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MSK 2 > Exam 2: TMJ > Flashcards

Exam 2: TMJ Flashcards

1
Q

what is the function of the lateral temporal mandibular ligament

A

prevent excessive A and P, and lateral movement of the jaw

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2
Q

what is the supsension quality of the lateral mandibular ligament

A

this is the main supension ligament during opening of the jaw

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3
Q

what kind of joint is the jaw

A

hinge joint

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4
Q

what are the medial ligaments

A

sphenomandibular ligament and stylomandibular ligament

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5
Q

function of the sphenomandibular ligament

A

suspends the mouth during wide opening

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6
Q

function of the stylomandibular

A

acts a stop to extreme opening

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7
Q

what is the mouth disc made out of

A

fibrocartilage

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8
Q

Does the disc have nerve or art

A

no it is avascular and aneural

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9
Q

what is the retrodiscal tissue attached ant and post

A

the post capsule and the ant tympatic plate
- this prevents the disc from going to far anterior

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9
Q

what is the disc attached to medially and laterally

A

the condyle view the medial and lateral ligament

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10
Q

what are disc issue normally due to

A

stretching of retrodiscal tissue

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11
Q

what happens when we open the mouth

A

the disc moves forward with the condyle and creates stress on the retrodiscal tissue

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12
Q

what happens when we close the mouth

A

the retrodiscal tissue pulls the disc back to move with the condyle

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13
Q

where is the upper compartment

A

disk and mandibualr fossa

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14
Q

where is the lower compartment

A

disc and the condyle of the mandicular bone

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15
Q

what plane does the mouth move in for opening and closing

A

cornal
- plane passes through the condyles

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16
Q

phase 1 of opening

A

rot of the condyle in the lower compartment

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17
Q

pahse 2 of opening

A

translation of the disc and the condyle together in the upper compartment

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18
Q

closing and opening phases

A

close is the same as opening but opp

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19
Q

who much movement do we see with opening

A

40-50 mm

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20
Q

what kind of movement are mandibular protrusion and retrusion

A

translation movement

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21
Q

what comp does protrusion and retrusion occur in

A

upper comp

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22
Q

how much movement do we see with protrusion

A

6-9 mm

manible juts forward

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23
Q

how much movement do we see with retrusion

A

3 mm
mandible pulls back

24
Q

mandibular lateral deviation axises

A

vertical and horizontal axis
AP axis

25
Q

vertical axis for mandibular lateral deviation

A

spin around the isp condyle

translation of contra condyle

26
Q

how much movement do we see with mandibular lateral deviation

A

8 mm

27
Q

A-P axis mandibular lateral deviation

A

spin in the frontal plane of isp condyle

depression of contra condyle

28
Q

what motions are see in chewing and griinding

A

all of the motions

29
Q

what do we use to open our mouth

A

grvaity, inf lateral pyertiod, ant epigastric

30
Q

mouth closers

A

temporalis, masseter, medial pyterygoid,

sup lat pyertiod - keeps disc sligtly forward during closing

31
Q

right laterl deviator muslces

A

left medial and lat ptyeriod

right post temporilis muscle

32
Q

left lat deviators

A

right medial and lat ptyeriod

left post temporilis muscle

33
Q

protruders

A

bilat infer ptyeroids

assisted by medial ptyeroids

34
Q

retruders

A

post temporalis muscle

post diagastric

deep masseter

35
Q

DDWOR

A

history of jaw locking or catching

36
Q

DDWR

A

opening or closing clicks
- disc displacement with reduction

37
Q

lateral pyter what is the cheif complaint if you see this issue

A

lateral face pain
- pain reproduced with resisted protrusion

38
Q

power stroke

A

forced closing of the mouth

39
Q

macrotrama TMD

A

fracture dislocation

40
Q

diseas and TMD

A

OA RA infections

41
Q

reffered pain TMD

A

referred pain around the eyes, ears, zygomatic arch, temple areas

42
Q

ear problem with TMD

A

tinnitus - ringing of the ears

43
Q

where do we palpate

A

lateral pole
behind lateral poles
along the lateral ligamament

44
Q

unilateral loading with gauze

A

gauze - distraction
non gauze - closing down

45
Q

what does no pain mean with compression

A

release means reliefs of compression

46
Q

what does pain with comrpession mean

A

the capsule is irritated from tensile loads

47
Q

anterior disc location that reduces - openeing

A

loud clicking during opening - this means the disc has relocated

48
Q

anterior disc location that reduces - closing

A

the disc has been displaced ant, condyles behind the disc

49
Q

anterior disc location that does not reduce general

A

no clicking - there are restriction during opening

may have a past history of clicking but this is gone now

50
Q

anterior disc location that does not reduce - what is the issue

A

restriction due to disc blocking translation

51
Q

TMJ capsular restrictions

A

deviation to the right with less opening

deviation to the right with protrusion

decrease L lat movements

there is not history of clicking

there is not snapping on the distraction of the joint

52
Q

TMJ subluxation

A

excessive opening

palpate lateral pole to see with they move to far forward

may hear a nosie at the start of close or end of large open

may be due to muscle imbalances

53
Q

what do we see with unilateral sublux

A

might see quick deviation to the contralateral side at the end of openeing

54
Q

translation occurs to soon with opening

A

jutting of the jaw forward with opening

may be due to muscle imbalances

55
Q

what to do with translation occuring to soon

A

focus on neuromuscluar reducation

56
Q

what does head posture have to do with TMD

A

forawrd head can effect the position of the manibles

may result in a bad bite pattern

57
Q

treatment for capsular restriction

A

aim to stretch the capsule

manually distract - joint play techniques

self distract techniques - gauze on molars

MSK 2 (15 decks)

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