Ch 9 Flashcards
Arthrology
Study of joint structure, function, and dysfunction
Four classifications of joints
bony, fibrous, cartilaginous, synovial
Synostosis joints
BONY. two bones osssified together, immovable
Synarthrodial joints
collagen fibers bind adjacent bones
Three types of Fibrous joints
Sutures, gomphoses, syndesmoses
gomphoses
e.g. tooth in socket. held by periodontal ligament
Syndesmoses
long collagen fibers bind two bones. e.g. two forarm bones
Amphiarthrosis joints
cartilage joints
Synchondroses
cartilage joints. hyaline cartilage, epiphyseal plate, first rib/sternum(can ossify as u get old)
Symphyses
cartilage joints. Fibrocartilage, pubic symphysis, intervertebral discs
Diarthrosis joints
Synovial joints. most structurally complex. ur classic joint
What is the meniscus good for? Made up of?
Fibrocartilage padding on tough landings. Fibrocartilage.
Bursa
Sc of synovial fluid. They live in a fibrous sac. Wherever you need extra protection. fingers/shoulder/knee
Classes of Synovial joints
Ball and socket, Condylar, Saddle, Plane, Hinge, Pivot
Ball-and-socket
Multiple axial: shoulders/hips
Condylar (ellipsoid)
Biaxial (two directions). Fingers (metacarpo-phalangeals)
Saddle
Bone sitting in a saddle. Biaxial. Aposible thumbs. Concave perpendicular to convex surface.
Plane (gliding)
Biaxial. back and forth/ up and down. Carpals and tarsals.
Hinge
monaxial (one directions). Elbow and interphalangeal( fingers)
Pivot
Monaxial. Rotating. spin radius around ula.
Osteoarthritis (OA)
Wear-and-tear
Crepitus
crunching and cracking sounds of joints
Rheumatoid arthritis
Autoimmune disease where ur synovial membrane is attacked. They can eventually ossify (ankylosis).no movement. degenerated cartilage.
Ankylosis
Bones become solidly fused. immobilization
Arthroscopy
Using a small scope to look around in the joint
