone. An acute (instant or recent) strain occurs at the junction where the muscle is becoming a tendon. These strains take place when a muscle is stretched and suddenly contracts, often while running or jumping, such as runners who strain their hamstrings. Many times the injury will occur suddenly while the runner is in full stride. Symptoms include pain, muscle spasm, loss of strength, and limited range of motion. Chronic (long-lasting) strains are injuries that gradually build up from overuse or repetitive stress, resulting in tendinitis (inflammation of a tendon).