National Physical Therapy Examination (NPTE) Practice Exam

A patient with right temporomandibular joint tenderness and mandible deviation to the left might also exhibit which finding?

1. Abnormal jaw reflex

2. Indentation behind the left condyle

3. Paresthesia in the right facial nerve distribution

4. Hypermobility of the right temporomandibular joint

The correct answer is: Hypermobility of the right temporomandibular joint

In the context of a patient presenting with right temporomandibular joint (TMJ) tenderness and a deviation of the mandible to the left, hypermobility of the right temporomandibular joint can be a relevant finding. This condition often arises due to an instability in the joint or its supporting structures, which can lead to altered mechanics when the jaw is opened or closed. When the mandible deviates to one side (in this case to the left), it often suggests that the muscular and ligamentous tensions are imbalanced, which can result in one joint (the right) being more mobile or lax than the other. This hypermobility can lead to compensatory movements and alterations in jaw alignment, as the patient attempts to adapt to the discomfort or instability felt on the affected side. Recognizing hypermobility can help guide clinical interventions, such as stabilizing techniques or exercises aimed at improving control over the affected joint. Understanding the nature and mechanisms of TMJ disorders is essential for developing effective rehabilitation strategies.