musculoskeletal system - joint classification (lecture 6)

Question 1

what are the three joint classifications, name them from least to most amount of movement

Answer 1

fibrous, cartilaginous & synovial

Question 2

name three synovial joint features

Answer 2

Complex make up of tissues and structures, aid free movement and control of it, ROM determined by bone ends

Question 3

how are synovial joints structured

Answer 3

Bone ends, hyaline cartilage, joint capsule and cavity, synovial membrane, ligaments

Question 4

name the 7 types of synovial joints

Answer 4

hinge, pivot, saddle, ellipsoid, condylar, plane, ball and socket

Question 5

name four ligaments of the knee, and their type

Answer 5

capsular ligaments:
MCL - medial collateral ligament
LCL - lateral collateral ligament
limits abduction/adduction

intracapsular ligaments:
ACL - anterior cruciate ligament
PCL - prosterior cruciate ligament
limits displacement of femur

Question 6

explain the trade off between stability and mobility

Answer 6

the more stable a joint the more contact or bony congruence is required, therefore the less mobile that joint will be, and vice versa

Question 7

name the multiaxial synovial joints

Answer 7

plane & ball and socket

Question 8

what type of synovial joint is the knee and TJM joint

Answer 8

condylar joint

Question 9

the amount of direction and movement at a joint is due to what

Answer 9

joint structure:
bone and shape
capsule and ligaments (location and length)
body surface contact

Question 10

what joints move along the transverse axis/coronal plane?

Answer 10

ellipsoid (wrist/radiocarpal), saddle (thumb/carpometacarpal), ball and socket (shoulder/hip)