Temporomandibular Joint. Flashcards
1
Q
What type of joint is the TMJ?
A
Synovial hinge-joint.
2
Q
What divides the TMJ?
A
Fibrocartilaginous disc.
3
Q
Describe conditions that involve the TMJ.
A
- TMJ disorder: pain referring to the ear, jaw and lateral side of the head.
- TMJ dislocation.
- Arthritis.
4
Q
What nerve innervates the TMJ?
A
Auriculotemporal Nerve.
5
Q
How is the joint capsule stabilised?
A
Extracapsular Ligament.
6
Q
Describe the initial opening of the jaw.
A
Depression of the mandible is by the hinge (rotational) action in the inferior half of the joint cavity.
7
Q
Describe opening the jaw wider.
A
Condyle glide forward over the articular tubercle, occurring in the superior half of the joint cavity.
8
Q
What movements are required for retraction and protraction of the mandible.
A
Superior half of the joint cavity.
9
Q
What does the condyle not do in normal depression?
A
Condyle does not pass in front of the articular process.
