Functional anatomy of the upper limb 2

Question 1

What is the wrist?

Answer 1

A joint complex consisting of radio-carpal joint and many relationships between carpal bones
Proximal row- Pisiform, triquetrum, lunate and scaphoid
Distal row- Hamate, capitate, trapezoid and trapezium

Some Lovers Try Positions That They Can’t Handle
Scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate

Articular disc betwewen ulna+ other bones (ulna not part of wrist joint)

Question 2

Characteristics of the radio-carpal joint

Answer 2

An ellipsodial/ condyloid joint- its capsule is reinforced by palmar, dorsal, radial collateral and ulnar collateral ligaments
Synovial membrane does not cover articular disc

Question 3

Midcarpal joint

Answer 3

Between 2 rows of carpal bones

Plane joint that allows gliding, but assist with wrist motions

Question 4

Carpometacarpal joint

Answer 4

Between distal row of carpal bones and proximal end of metacarpal bones
More stability than mobility
Approx 2-5
Gliding joints w/ limited range
Supporting palmar/dorsal CMC ligaments

Question 5

Wrist and hand joints

Answer 5

Medial 4 carpometacarpal joints are plane joints

Carpometacarpal joint of thumb = SADDLE JOINT, allows for opposition and reposition