How does this work if this typically doesn't regrow cartilage?

How does this work if this typically doesn't regrow cartilage?
How does this work if this typically doesn't regrow cartilage?
How does this work if this typically doesn't regrow cartilage?
How does this work if this typically doesn't regrow cartilage?

meniscus,meniscus surgery,cartilage tear,regrow cartilage,acl tear,shoulder tear,labral tear,stem cells,stem cell,stem cell treatment,