DocGuy
ANATOMY
Medicine Made Simple
, HAND
Bones of the hand
Carpal bones
Arranged in two rows
Proximal row - scaphoid, lunate, triquetral, pisiform
Distal row - trapezium, trapezoid, capitate, hamate
Pisiform on the anterior surface of triquetral where FCU is inserted
Scaphoid - tubercle (palpable)
Crest of trapezium
Hook of the hamate She Looks Too Pretty
Try To Catch Her
Carpus is arched transversely, the palmar aspect being concave
The concavity is maintained by,
Shapes of Individual bones - broader posteriorly than anteriorly except lunate (Lunate is broader
posteriorly)
The tough flexor retinaculum passing from the scaphoid and the ridge of the trapezium laterally
to the pisiform and the hook of the hamate medially
Arrangement of metacarpals relative to carpal bones
Fracture of Scaphoid
- Caused by falling on the palm with the hand abducted
(There the scaphoid lies directly facing the radius)
- May cause tenderness of anatomical snuff box (floor is
formed by scaphoid)
- 1/3 of cases – blood supply enters distally along waist
1
ANATOMY
Medicine Made Simple
, HAND
Bones of the hand
Carpal bones
Arranged in two rows
Proximal row - scaphoid, lunate, triquetral, pisiform
Distal row - trapezium, trapezoid, capitate, hamate
Pisiform on the anterior surface of triquetral where FCU is inserted
Scaphoid - tubercle (palpable)
Crest of trapezium
Hook of the hamate She Looks Too Pretty
Try To Catch Her
Carpus is arched transversely, the palmar aspect being concave
The concavity is maintained by,
Shapes of Individual bones - broader posteriorly than anteriorly except lunate (Lunate is broader
posteriorly)
The tough flexor retinaculum passing from the scaphoid and the ridge of the trapezium laterally
to the pisiform and the hook of the hamate medially
Arrangement of metacarpals relative to carpal bones
Fracture of Scaphoid
- Caused by falling on the palm with the hand abducted
(There the scaphoid lies directly facing the radius)
- May cause tenderness of anatomical snuff box (floor is
formed by scaphoid)
- 1/3 of cases – blood supply enters distally along waist
1
