Pfft -- they're common among anyone over 30 who exercises!

> they're common among anyone over 30 who exercises

They shouldn't be. If someone has chronic tendon or joint issues, that's something to discuss with a doctor and a trainer.

It's very common when people start doing a new exercise regimen. Muscles can become significantly stronger on a timescale of months, while an equivalent increase in the strength of tendons happens on a timescale of a few years. Once somebody has a few years of training under their belt, muscle mass gains are way slower and the capacity of the ligaments will have caught up and these issues go away. However, with bodybuilders and strength athletes these problems can easily come back once anabolic steroids are involved and give big muscular gains without the same level of adaptations in connective tissues.

I think we are, and I'd presume that's why sports medicine centers are so common.