For immediate self-care of a muscle strain, try the R.I.C.E. approach — rest, ice, compression, elevation: Rest. Avoid activities that cause pain, swelling or discomfort. But don't avoid all physical activity. Ice. Even if you're seeking medical help, ice the area immediately., A hamstring injury involves straining or pulling one of the hamstring muscles — the group of three muscles that run along the back of the thigh. Hamstring injuries often occur in people who play sports that involves sprinting with sudden stops and starts., The rotator cuff is a group of muscles and tendons that hold the shoulder joint in place and allow you to move your arm and shoulder. Problems occur when part of the rotator cuff becomes irritated or damaged. This can result in pain, weakness and reduced range of motion., It involves some muscles and the thin cover of tissue that holds muscles in place, called fascia. Pressure on these areas, called trigger points, causes pain. Sometimes, the pain is felt in other parts of the body., The difference between a sprain and a strain is that a sprain injures the bands of tissue that connect two bones together, while a strain involves an injury to a muscle or to the band of tissue that attaches a muscle to a bone., Among the most common injuries is a tendon rupture. If you have a ruptured tendon, you likely may feel a tearing sensation and actually hear a pop. This typically occurs around the elbow but sometimes at the shoulder. The muscle tends to ball up, forming a "Popeye" bulge that doesn't improve..