TMJ

Question 1

Anatomy of TMJ

Answer 1

Condyle

Glenoid Fossa

Articular Eminence

• Interarticular disc

Question 2

what divides joint cavity in two

Answer 2

interarticular disc

Question 3

Retrodiscal laminae attaches to disc

Answer 3

posteriorly

Question 4

Retrodiscal Laminae prevents disc from translating

Answer 4

anteriorly

Question 5

Lateral Pterygoid - superior and inferior heads
Superior head attaches to

Answer 5

disc

Question 6

lateral pterygoid prevents

Answer 6

posterior translation

Question 7

Lateral Ligament

Answer 7

deep horizontal fibers

superficial oblique fibers

Question 8

Joint capsule made of

Answer 8

fibrous CT

Question 9

Joint capsule - Superior attachment to rim of

Answer 9

Temporal articular surfaces

Question 10

Inferior joint capsule attaches to

Answer 10

condylar neck

Question 11

Joint caosule
Medial and lateral attachments only in inferior joint space to

Answer 11

medial and lateral poles

Question 12

Lateral capsule becomes

Answer 12

TMJ ligament

Question 13

• Anterior capsule blends with lower head of

Answer 13

External (superior) pterygoid and superior disc

Question 14

Posterior capsule attaches near

Answer 14

Post glenoid spine

Question 15

Lateral Temporal Mandibular Ligament prevents excessive

Answer 15

A-P and lateral movements

Question 16

Lateral Temporal Mandibular Ligament main suspension ligament during

Answer 16

moderate opening

Question 17

Temporomandibular Ligament

Answer 17

Outer oblique

Inner horizontal

Question 18

Stylomandibular ligament limits excessive

Answer 18

protrusion

Question 19

Stylomandibular ligament attaches from Styloid process of temporal bone to

Answer 19

posterior aspect of mandible

Question 20

Stylomandibular ligament acts as a stop to

Answer 20

extreme opening

Question 21

Sphenomandibular Ligament limits

Answer 21

inferior displacement

Question 22

Sphenomandibular Ligament superior attachment to angular spine of

Answer 22

sphenoid bone

Question 23

Sphenomandibular Ligament inferior attachment on

Answer 23

lingual of mandibular foramen

Question 24

Sphenomandibular Ligament suspends mandible during

Answer 24

wide opening

Question 25

Posterior superior disc attaches to

Answer 25

Superior lamina or stratum

Question 26

Posterior Inferior disc attaches to

Answer 26

Inferior lamina or stratum

Question 27

Anterior attachment to capsule and superior fibers of the

Answer 27

Superior lateral pterygoid

Question 28

articular disc attached to medial and lateral poles by

Answer 28

Medial and lateral collateral ligaments

Question 29

Articular disc attachment restricts movement

Answer 29

medially and laterally

Question 30

Articular disc attaches to capsule

Answer 30

anteriorly and posteriorly

Question 31

Commonly seen
disc pushed _______
Retrodiscal lamina gets ______ and causes pain

Answer 31

anteriorly
pinched

Question 32

Retrodiscal lamina attaches to posterior capsule and

Answer 32

anterior tympanic plate

Question 33

Superior belly of lateral pterygoid attaches

Answer 33

anteriorly to disc

Question 34

superior belly of lateral pterygoid controls

Answer 34

posterior movement during mouth closing

Question 35

Retro-discal tissue attaches to

Answer 35

Posterior capsule and to anterior tympanic plate

Question 36

Upper Compartment

Answer 36

disc and mandibular fossa

Question 37

Lower compartment

Answer 37

disc and condyle of mandibular bone

Question 38

coronal axis passes through

Answer 38

the condyles

Question 39

Lower compartment rolls ______ glides ______

Answer 39

posteriorly, anteriorly

Question 40

Opening and closing occurs in two phases

Answer 40

Phase I: Early
Phase II: Late