Why is an elaborate system of canals needed in bone more than cartilage?

An elaborate system of canals is needed in bone more than in cartilage because bone is a highly vascularized tissue that requires a constant supply of nutrients and oxygen. The canals, including Haversian canals, facilitate the transport of blood vessels and nerves throughout the dense bone matrix, supporting its metabolic activity and facilitating the repair and remodeling processes. In contrast, cartilage is avascular and relies on diffusion for nutrient and waste exchange, making a complex canal system unnecessary.