アキレス腱断裂
Most cases of Achilles tendon rupture are traumatic sports injuries. The average age of patients is 29–40 years with a male-to-female ratio of nearly 20:1. However, recent studies have shown that Achilles tendon ruptures are rising in all age demographics up to the sixth decade of life as remaining active has become popularized around the world. Direct steroid injections into the tendon have also been linked to rupture.