TMJ

Question 1

Hypomobility: ROM limitation & deviation observed?

Answer 1

Decreased opening on the same side

Question 2

Hypermobility: ROM limitation & deviation observed?

Answer 2

Increased opening on the opposite side

Question 3

Disc Displacement w/ Reduction: ROM limitation & deviation observed?

Answer 3

Clicking
No deviation

Question 4

Synovitis: ROM limitation & deviation observed?

Answer 4

Decreased opening
Pain & swelling
No deviation

Question 5

Capsulitis: ROM limitation & deviation observed?

Answer 5

Decreased opening on the same side
Pain

Question 6

Normal mouth opening ROM?

Answer 6

35-55mm

Question 7

Primary muscles of mastication

Answer 7

1. Masseter
2. Temporalis
3. Medial Pterygoid
4. Lateral Pterygoid

Question 8

Masseter action

Answer 8

Elevates, protrudes, & retracts mandible.

Question 9

Temporalis action

Answer 9

Elevates & retracts mandible.
Assists w/ side to side movement.

Question 10

Medial Pterygoid action

Answer 10

Elevates & protrudes mandible.
Assists w/ side to side movement.

Question 11

Lateral Pterygoid action

Answer 11

Depresses mandible.
Assists w/ side to side movement.

Question 12

Which muscle is likely involved with lockjaw?

Answer 12

Lateral Pterygoid (tight, spasms).