english: And then for the damaged arthritis on the surface, we did a stem cell paste graft, which we designed in 1991, to regrow that articular cartilage surface and give it back a smooth surface there.
non_english: Kako bismo rešili problem artritisa na površini, odradili smo transplant matičnim ćelijama, koji smo dizajnirali 1991. kako bismo regenerisali hrskavicu na površini zgloba i ponovo uspostavili glatku površinu.