Remember the TMjt biomechanics in openning and deviation and how the condyles moves in both rotational and translational planes.
If you have learnt maitland mobs, apply it to restore the biomechanics during opening and or deviation.
But be very careful and gentle ie grade 2- or less and short duration. They irritate easily. And always warn your patients abt pain after the session. If they do experience pain after the session, do it even gentler.
Ultrasound seems to help TMJt. They can be quite effective in reducing pain. Low intensity, pulsed (high frequency) and 3Mhz.
If it clicks like the earlier writer wrote, 2 things. If the disc reduces immediately, there would be pain often and pain relief would be good follow by movement re-education. If the disc does not reduce..... the disc is stuffed and the elastic tissue attaching has lost its elasticity.. Now, that is difficult to treat.. mainly pain relief..