Epidemiology

Tendinopathy affects millions of people in athletic and occupational settings as well as the general population.[7][8][9] Because tendinopathy affects such a diverse population and can occur at different sites, the true incidence is unknown.

It is estimated that half of all sports injuries are secondary to overuse. Of these injuries, the muscle-tendon unit is the most commonly affected.[10] Approximately 10% of runners develop Achilles tendinopathy, which tends to affect men ages >30 years.[11] Patellar tendinopathy usually affects young adults in their teens to 30s, but can also occur in older individuals.[12] There is a 1% to 3% annual incidence of lateral epicondylitis, which affects men and women equally. It is more common in people ages >40 years.[13]

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