What factor does not contribute to the strength and stability of a synovial joint?

Synovial fluid does not contribute to the strength and stability of a synovial joint

Explanation:

This fluid is found in the cavity of joints. It has egg white consistency, it reduces the friction by lubricating the articulate cartilage during the movement, to provide smooth movement.

During arthritis and gout, the fluid gets reduced and leads to pain during movement of joints. In either end this fluid provides the lubrication. This also provides important nutrients. The synovial joints lack blood vessels. Only nutrients and oxygen are supplied to the joint from the fluid.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.