Forearm, Wrist And Hand Bones

Question 1

Features of the radius Proximal to distal

Answer 1

Head

Neck

Radial tuberosity: insertion of biceps brachii

Ulnar notch: forms distal radio-ulnar joint

Styloid process

Question 2

Features of the ulna P to D

Answer 2

Olecranon: articulates with olecranon fossa (posterior humerus)

Trochlear notch: articulates with trochlea of humerus

Radial notch: articulates with head or radius to form proximal radio-ulnar joint

Coronoid process: articulates with coronoid fossa of anterior humerus

Head of the ulna

Styloid process of the ulna

Question 3

Bones of the wrist: So long to pinky, here comes the thumb

Answer 3

S: Scaphoid
L: Lunate
T: Triquetrum
P: Pisiform

H: Hamate
C: Capitate
T: Trapezoid
T: Trapezium

Question 4

Scaphoid

Answer 4

Superior to radius
Large

Question 5

Lunate

Answer 5

Circular moon

Sometimes articulates with radius

Nearest to ulna

Question 6

Triquetrum

Answer 6

3 corners

Most medial of the proximal row

Almost no articulations

Pisiform rests ontop

Question 7

Pisiform

Answer 7

Floats on-top of Triquetrum

Small round movable

Question 8

Hamate

Answer 8

Most lateral or the distal row

Articulates with pinky and fourth digit

Hook of hamate

Question 9

Capitate

Answer 9

“Captain”: large central bone

Articulates with 4,3,2 metacarpals

Question 10

Trapezoid

Answer 10

Articulates with metacarpal 2

Question 11

Trapezium

Answer 11

Articulates with thumb

Saddle joint

Question 12

Radiocarpal joint

Answer 12

Where the radius articulates with Scaphoid, lunate and partly triquetrum

And ellipsoidal joint

Question 13

Distal radioulnar joint

Answer 13

Ulnar head articulates with carpals
Often not considered part of the wrist joint

Question 14

Interosseus Membrane

Answer 14

• Fibrous connective tissue
• Separates forearm into anterior and posterior compartments

Question 15

Radioulnar Ligaments

Answer 15

Annular ligament & Radioulnar ligament

Question 16

Annular ligament - Where? Purpose? Motions?

Answer 16

Where:
- Part of the proximal radio-ulnar joint

Purpose:
- Surrounds the head of the radius
-Maintains contact between radius and radial notch of ulna

Motions:
- it’s flexibility allows supination and pronation

Question 17

Radioulnar ligament

Answer 17

• Part of the distal radio-ulnar joint
• Stabilizes

Question 18

Articulations of the hand - Proximal to Distal

Answer 18

1. Carpometacarpal joints
2. Metacarpal phalangeal joint
3. PIP (Proximal interphalangeal joint)
4. DIP

Question 19

What type of joint is the DIP/PIP

Answer 19

Hinge joints

Question 20

What type of joint are the metacarpophalangeal joint?

Answer 20

Condylar/Ellipsoid joint

Question 21

What type of joint is the 1st carpometacarpal joint?

Answer 21

Saddle (Thumb)

Question 22

What type of joint are the 2nd-5th carpometacarpal joints?

Answer 22

Plane/ gliding joints