hand therapy

Question 1

what are the bones in the forearm

Answer 1

radius and ulna

Question 2

how many bones are there in the hand and what do they do

Answer 2

there are 27 bones

• 8 carpal bones in the wrist
• 5 metacarpals giving structure to the palm
• 14 phalanges forming the fingers for fine movements

Question 3

what are the names of the carpal bones

Answer 3

• scaphoid
• lunate
• triquetrum
• pisiform
• hamate
• capitate
• trapezoid
• trapezium

Question 4

what are intrinsic muscles

Answer 4

these are muscles that originate in the hand and control fine movement. they are broken into hypothenar and thenar muscles

Question 5

what are extrinsic muscles

Answer 5

these are muscles that originate in the forearm and inert into the hand providing the grip strength an finger movement `

Question 6

what are the thenar muscles

Answer 6

these include the
- OP
- FPB
- APL

Question 7

what are the thenar muscles

Answer 7

the thenar muscles include
- ODM
- ADM
- FDMB

Question 8

what is the role of the lumbricals

Answer 8

they flex the MCP joints and extend the IP joints of the 2nd, 3rd and 5th fingers

Question 9

what is the role of the dorsal interossei

Answer 9

abduct the 2nd, 3rd and 4th fingers

Question 10

what is the role of the palmar interossei

Answer 10

adduct the 2nd, 4th and 5th fingers

Question 11

what are the nerves in the hand

Answer 11

radial, median and ulnar

Question 12

where does the nerve supply sensation to in the hand

Answer 12

Median Nerve: Provides sensation to the thumb, index, middle, and half of the ring finger.
Ulnar Nerve: Supplies the little and ring fingers.
Radial Nerve: Controls wrist and finger extensors (on the dorsal side)