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TMJ Examination: Difference between revisions
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#*C curve occurs due to hypomobility, the mandible deviates to the involved side, then returns to centre | #*C curve occurs due to hypomobility, the mandible deviates to the involved side, then returns to centre | ||
#*S curve occurs due to hypermobility as a result of poor neuromuscular control. | #*S curve occurs due to hypermobility as a result of poor neuromuscular control. | ||
==Palpation== | ==Palpation== | ||
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{What other joint or joint complex should you examine? | |||
|type="()"} | |||
-The shoulder | |||
+The neck | |||
||The TMJ and neck are highly linked. cervical extension causes jaw opening, while flexion causes jaw closing. There is a neural link between the upper c spine and the trigeminal ganglion (e.g. cervicogenic headaches) | |||
-The ACJ | |||
-The SCJ | |||
</quiz> | </quiz> | ||
[[Category:Head & Jaw]] | [[Category:Head & Jaw]] |
Revision as of 09:30, 28 June 2020
This article is a stub.
Anatomy
Inspection
- Jaw opening, normal is ~4-7cm, with a wide range of normal[1].
- Opening curves.
- C curve occurs due to hypomobility, the mandible deviates to the involved side, then returns to centre
- S curve occurs due to hypermobility as a result of poor neuromuscular control.
Palpation
- Coronoid Process: Begin with mouth closed, palpate inferior to the zygomatic bone. Ask the patient to open their mouth. If the coronoid process does not move forward to touch your finger then ask them to open further or adjust your finger location. Check all easily accessible coronoid aspects. Verbal cues are generally required for maintaining an open mouth. Palpation of the medial aspect can be accomplished intraorally if required.
- Retrodiscal space. Line your finger tips up of fingers 2 through 5. Palpate the right and left TMJ with the posterior finger at the tragus. Allow a slight inferior angle of finger alignment.
MCQs
- โ Zawawi KH, Al-Badawi EA, Lobo SL, Melis M, Mehta NR. An index for the measurement of normal maximum mouth opening. J Can Dent Assoc. 2003;69(11):737-741