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Anatomy: Muscles > Articulations > Flashcards

Flashcards in Articulations Deck (61):
1

What causes the clicking/popping noise in a TMJ disorder

alternations in the ligament that secures the joint leading ot progressive internal displacement of the articular disk

2

Why would one feel pain in paranasal sinus, tympanic membrane, oral cavity, eyes or teeth with a TMJ disorder

Because they are all innervated by CN V (trigeminal nerve)

3

Where would you find 2 synovial joints in the TMJ

the temporal bone and the articular disc, the articular disk and the mandible

4

What are the joints of the vertebral skeleton between the bodies of the vertebrae called?

amphiarthrotic symphyses

5

Why would you get shorter when you are dehydrated or as you get older?

Because the nucleus pulposus is composed of water to function as a shock absorber

6

Where is the most common area of back injuries?

Between L5/S1, from bending, twisting, etc (only need 51 pounds!)

7

What type of joint occurs between adjacent superior and inferior articular processes?

diarthrotic uniaxial gliding (planar) joints

8

Sternoclavicular joint?

diarthrotic synovial biaxial saddle joint

9

What could menigitis result in, in terms of the neck region?

nuchal rigidity

10

Typically, what hapens in dislocation of sternoclavicular joint?

clavicle comes on top of the manubrium

11

Acromioclavicular joint

uniaxial gliding joint

12

What joint is referenced in a shoulder separation?

acromioclavicular joint

13

What ligament is responsible for most of the stability of the AC joint?

the coracoclavicular ligament, if torn = AC separation

14

Glenohumeral joint

multiaxial ball-in-socket joint

15

What is the funciton of the glenoid labrum

to deepen the concavity of the glenoid cavity and help stabilize the head of the humerus

16

Why does the GH joint generally dislocate inferiorally/medially?

because there is no protection inferiorly and because anterior thorax muscles pull the humeral head

17

What muscles compose the "Rotator cuff"

infraspinatus, subscapularis, supraspinatus, teres minor

18

What can occur if one pulls suddenly of a child's pronated forearm?

subluxation of the head of the radias or "nursemaind's elbow"

19

Humeroulnar joint

uniaxial hinge joint

20

humeroradial joint

poorly classified, synovial joint

21

Why is the elbow an extremely stable joint?

1. the articular capsule is fairly thick and effective
2. bony surfaces of humerus and ulna interlock wll
3. multiple strong ligaments reinforce the capsule

22

What ligament is related to nursemaid's elbow?

anular ligament that binds head of the radius to proximal head of ulna

23

"Little League Elbow" is a result of what?

head of the raidus and capitulum forcefully collide repeatedly over long periods of time and the articular surface and bone ca be damaged

24

Why is the ulna not considered a part of the radiocarpal joint and what kind of joint is it?

because a fibrocartilaginous articular disc separates the small head of the ulna from the joint, diarthrotic synovial condyloid

25

radioulnar joint

diarthrotic synovial pivot joint

26

intercarpal joints

diarthrotic synovial planar joint

27

metacarpophalangeal joint

2-5= biaxial condyloid joints
1= uniaxial hinge joint

28

interphalangeal joint

uniaxial hinge joints

29

Why does a finger joint typically dislocate posteriorly?

because there is no ligamentous support on the posterior side of our digits

30

Sacroiliac joint

uniaxial diarthrotic planar joint- slightly moveable- only during pregnancy

31

acetabulofemoral joint

ball and socket joint

32

Why is the acetabulofemoral joint more stable than the glenohumeral?

Because the articular capsure is dense and strong and the bony architecture around in from the ossa coxae

33

What supplies most of the blood to the head and neck of the femur?

retinacular arteries that travel through the retinacular fibers, also the ligamentum teres which contains a small artery

34

What two articulations compose the knee joint?

the tibiofemoral joint and the patellofemoral joint

35

What type of femoral fracture is extracapsular and who does it usually affect/why?

intertrochantic, younger people, trauma

36

What type of femoral neck fracture is intracapsular and who does it affect/why? What can it lead to?

subcapital, elderly people with osteoporosis, avascular necrosis

37

What ligament prevents varus deviation?

LCL

38

What ligament prevents valgus deviation?

MCL

39

What ligament is hypothesized to work in conjunction with the ACL and what kind of force would injure it?

the anteriolateral ligament, hyperextension and twisting

40

What inner ligament is pulled taut in knee extension?

ACL

41

What inner ligament is pulled taut in knee flexion?

PCL

42

Where/what kind of graft can replace the ACL?

IT tissue from a cadaver (allograft) or patellar ligament from patient (autograft)

43

Severe valgus stress could rupture:

MCL, medial meniscus, ACL, lateral meniscus and PCL

44

Talocrural joint

highly modified hinge joint

45

What is the purpose of the medial and lateral malleoli?

Prevent side-to-side movement

46

What strong ligament prevents overeversion of the foot? What would likely injure before this ligament?

deltoid ligament, medial malleolus

47

What is the "unhappy triad"?

MCL, ACL and medial menisci all injured, usual a laterabl blow that forcibly abducts and laterally rotates

48

What kind of graft would remove heart valves from a pig and place in a human?

heterograft

49

What kind of graft is an exchange between identical twins?

Syngentic or isograft

50

What ligaments are commonly affected in excessive inversion of the foot?

anterior talofibular ligament and calcaneofibular ligament

51

What kind of sprain disrpts the interosseous membrane that helds the distal ends of the tibia and fibula together?

"high ankle sprain" or syndesmotic ankle sprain

52

What is happening in a "nutcracker" injury?

the os trigonum is crunched between the calcaneus and talus/tibia, usually in plantar flexion, common in ballet, soccer, other athletes

53

Intertarsal joint

uniaxial planar joint

54

metatarsophalangeal

biaxial condyloid joints

55

interphlanageal joints

uniaxial hinge joints

56

What type of arthritis involves crystals, uric acid, and starts in the big toe?

gout

57

What type of arthritis is chronic degenerative and what are the bone abrasions involved called?

osteoarthritis, eburnations

58

what type of arthritis is an autoimmune disorder and what is it called when the scar tissue ossifies and fuse bones together?

Rheumatoid, ankylosis

59

What kind ofendoscope diagnoses diseases of the joints?

arthroscope

60

What type of joint replacement takes the longest and requires 6-8 weeks of total immobilzation?

Total shoulder replacement

61

What was hypothesized to be the reason women felt relief from the RA symptoms during pregnancy?

genetic differences of fetal HLA proteins from maternal ones