Am currently suffering a torn medial calf muscle in my left leg, the tear being at the junction with my Achilles tendon - a very very painful experience which happened in 3 quick sequences of a loud Pop from my calf followed by a searing pain from heel to back of knee followed by feeling as if somweone had struck the back of my leg with an iron bar. It occurred last Thursday 28/7/05 during a gym training session (calf strengthening) on a rotary calf machine. Am now out of action for 4 to 6 weeks for full rehabilitation and recovery. If I may suggest for an excellent insight to the injury and superb advice insert into your internet Google Search 'Calf Muscle Injury' and you will find a number of websites that explain all. Good luck. Eric.