The Alfredson protocol is a treatment for Achilles tendonitis that involves repeated eccentric heel drop exercises. In this exercise, the heel is slowly lowered off a step while the toes stay on the ...

When Hakan Alfredson, an orthopedic surgeon and professor of sports medicine in Sweden, developed painful Achilles tendon problems in the mid-1990s, he asked his boss to book him in for surgery. His ...