4 major classes of joints
Bony, fibrous, cartilaginous, synovial
Bony class
Bones are together, immovable, frontal & mandibular bones
Fibrous class
Sutures, gomphoses, syndesmoses
Sutures
Many short collagen fibres, immovable
Gomphoses
Bone fits in a hole/socket, slightly moveable
Syndesmoses
Collagen fibres bind 2 bones, slightly moveable, like the membrane between tibia and fibula
Cartilaginous class
Synchondrosis & symphysis
Synchondrosis
Bones joined by hyaline cartilage, slightly moveable
Symphysis
Bones joined by fibrocartilage, slightly moveable
Synovial class
Joint cavity where 2 bones are separated by a space with synovial fluid, large range of motion
Ligaments
Bone to bone
Tendons
Bone to muscle
Bursa
Fibrous sac with synovial fluid between adjacent muscles, cushions muscles
Tendon sheath
Elongated bursa wrapped around tendon
Ball and socket joint
Multiaxial, shoulder joint
Plane
Biaxial, carpal bones rubbing against each other
Saddle
Biaxial, carpal bones with finger bones, allows our fingers to form a hook
Condylar
Egg shape fits into a socket from another bone, biaxial, finger bones
Pivot
Monoaxial, allows rotation, allows our forearm to rotate independent of the humerus
Hinge
Monoaxial, allows our arm at the elbow to bend
All multiaxial joints?
Ball and socket
All biaxial joints
Condylar, saddle, plane
All monoaxial joints
Hinge, pivot