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MBBS QUESTION #10151
Question 1
Articular (hyaline) cartilage covering the ends of bones in a synovial joint receives its nutrition mainly by which mechanism, explaining its poor healing capacity after injury?
  • Direct capillary blood supply within the cartilage
  • Diffusion of nutrients from synovial fluid✔️
  • Lymphatic drainage from the joint capsule
  • Blood supply from the adjacent periosteum
Correct Answer Explanation
Articular cartilage is avascular and aneural; chondrocytes depend on diffusion of nutrients from synovial fluid during joint loading/unloading cycles. This limited nutrient supply explains cartilage's poor intrinsic healing capacity, a key concept underlying the progression of osteoarthritis.