Cartilaginous fishes do not have bones, instead their bodies are supported by cartilage.

He injured the cartilage in his knee.

He lost his voice due to damage to the thyroid cartilage.

His articular cartilage has worn down due to age.

He injured the sesamoid cartilage in his foot.

He explained the structure of the arytenoid cartilage in the throat in detail.

His body is very healthy.

I will attend the meeting on his behalf.

I will attend the meeting in his place.