Sprain refers to injuries of ligaments that hold the bones together at the joint. Strain refers to injuries of a muscle or tendon. Tendon connects muscles and bones. Strains and sprains are the most common injuries occurring to athletes and anyone everyday. Sprains most likely happen at the ankles, wrists, and knees including Anterior Cruciate Ligament (ACL)/Medial Collateral Ligament (MCL). Strains occur most often in the muscles and tendons of the legs and back. Hamstring pulls, groin pulls, and sore back muscles are common forms of strain.
1) A first-degree sprain or muscle strain is the least severe damage with stretching of ligaments or muscle fibers. Pain and swelling are minimal. Range of motion usually is not affected to any important degree. First-degree muscle strains, ankle sprains and other sprains in acute conditions can be healed in less than 2 days or even overnight with treatment of a single FASTT Patch applied to the injured area.