Cramps, or muscle spasms, are involuntary contractions causing the muscles in the calf or foot to suddenly become hard, tight, and painful. Though generally harmless, muscle cramps can be painful and can make it temporarily impossible to use the affected muscle.
Equinus Contracture
Equinus contracture is a condition in which the upward bending motion of the ankle joint is limited, lacking the flexibility to lift the top of the foot.
Compartment Syndrome
Compartment syndrome occurs when excessive pressure builds up inside an enclosed muscle space in the body, most commonly after exercising.