Joints Flashcards

(83 cards)

1
Q

component of the joints

A

bone, cartilage, ligament, tendon, fascia

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2
Q

what is the function joints

A

Provides stability
Permits motion

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3
Q

what is a joint

A

The part of the body where two or more bones meet to allow movement

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4
Q

Synarthroses are what type of joint

A

more stable of joints

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5
Q

Synarthroses two types

A

Fibrous Joints
Cartilaginous Joints

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6
Q

Fibrous Joints types

A

sutures, syndesmoses, gomphoses

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7
Q

Cartilaginous Joints types

A

symphyses, synchondroses

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8
Q

Diarthroses are what type of joint

A

freely moveable joints, normally call synovial

Most joints in the body

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9
Q

Diarthroses types

A

Synovial Joints

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10
Q

Sutures

A

Synarthroses - fibrous joint

Limited to skull

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11
Q

skull bone separation during growth

A

bones are separated by zone of CT - sutural ligament

originally connect by connective tissue

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12
Q

what does the skull look like when growth is complete

A

osteogenic cells create rigid synostosis (2nd or 3rd decade of life)

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13
Q

Syndesmoses

A

Ligament between the bones - an immovable joint in which bones are joined by connective tissue

Synarthroses - fibrous

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14
Q

Syndesmoses joint degree of movement

A

Allows small degree of movement

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15
Q

example of Syndesmoses

A

Distal tibiofibular jt

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16
Q

where is Syndesmoses normally found

A

in the limbs

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17
Q

Symphyses type of joint

A

Synarthroses
Cartilaginous Joints

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18
Q

Symphyses motion

A

Ltd motion allowed by deformation of connecting fibrocartilaginous disc

Amount of motion depends on thickness of disc - thicker less movment

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19
Q

Examples of Symphyses

A

IV jt, pubic symphysis, manubriosternal jt

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20
Q

Synchondroses type of joint

A

Synarthroses. Cartilaginous Joints

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21
Q

what is Synchondroses

A

Temporary cartilaginous (hyaline) joints between diaphysis and epiphysis

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22
Q

Synchondroses seen in what pop

A

Only in kids not in adults, the ​line separating the p-line

Goes away when the growth plate Fuses

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23
Q

Fibrous Capsule role

A

Forms link between bones

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24
Q

Fibrous Capsule is continuous with

A

adjacent periosteum

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25
what is the Fibrous Capsule mad up of
Interlacing bundles of collagen
26
what are Capsular ligaments
Thickenings where fiber bundles run parallel to each other present within the capsules of the joints serve to enhance the strength of the articular capsule.
27
Joint capsule two parts
Outer fibrous (capsule) layer or membrane Inner synovial layer or membrane.
28
Subchondral Bone Plate location
Lies beneath articular cartilage Consists of layer of underlying trabecular bone order: articular cartilage subchondral bone trabecular bone
29
Subchondral Bone Plate activity
Metabolically active with abundant blood supply
30
where the periosteum
- Periosteum everywhere expect articulation
31
Synovial Membrane composed of
Loose vascular CT
32
where is the Synovial Membrane
Lines on the non-articular parts of synovial joints Adherent to capsule and non-articular bone
33
purposes of Synovial Membrane
Secretes and absorbs synovial fluid Synovial fluid has nutrition for tissues in the joint
34
Bare areas
Where synovial membrane is in direct contact with intra-articular bone not covered w/hyaline cartilage
