Joint Structure and Function Flashcards Preview

PT 506 Kinesio / Biomechanics > Joint Structure and Function > Flashcards

Flashcards in Joint Structure and Function Deck (60):
0

in a blank kinematic chain, blank joint segment is free to move while blank segment provides stability

open, distal, proximal

1

in a blank kinematic chain, blank joint segment is fixed from moving while blank segments are allowed to move on this stable blank segment

closed, distal, proximal, distal

2

structure of human joints determines blank of the joint

function

3

development of all anatomical tissues also determined in part by the blank applied to the tissues

stresses

4

agonist (effort) is always the blank vector in a fbd

longest

5

stability joints usually have blank designs with blank degrees of freedom

simple, one

6

most joint must serve a blank and blank function to different degrees

mobility, stability

7

two broad categories of arthroses (joints)

synarthroses, diarthroses

8

connections made via fibrous or cartilaginous connective tissue in these joints

synarthroses

9

three fibrous joints

syndesmoses, gomphoses, sutures

10

fibrous joint where bone is united via collagenous sutural ligament or membrane

sutures

11

sutures only occur in blank

skull

12

fibrous joint where surfaces are a peg in a whole.... only teeth

gomphoses

13

fibrous joint where bones joined directly by an interosseous ligament

syndesmosis

14

two types of cartilaginous joints

symphyses, synchondreses

15

symphysis joint is a blank cartilaginous joint covered by thin blank of blank cartilage and directly jointed by fibrocartilage in the form of disks or pads

secondary, lamina, hyaline

16

synchondrosis is a blank cartilaginous joint where blank cartilage joins the surfaces and permits growth and forms a bond at the ossifying center

primary, hyaline

17

example of synchondrosis joint

1st rib and sternum

18

two types of synarthroses

fibrous, cartilaginous

19

joints where ends of bony components are free to move and no connective tissue directly attaches to bones but has a joint capsule

diarthroses

20

two layers of joint capsule

stratum fibrosum, stratum synovium

21

outer layer of joint capsule that is type 1 collagen and poorly vascularized but richly innervated

stratum fibrosum

22

inner layer of joint capsule that has synovial fluid production and is highly vascularized and richly innervated

stratum synovium

23

thin film that covers inner layer of joint capsule (stratum synovium) and Articular cartilage

synovial fluid

24

synovial fluid reduced friction between blank

bony surfaces

25

synovial fluid nourishes the blank

articular cartilage

26

synovial fluid is like blood plasma but it has these two things

hyaluronic acid, lubricin (glycoprotein)

27

responsible for viscosity of synovial fluid and reduction of friction

hyaluronic acid

28

responsible for cartilage on cartilage lubrication in synovial fluid

lubricin

29

viscosity varies blank with joint velocity or rate of shear

inversely

30

property of synovial fluid that means semi solid fluid state

thixotropic

31

rapid joint movement means viscosity blank

decreases

32

slow movement means blank viscosity which causes blank resistance to motion

increases, more

33

1 plane of motion around 1 axis

uniaxial

34

two types of uniaxial diarthrodial joints

hinge, trochoid (pivot)

35

trochoid means blank joint

pivot

36

pivot joint example

median atlantoaxial joint

37

any joint with one surface convex while the other is concave

ovoid

38

hinge joint example

humeroulnar

39

two biaxial diarthrodial joints

condyloid, saddle

40

concave and convex surfaces slide over one another in 2 directions

condyloid joints

41

condyloid joint example

metacarpalphalangeal joint

42

joint where each joint surface is both convex in 1 plane and concave the other

saddle joint

43

saddle joint example

sc joint

44

two triaxial diarthrodial joints

plane, ball and socket

45

triaxial joint that is a variety of surface configurations and permit gliding between two or more bones

plane

46

convex ball and concave socket joint

ball and socket

47

motions of most synovial joints are typically measured with a blank

goniometer

48

movement of joint surfaces in relation to one another

arthrokinematics

49

arthrokinematics is looked at in pt by joint blank assessment

play

50

occurs in the direction of osteokinematic motion

roll

51

skate on ice or intervertebral facet joint motion osteokinematic motion

glide

52

marble spinning on table/radius on capitulum osteokinematic motion

spin

53

when a blank articular surface moves on a relatively stationary blank surface, blank movement of the surface occur in the same direction

concave, convex, roll and slide

54

joint in the frontal plane... the only motion that occurs are blank

superior/inferior

55

joint moving in the sagittal plane can be described as blank

anterior/posterior

56

joint moving in transverse plane motions are blank

medial/lateral

58

convex surface moving on a concave surface - roll and slide occur in blank

opposite direction

59

component of muscle force that is the part of a force that produces motion and is the y vector

rotary

60

part of a force that approximates the joint surfaces and is the x component

compressive