MUSCLE PHYSIOLOGY

Detailed explanation-1: -Grade I (mild) strains affect only a limited number of fibers in the muscle. Grade II (moderate) strains have nearly half of muscle fibers torn. Grade III (severe) strains represent the complete rupture of the muscle.

Detailed explanation-2: -In a mild strain, a torn muscle may feel slightly stiff, but still flexible enough for use. A severe muscle strain is when the muscle is severely torn. This results in pain and very limited movement. The symptoms of mild to moderate muscle strains usually go away within a few weeks.

Detailed explanation-3: -In severe strains, the muscle, tendon, or both are partially or completely ruptured, resulting in serious injury. Some muscle function will be lost with a moderate strain, in which the muscle, tendon, or both are overstretched and slightly torn. With a mild strain, the muscle or tendon is stretched or pulled slightly.

Detailed explanation-4: -Muscle strains are graded according to severity: 1st degree – mild over-stretching of a muscle. 2nd degree – moderate “over-stretching” of a muscle, some tearing of the fibers. 3rd degree – severe tearing or rupture of the muscle or tendon.

Detailed explanation-5: -Grade 1: Mild damage to individual muscle fibers (less than 5% of fibers) that causes minimal loss of strength and motion. Grade 2: More extensive damage with more muscle fibers involved. Grade 3: Complete rupture of a muscle or tendon. 19-Nov-2019