Classification + Position

Question 1

Radiocarpal Joint

Answer 1

> Synovial Ellipsoid joint allowing 2 degrees of freedom
Wrist joint connecting upper limb to hand
Closed packed = full extension and slight radial deviation (abduction)

Question 2

Mid carpal Joint

Answer 2

> Synovial, complex saddle joint allowing 2 degrees of freedom
Connecting first and second rows of carpals

Question 3

Intercarpal joints

Answer 3

> Synovial plane joints

> between adjacent carpal bones

Question 4

Carpometacarpal joints

Answer 4

> 1st (thumb) = synovial saddle joint (biaxial)
- between trapezium and base of 1st metacarpal
Others (2-5) = Synovial plane joints

Question 5

Intermetacarpal joints

Answer 5

> Synovial plane joints

Question 6

Metacarpophalangeal joints

Answer 6

> Synovial ellipsoid joints (biaxial)

> between metacarpal and proximal phalanges - forming knuckles of fist

Question 7

Interphalangeal joints

Answer 7

> Synovial hinge joints

• thumb only has one
• all other fingers have 2: PIP, DIP