Calf Strain
A calf strain (torn calf muscle) occurs when part of the muscle of the lower leg (gastrocnemius or soleus) is pulled from the Achilles tendon. It is similar to an Achilles tendon tear or rupture, but occurs higher up in the back of the leg. A sign of a calf strain is similar to that of an
Achilles tendon rupture - you may think you've just been hit in the leg and hear a "pop." There is sudden pain at the back of the leg, pain, swelling or bruising in the calf muscle, and you have difficulty standing on the toes.