Carpus

Question 1

Which are the bones found in the proximal row of the carpus?

Answer 1

Scaphoid, Lunate, Triquetrum, Pisiform

Question 2

Which bones r found in the distal row of the carpus?

Answer 2

Trapezoid (small), trapezium, capitate, hamate

Question 3

What is the most prominent feature of the palmar carpal face?

Answer 3

The carpal tunel

Question 4

What are the borders of the carpal canal?

Answer 4

The radial and the Ulnar eminence

Question 5

What creates the ulnar eminence?

Answer 5

The piciform+the hook of hamate

Question 6

What creates the radial eminence?

Answer 6

By the tubercle of the scaphoid bone + the tubercle of trapezium

Question 7

What spans the carpal tunnel and what does it attach to?

Answer 7

The flexor retinaculum. Attaches to the scaphoid and the trapezium on one side, and to the hamate and triquetrum on the other side.

Question 8

which bones form the floor of the radial notch?

Answer 8

scaphoid and the trapezium

Question 9

which tendon attaches to the pisiform?

Answer 9

flexor carpalis ulnaris

Question 10

what is the anatomical snuffbox?

Answer 10

the floor of the radial notch, important cuz it’s usually fractured. If treated inadequately it can lead to pseudoarthrosis and necrosis of a fragment. EDIT THIS !

Question 11

what’s the carpal tunnel syndrome?

Answer 11

it is caused by the disproportion of the carpal tunnel and it’s contents, causing the median nerve to be compressed, therefore leading to numbness, tingling and the weakness of the hand

Question 12

describe the scaphoid

Answer 12

largest bone in prox. row,
has a tubercle on it’s palmar surface,
has blood vessels on its distal end/face
most often fractured

Question 13

What bones does the scaphoid articulate with?

Answer 13

PROXIMALLY: radius
DISTALLY: trapezium+trapezoid
MEDIALLY: lunate+capitate

Question 14

with which bones does the lunate articulate?

Answer 14

PROXIMALLY: radius+the articular disk
MEDIALLY: triquetrum
LATERALLY: scaphoid
DISTALLY: capitate/sometimes hamate

Question 15

describe triquetrum

Answer 15

pyramidal, apex pointing medially, base laterally

Question 16

what does triquetrum articulate with?

Answer 16

base of triquetrum articulates with the lunate LATERALLY
PROXIMALLY: articular disk
DISTALLY: hamate
PALMAR SURFACE OF THE TRIQUETRUM: pisiform

Question 17

describe the pisiform

Answer 17

the smallest bone, round, is inserted as a sesamoid bone in the tendon if the flexor carpi ulnaris

Question 18

what does pisiform articulate with?

Answer 18

DORSAL SURFACE: triquetrum

Question 19

describe the features of the trapezium

Answer 19

tubercle (dorsally)

medially to the tubercle there is a groove for the tendon of flexor carpi RADIALIS

Question 20

articulate surfaces of the trapezium?

Answer 20

DISTALLY: saddle shaped like a.s., joints eith the first metacarpal bone
MEDIALLY: trapezoid
BETWEEN THE DISTAL AND MEDIAL A.FACETS: second metacarpal bone
PROXIMALLY: scaphoid

Question 21

trapezoid?

Answer 21

wider dorsally than palmary
articulates with:
PROXIMALLY: scaphoid
DISTALLY: 2nd metacarpal
LATERALLY: trapezium
MEDIALLY: capitate

Question 22

capitate, articulation and description

Answer 22

the largest carpal bone
PROXIMALLY: scaphoid and lunate
DISTALLY: mostly 3rd m.bone, but 2. and 4. m.bone as well
LATERALLY: trapezoid
MEDIALLY: hamate

Question 23

the hamate, important structures

Answer 23

palmary- HAMULUS ! (the hook of hamate)

important bcs of the flexor digiti minimi brevis, pisohamate ligament

Question 24

hamate articulation?

Answer 24

PROXIMALLY AND LATERALLY: lunate
PROXIMALLY AND MEDIALLY: triquetrum
DISTALLY: 4th and 5th m.c. bone
LATERALLY: capitate