Medical Sciences 3999A/B/Y Lecture Notes - Lecture 16: Synovial Fluid, Synovial Membrane, Epiphysis
16 Feb 2020
School
Department
Professor
Document Summary
Joints: regions in which bones are capped and surrounded by ct. Generally unite long bones (i. e. elbow, knee, etc. ) Ligament and capsule of ct maintain contact at the ends of bone. Capsule encloses sealed articular cavity (contains synovial fluid) Synovial fluid (colourless, transparent, viscous) is blood plasma dialysate. High concentration of hyaluronic acid, produced by synovial layer cells. Contains gags: negative charge for repulsion across joints; water solvation. Articular surfaces with hyaline cartilage have no perichondrium - have direct access to nutrients from the synovial fluid which also serves to lubricate. 3 types based on tissue type uniting the bone. Result: bone breaks into fragments - clearly visible in x-ray. Broken ends are displaced apart and need to be repositioned to original location for successful healing. Achieved by enclosing fracture in a rigid plaster, metal plates, or traction. Complete fracture - when bone fragments are separated from each other.
