Chapter 9 Joints Flashcards
What is a joint?
A joint is a point of contact between
1. Two or more bones
2. Cartilage and bone
3. Teeth and bone
What are the two classifications for joints?
Structurally and functionally
What is a fibrous joint?
A joint that has a lack of synovial cavity which has articulating bones held together with dense fibrous connective tissue. Permits little or no movement
What are the two types of fibrous joints?
Sutures or sundesmoses
What are cartilaginous joints?
Articulating bones held together with cartilage which lack a synovial cavity. Permit little to no movement
What are two types of cartilaginous joints?
Synchondroses or symphyses
What are synovial joints?
Articulating bones are covered with articular cartilage, held together by ligaments, contain synovial fluid, have a nerve and blood supply, and surrounded by an articular capsule. Permit a large range of movement
What are some types of synovial joints?
- Gliding
- Angular
- Rotation
- Special
What is a hinge joint?
Uniaxial: flexion extension. Elbow, ankle
What is a pivot joint?
Uniaxial: rotation. Atlanto- axial and radioulnar joints
What is a ellipsoid joint?
Oval shaped projection fits into oval shaped depression. Biaxial: flexion, extension, abduction. Radiocarpal joints
What is a saddle joint?
Biaxial: flexion- extension, abduction. Joint between metacarpal of thumb
What is a ball in socket joint?
Triaxial: flexion- extension, abduction- adduction, rotation. Hip joint
