Possible Clues:

• Knee-cap
• According to New Scientist in July this year, this bone is present in the legs of frogs
• A pallet (anag.)
• Joint cover obtained from Indian city?
• This can be spread all over bone
• Cap-shaped bone
• Bone tossed initially into Spanish dish
• Human bone that whales lack
• A ligament connects it to the tibia
• Bone found in Indian city?