More severe strains may be caused by a complete tear of the muscle, which can lead to a loss of function. How long a calf strain lasts depends on the severity and location of the injury.

Sometimes strained muscles bleed, resulting in bruising around your calf that can extend to your ... cause the tendon fibers to break down and tear. Tears can lead to a dull ache or tenderness ...

Bayern Munich goalkeeper Manuel Neuer has torn a calf muscle, the club said on Thursday, after celebrating a goal in the 3-0 Champions League last-16 first-leg win over Bayer Leverkusen.