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1. Fibrous Joints (Synarthorses) : Bones connected by fibrous connective tissue. Movement is very limited
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Date | 23.04.2018 | Size | 7.36 Kb. | | #45785 |
| Joint Classification!
Types
Syndesmosis: Considerable space between bones—Sheet of fibrous connective tissue bridging space.
Suture: Bones closely adjacent—interlocking
Gomphosis: Peg in hole
2. Cartilaginous Joints (Amphiarthroses): Bones united by cartilage. Movement is limited but significant
Types
Symphysis: Fibrocartilage disc-- Function: weight-bearing, shock absorption
Synchondrosis: Hyaline Cartilage—Function: non-weight bearing, allows stability and mobility
3. Synovial Joints (Diarthroses): Bones united by a fibrous joint capsule.
Types
Uniaxial: motion in one plane
Ginglymus: Hinge Joint
Trochoid: Pivot Joint
i.e. atlantoaxial joint, proximal radial ulnar joint
Biaxial: motion in two planes
Condyloid: Spherical ball and ellipsoidal socket--Concave on convex
i.e. metacarpophalangeal joint
Ellipsoid: Ellipsoidal ball and ellipsoidal socket
Sellar: Saddle joint. Convex/concave surface of one bone with the convex/concave surface of another bone. (Two Pringles together)
i.e. Carpometacarpal joint of the thumb
Triaxial (Multiaxial): motion in 3+ planes
Plane: Two almost flat surfaces.
i.e facet jt, adjacent carpal bones
Spheroid: Ball and Socket
Stabilizing Structures of a Joint
****If damaged= hypermobility
Joint Capsule
Antagonistic muscles/tendons
Ligaments
Certain Accessory Fibrocartilaginous Structures
Sensory nerve System (pain receptors0
Mobilizing Structures of a Joint
****If damaged=hypomobility
Articular Cartilage
Synovial Fluid
Bursa
Agonistic Muscles
Certain Accessory Fibrocartilaginous Structures
Motor Nerve Supply
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