How do ear ossicles help in amplification even when there is synovial fluid present?? The ear ossicles help in amplification of received sound (right?). We know that the joint between the three ear ossicles is synovial joint. Therefore, we have synovial fluid to prevent friction. This synovial fluid should also help to reduce the intensity of the sound that is transmitted forward. So how do we say that the ear ossicles help in amplifying the sound waves??