click below
click below
Normal Size Small Size show me how
Joints
Term | Definition |
---|---|
Synarthroses | immovable; sutures of skull |
Syndemoses | synarthroses; ligaments connect two bones, move movement possible because of ligament flexibility |
Gomphoses | synarthroses; unique joints occurring at root of tooth and alveolar process of mandible and maxilla; periodontal membrane |
Amphiarthroses | slightly movable, either hyaline or fibrocartilage; pubic symphysis |
Synchondroses | amphiarthroses; hyaline cartilage between articulating joints, disappear as bones fuse together |
Symphyses | symphyses; pad or disk of fibrocartilage connects two bones and permits slight movement when pressure is applied |
Diarthrosis/Synovial | freely movable; shoulder joint |
Types of synovial joints | uniaxial, biaxial, multiaxial |
Uniaxial | movement on one axis and one plane; hinge and pivot |
Hinge | uniaxial; only flexion and extension |
Pivot | uniaxial; articulations of bone on bone |
Biaxial | movement on two perpendicular axes; saddle and condyloid |
Saddle | biaxial; metacarpal with carpal (trapezium) |
Condyloid | biaxial; occipital to depression in atlas |
Multiaxial | movement on three or more planes; ball-and-socket and gliding |
Ball-and-socket | shoulder; multiaxial |
Gliding | successive vertebrae (least movable) |