Fibrous Joints

Gomphoses

"Peg in socket" fibrous joint. Periodontal ligament holds tooth in socket. Peg-in-socket joints of teeth in alveolar sockets Fibrous connection is the periodontal ligament

Fibrous Joints

Bones joined by dense fibrous connective tissue No joint cavity Most are synarthrotic (immovable) Three types: A. Sutures B. Syndesmoses C. Gomphoses

Syndesmoses

Joint held together by a ligament. Fibrous tissue can vary in length, but is longer than in sutures. Bones connected by ligaments (bands of fibrous tissue) Movement varies from immovable to slightly movable Examples: Synarthrotic distal tibiofibular joint Diarthrotic interosseous connection between radius and ulna

Sutures

Joint held together with very short, interconnecting fibers, and bone edges interlock. Found only in the skull. Rigid, interlocking joints containing short connective tissue fibers Allow for growth during youth In middle age, sutures ossify and are called synostoses

synarthrotic

immovable