35
what is the problem with bare areas
Predisposed for bone erosion from synovial disease
36
do all joints have fat pads
- Some not all joints have fat pads
37
Fat pads
Accumulations of adipose tissue closely associated with synovial membranes forming flexible cushions and filling in joint spaces
38
location of fat pads normally
Normally under the tendon so muscle can move w/o being uncomfortable
39
Synovial Fluid function
Functions to provide liquid environment with narrow pH range for joint surfaces Nutritive source for articular cartilage, discs and menisci Lubricant to increase joint efficiency and reduce surface erosion overall: Provides lubrication and nutrition
40
Articular Discs or Menisci
Fibrocartilage structures intervening between articulating structures where congruity is low
41
Articular Discs or Menisci example
EX: the knee joint, improve connection between bony surfaces
42
Articular Discs/Menisci function
Assist in shock absorption Improve fit between joint surfaces Distribute weight over larger surface Protect edges of articular surfaces Limit translational movements Facilitate rolling movements
43
Labrum made out of what
Fibrocartilaginous
44
Labrum local
Forms annular lip Attached at margins of articular surfaces in some synovial jts (glenoid, acetabular)
45
what is the labrum
rim of soft tissue or fibrous cartilage that surrounds the socket of a ball and socket joint to make it more stable Deepens sockets and increases area of contact between articular surfaces
46
is the labrum compressed
no
47
how do classify joints
Based on shapes of articular surfaces and on degrees of freedom of movement (uniaxial, biaxial, multiaxial)
48
Plane Joints
Apposition of fairly flat articular surfaces
49
Plane Joints movement
translatory motion Translatory-gliding/Sliding not a lot of movement seen
50
plane joints DF
1 Uni-axial: gliding (sliding can only occur in on direction)
51
example of plane joints
Acromioclavicular jt Proximal tib-fib jt Intermetatarsal jts Some intercarpal jts
52
Hinge Joints DF
1 Uniaxial - primarily mvmt in one plane
53
hinge joint ligaments
Ligaments on both sides restricting movement
54
hinge joint examples
Elbow (humeroulnar) jt Interphalangeal jts
55
Bicondylar Joints DF
biaxial
56
Bicondylar Joints movement
Primarily mvmt in 1 plane Limited rotation about a 2nd axis set at 90 degrees to the first axis
57
Bicondylar Joints make up
2 convex condyles articulate with 2 concave surfaces
58
Examples of Bicondylar Joints
Knee jt Temporomandibular jts
59
Saddle Joints other name
Sellar
60
Saddle Joints DF
Biaxial
61
Saddle Joints movement
Amount of motion in each plane is similar - biaxial Primary mvmts occur in 2 planes set at right angles to each other
62
Saddle Joints made up of
Saddle Joints allows similar amount of motion in both planes
63
combination of movements in saddle joints
Combination = circumduction
64
saddle joint examples
1st carpometacarpal jt Talocrural jt
65
Condyloid Joints another name
Ellipsoid
66
Condyloid Joints DF
Biaxial Mvmt about two axes set at right angles to each other
67
Condyloid Joints make up
Oval convex male surface & elliptical female concavity
68
examples of Condyloid Joints
Radiocarpal jt Metacarpophalangeal jts
69
Condyloid Joints joint movement
Combined mvmt is circumduction
70
Ball & Socket Joints another name
Spheroidal
71
ball and socket DF
Multiaxial - 3 degrees of freedom Flexion/extension Adduction/abduction Rotation
72
Ball & Socket Joints components
Convex globular head articulates with cup-like concavity
73
Ball & Socket Joints examples
Shoulder jt Hip jt
74
Pivot Joints anther name
Trochoid
75
Pivot Joints DF
Uniaxial
76
Pivot Joints compents
Central bony pivot surrounded by osteo-ligamentous ring
77
rotation in the pivot joint
Rotation about a longitudinal axis
78
Examples of Pivot Joints
Proximal radioulnar jt Atlantoaxial jt
79
what is Osteoarthritis
Degenerative Joint Disease the cartilage within a joint begins to break down and the underlying bone begins to change.
80
Osteoarthritis
Asymmetrical distribution Loss of single compartment joint space Osteophytes Subchondral sclerosis Subchondral cysts Intra-articular loose bodies Articular deformity
81
Osteophytes
bony lumps (bone spurs) that grow on the bones of the spine or around the joints.
82
inflammatory joint disease - types
rheumatoid and autoimmune disease
83
inflammatory joint disease characteristics
bilateral soft tissue swelling - edema bone erosion juxta- articular OP seen in younger populations