💡 Colles = distal radius, dinner fork deformity. Scaphoid = anatomical snuff box, AVN risk.

💡 Osteosarcoma = Sunburst appearance, Codman's triangle. Ewing's = Onion skin, t(11;22).

💡 OA = DIPs (Heberden), PIPs (Bouchard). RA = PIPs and MCPs, spares DIP.