Joint Mechanics Flashcards
What are the 4 types of fibrous joints?
Suture, cranial articulations, syndesmosis, gomphosis
What is a characteristic of a syndesmosis joint and what is an example of one?
Joint united by ligamentous fibrous sheet
Distal tibiofibular articulation
What is a characteristic of a gomphosis joint and what is an example of one?
Process fitting into socket
Periodontal ligament anchoring tooth
What are the 2 types of cartilaginous joints?
Hyaline and fibrocartilage
What is a characteristic of a hyaline joint and what is an example of one?
Cartilage unites bone
Epiphyseal plate
What is a characteristic of a fibrocartilage joint and what is an example of one?
Cartilage fuses into pad of fibrocartilage that is compressible
Intervertebral disc
What is the most common type of joint in the body?
Synovial
What are the 3 major characteristics of synovial joints?
1) articular surface covered with hyaline cartilage
2) enclosed by fibrous joint capsule
3) synovial membrane lines joint capsule secreting fluid
Matching: A) Spheroidal B) Condylar C) Ellipsoid D) Trochoid E) Sellar
1) Radiocarpal joint
2) Glenohumeral joint
3) Thumb
4) Atlas & axis
5) Metacarpal-phalangeal joint
A-2 B-5 C-1 D-4 E-3
What does Hilton’s Law say?
Nerves supplying a joint also supply the muscles moving the joint and the skin covering the attachments of these muscles
What is osteoarthritis?
Joint dx that gets worse over tie
Does NOT cause swelling
What is fibrillation?
Early degenerative change of articular cartilage due to loss of proteoglycans
What is eburnation?
Complete loss of articular cartilage
What are “Joint-mice” and what is the dx term for them?
Fragments of cartilage and/or bone floating freely in synovial fluid
Osteo-chondromatosis
Matching:
A) Fibrous
B) Cartilaginous
C) Synovial
1) Synarthrosis
2) Amphiarthrosis
3) Diarthrosis
A-1
B-2
C-3
