Lecture 16

Question 1

What are the joints of the hand?

Answer 1

Carpometacarpal
Intermetacarpal
Metacarpophalangeal
Interphalangeal

Question 2

Where is the radiocarpal joint?

Answer 2

Between the distal radius and scaphoid, lunate, triquetrum.

Question 3

Where is the intercarpal joint?

Answer 3

Between the carpals in the proximal row and between the carpals in the distal row.

Question 4

Where is the midcarpal (physiological/functional) joint?

Answer 4

Between the proximal and distal carpal rows.

Question 5

What is the blood supply of the radiocarpal joint?

Answer 5

Branches of the palmar and dorsal arches.

Question 6

What type of joint is the radiocarpal joint?

Answer 6

A condyloid joint.

Question 7

What are the ligaments of the radioulnar joint?

Answer 7

Medial collateral
Lateral collateral
Palmar and dorsal radiocarpal
Palmar and dorsal radioulnar

Question 8

What is the nerve supply of the radiocarpal joint?

Answer 8

Anterior/posterior interosseus nerve

Deep branch of ulnar nerve

Question 9

What are the joints of the wrist?

Answer 9

Radiocarpal
Intercarpal
Midcarpal (physiological/functional)

Question 10

What are the ligaments of the intercarpal joints?

Answer 10

Anterior
Posterior
Interosseous

Question 11

What is the blood supply to the intercarpal joints?

Answer 11

Palmar and dorsal carpal arches

Question 12

What is the nerve supply to the intercarpal joints?

Answer 12

Anterior interosseous

Deep branch of ulnar

Question 13

What movement occurs at intercarpal joints?

Answer 13

Gliding between carpals

Question 14

What movements occur at the midcarpal joint?

Answer 14

Flexion
Extension
Radial deviation

Question 15

What are the ligaments of the carpometacarpal and the intermetacarpal joints?

Answer 15

Carpometacarpal
Intermetacarpal
Collateral (CMC only)

Question 16

What is the blood supply of the carpometacarpal and intermetacarpal joints?

Answer 16

Palmar arterial arches.

Dorsal and palmar metacarpal arteries (between arches).

Question 17

What is the nerve supply of the carpometacarpal and intermetacarpal joints?

Answer 17

Anterior and posterior interosseous nerves.

Deep ulnar nerve.

Question 18

What is the blood supply of the metacarpophalangeal and interphalangeal joints?

Answer 18

Palmar arterial arch

Question 19

What is the nerve supply of the metacarpophalangeal and interphalangeal joints?

Answer 19

Median nerve

Ulnar nerve

Question 20

What are the ligaments of the metacarpophalangeal and interphalangeal joints?

Answer 20

Collateral ligaments
Transverse metacarpal ligaments - stops excessive abduction between digits
Palmar (volar) plate
Dorsal plate

Question 21

What type of joint is the metacarpophalangeal joint?

Answer 21

Condyloid

Question 22

What type of joint is the interphalangeal joint?

Answer 22

Hinge joint

Question 23

What is skiers thumb and when does it occur?

Answer 23

Rupture of medial collateral ligament.
Occurs as a result of forced abduction and extension.

Adductor pollicis tendon can get impinged.

Question 24

What is a ventral interphalangeal injury?

Answer 24

Volar plate ruptures causing hyperextension of the proximal IP joint and compensatory flexion at the distal IP joint.
Swan neck deformity.

Question 25

What is a dorsal interphalangeal injury?

Answer 25

Dorsal plate rupture causing flexion at the proximal IP joint and compensatory extension at the distal IP joint.
Boutonnière deformity
Button

Question 26

What is a distal interphalangeal injury?

Answer 26

Extension expansion ruptures causing hyperflexion of the distal IP joint.
Mallet finger

Question 27

What are the fibrous flexor sheaths?

Answer 27

Annular fibres:
Found at joints

Cruciform fibres:
Criss cross
Keep annular fibres apart

Together they provide a tunnel for tendons to travel through when the phalanxes are extended.