In response to a question about rebuilding cartilage…

[Talitha] For more severe aches, pains and stiffness (including sports injuries) or injuries affecting the cartilage and ligaments: Rhus tox 1M every few hours until very much better.
Injuries to the bone, cartilage and tendons, bruised like soreness and injury to deep muscle tissue: Ruta Grav 6c or 30c as needed. Also consider Nat Carb 30c and Arnica 30c.

[Mick] The protocol  for rebuilding bone or cartilage anywhere in the body is Symphytum 200C and Calc phos 3X, taken together or separately, twice daily.