Is there anything i can do about cartilage problems?

Repair: Depends on which type and what joint. Meniscus cartilages can be repaired or replaced, articular cartilage can be grafted with a paste graft technique if worn down to bone or smoothed surgically.

Not enough info: It depends on the joint involved, the specific area of injury in that joint and the severity of the injury. You need to provide more specific information if you want an answer. If you are concerned, see an orthopedist.