ANPS 019 Lecture Notes - Lecture 20: Joint Capsule, Articular Disk, Synovial Joint
24 Oct 2018
School
Department
Course
Professor
Document Summary
Joints can be classified structurally as fibrous, cartilaginous, or synovial. Fibrous = bones linked by collagen fibers of connective tissue. Cartilaginous = bones linked by cartilage connective tissue. Synovial = ends of bones not connected by connective tissue; separated by fluid filled joint cavity. Articular cartilage hyaline cartilage at ends of bones that absorb compression. Fibrous layer = continuous with bone periostea. Synovial membrane = capsule lining; produce synovial fluid. Reinforcing ligaments connective tissue from bone to bone; supporting capsule. Bursa & tendon sheath closed synovial sac reducing friction between surfaces. Tendons connective tissue from muscle to bone, cross over joints, and stabilize. Articular disc fibrocartilage disc to absorb joint shock or help joint fit. Labrum fibrocartilage ring that deepens a synovial joint. Typically results in a decrease in joint angle. Typically results in an increase in joint angle. Typically results in movement toward midsagittal plane. Rotation of radioulnar joint such that palm is down.
