Final answer:
A joint injury involving the stretching and tearing of ligaments is known as a sprain, while injury to tendons leading to inflammation is referred to as tendinitis. These injuries are common in physical activities and can require treatment like rest, ice, and physical therapy for recovery.
Step-by-step explanation:
A joint injury that involves stretching and tearing of ligaments and tendons is called a sprain and tendinitis, respectively. These are common injuries among those who participate in sports and other physical activities.
Sprains occur when ligaments, the tough bands of tissue connecting bones in a joint, are overstretched or torn. This often results in swelling and pain around the affected area. Common examples include ankle sprains, where the ligaments around the ankle become damaged due to twisting or excess inversion of the foot.
Tendinitis is the inflammation or irritation of a tendon, typically caused by overuse or repetitive motion. It results in pain and tenderness around a joint, and, in severe cases, the tendons can tear away from the bone, possibly requiring surgical repair.
Muscle strains are sometimes confused with sprains. A strain is an injury to the muscle fibers or tendons, which can also occur from overstretching but are distinct in that strains affect muscle or tendon rather than ligaments. Treatment for these injuries generally includes rest, ice compresses, and physical therapy.