Final answer:
The non-working condyle performs a downward, forward, and medial movement which involves depression, protraction, and medial translation at condyloid joints like the temporomandibular joint (TMJ) during actions like chewing.
Step-by-step explanation:
The non-working condyle performs a downward, forward, and medial movement. In the context of jaw movements, this refers to the translation of the mandible when the mouth is opening. The working side (ipsilateral side to where the mandible moves laterally) condyle rotates, while the non-working side (contralateral side) condyle moves downwards, forwards, and medially, which is due to the combined actions of depression, protraction, and a slight medial translation.
This complex movement allows for actions such as chewing, which involve opening and side-to-side motions of the jaw. Such movements occur at condyloid joints, such as the temporomandibular joint (TMJ), which is capable of both rotational and translational movements.