Unit 1 Joints Flashcards
1
Q
Classifications
A
- Fibrous
- Cartilaginous
- Synovial
2
Q
Fibrous Joints
A
- Articulating bones connected by fibrous tissue
- Limited movement
3
Q
Cartilaginous Joints
A
- Articulating bones united by hyaline/fibrocartilage
- Primary (synchondroses) early life development
- Secondary (symphyses) strong, low movement
4
Q
Synovial Joints
A
- Articular surfaces
- Hyaline cartilage
- Free movement between articulating bone
- Lined by synovial membrane
- Contains synovial fluid
- Ligament reinforced
- Special structural elements (discs & menisci)
- 6 joint classes
5
Q
Synovial Joint Classes
A
- Saddle
- Ball & socket
- Condyloid
- Pivot
- Hinge
- Plane
6
Q
Joint Stability & ROM Factors
A
- Shape & arrangement of articulating surfaces
- Ligaments crossing the joint
- Tone of surrounding muscles
7
Q
Ball & Socket Joints
A
- Shoulder & hip
- Multi-axial synovial joint
- High mobility
- Low stability
8
Q
Hinge Joints
A
- Knee (complex)
- Elbow (simple)
- Uniaxial joint (single axis movement)
- More stability
- Less ROM
9
Q
Synovial Joint Components
A
- Bones
- Tendon/muscle
- Bursae
- Ligaments & capsule
- Intra-articular structures
10
Q
Ligament Definition
A
- Connective tissue structures
- Bind bones together
11
Q
Intra-Articular Structures
A
- Extracapsular ligaments
- Intracapsular ligaments
- Articular discs
- Labrum
12
Q
Extracapsular Ligaments
A
- Reinforce capsule
13
Q
Articular Discs
A
- Absorb shock
- Distribute weight
- Better fit between bony surfaces
14
Q
Labrum
A
- Ball & socket joints
- Fibrocartilaginous lip from joint edge
- Deepen socket
- Improve bony contacts
15
Q
Bursas
A
- Fluid filled sacs to reduce friction between moving parts
- Includes tendon sheaths
- Lined with synovial fluid
