Joint Structure and Function Flashcards Preview

PT 506 Kinesiology > Joint Structure and Function > Flashcards

Flashcards in Joint Structure and Function Deck (41):
1

Open Kinematic Chain

Distal joint segment is free to move while proximal segment provides stability

2

Closed Kinematic Chain

Distal joint segment is "fixed" from moving while proximal segments are allowed to move on stable distal segment

3

Stability Joints

Simple Designs

4

Mobility Joints

More complex joints

5

Transegrity

Joints that serve stability and mobility roles

6

Arthoses

1) Synarthroses/Synarthrodial (nonsynovial)
2) Diarthroses/Diarthrodial

7

Synarthroses

1) Fibrous
2) Cartilagenous Tissue

8

Diarthroses/Diarthrodial (synovial)

Friction free environment

9

Fibrous Joints

1) Sutures
2) Gomphoses
3) Syndesmoses

10

Sutures

Bone united by collagenous sutural ligament or membrane
Shapes interlock or overlap
Occurs only in the skull

11

Gomphosis

Surfaces adapted like a peg in hole
Connected via fibrous tissue
Teeth

12

Syndesmosis

Bones joined directly by an interosseous ligament or cord or aponeurotic membrane
Small amount of motion
EX: between radius and ulna

13

Cartilagenous Joints

1) Symphysis Joint
2) Synchondrosis Joint

14

Symphysis Joint

Secondary Joint
Covered by thin lamina of hyaline cartilage & directly joined by fibrocartilage in the form of disks or pads

15

Synchondrosis Joint

Primary Cartilagenous
Hyaline cartilage joins the surface
Forms a bond at ossifying centers
Permits growth, stability

16

Diarthoses

End of bony components are free to move
Synovial Joints

17

Synovial Joint Construction

Joint Capsule
Joint Cavity
Synovial tissue lining inner capsule face
Synovial fluid
Hyaline cartilage/AC lining contiguous bones

18

Joint Capsule

Ranges from thin, loose, redundant to thick and dense

19

Stratum Fibrosum

Outer Fibrous capsule composed of DCT
Type I collagen
Poorly vascularized and richly innervated

20

Stratum Synovium

Inner synovial fluid production
Highly vascularized and richly innervated

21

Synovial Fluid

Thin film that covers inner layer of joint capsule and AC
Reduces friction and provides nourishment
Composed of hyaluronic Acid and Lubricin

22

Hyaluronic Acid

Responsible for viscosity of fluid and reduction of friction

23

Lubricin

Responsible for cartilage on cartilage lubrication

24

Thixotropic Property

Semi-solid fluid state
Viscosity varies inversely with joint velocity or rate shear

25

Uniaxial diarthroses

1 plane of motion around 1 axis

26

Biaxial diarthroses

2 planes of motion around 2 axes

27

Triaxial diarthroses

3 planes of motion around 3 axis

28

Trochoid Joint

Pivot joints
Ring shaped component and other component rotates in the ring

29

Ovoid Joint

Any joint with one surface convex while the other is concave

30

Biaxial Diarthrodial Joints

Condyloid Joints
Saddle Joints

31

Multiaxial Joints

Plane Joints
Ball and Socked Joints

32

Osteokinematics

Movement of one bony shaft in relation to another in a particular plane

33

Arthrokinematics

Movement of joint surfaces in relation to each other
Accessory movements occur in combination with each other

34

Loss in arthrokinematics may ____

equal loss in gross osteokinematic ROM

35

Roll

Rolling ball, occurs in the direction of osteokinematic motion

36

Slide/Glide

Skate on ice or intervertebral facet joint motion; direction of motion dependent on joint structure

37

Spin

Marble spinning on a table; radius on capitulum

38

Concave-Convex Rule

When a concave articular surface moves on a stationary convex surface, roll and slide occur in the same direction

39

Concave-Convex Rule

Convex surface moving on a concave surface; roll and slide occur in opposite directions

Must have a force couple

40

Closed Vs Open Chain

Osteo and arthrokinematic movements are typically the same in open or closed chain; but the timing, sequence, or magnitude may be different

41

Reaction force

Produced within a passive structure to resist compressive or tensile forces and is a result of the structure of anatomical tissue