A torn calf muscle is a break in one or more of the fibers in the calf muscle, the triceps surae. Also referred to as a "calf strain". This happens mainly during athletic activity and is favored by the absence of a proper warm-up. The pain is intense, sudden, and may be accompanied by the appearance of a hematoma (a "bruise"). The muscle can no longer be used, making it difficult or impossible to walk on. It is best to keep the leg stationary, to apply ice on the calf, and then follow-up with a treatment of analgesics while resting the muscle as much as possible.