Articular cartilage lacks blood vessels, nerves, and lymphatics, so it cannot receive direct blood flow. Instead, chondrocytes rely primarily on nutrient diffusion from the surrounding synovial fluid, supplemented by minor diffusion from subchondral bone vessels. Movement and weight-bearing create dynamic mechanical pressure, acting like a pump. Compressive forces push waste products out, and relieving pressure allows oxygen and nutrients to flow back in, maintaining cartilage homeostasis and preventing degeneration.