>>712632274
Depending on the joints it happens to, surgical intervention is common, but surgeons will generally avoid the hips because the femur joint is buried in tissue surgeons have to dig past without damaging too badly. It's generally not considered worth attempting invasive surgery there.

Dude had to manually grind his bones down against each other to free them of calcification and break the scar tissue around it. Horrific, agonising shit. Most people would just live with the decreased range of motion.