1 SEMESTER
st
,
,The long flexors of the hand are: The long extensors of the hand are:
• extensor carpi radialis longus
• flexor digitorum muscles. • extensor carpi radialis brevis
• flexor pollicis longus. • extensor digitorum
• flexor carpi radialis. • extensor digiti minimi
• palmaris longus. • extensor carpi ulnaris
• flexor carpi ulnaris. • abductor pollicis longus
• extensor pollicis brevis
• extensor pollicis longus
• extensor indicis
Long flexors of the fingers Long extensors of fingers
• flexor digitorum profundus, • extensor carpi radialis longus
• flexor digitorum superficialis. • extensor carpi radialis brevis
• extensor digitorum
• extensor digiti minimi
• extensor carpi ulnaris
• abductor pollicis longus
• extensor pollicis brevis
• extensor pollicis longus
• extensor indicis
,Because of this major role of
the median nerve, it is also weakness in flexion of the hand
called the eye of the hand. at the wrist
loss of flexion of radial half of
digits (index fingers, long fingers,
and the radial aspect of the ring
fingers) and thumb, loss of
abduction. “OKAY SIGN”
Inability to flex the wrist
down.
Loss of pronation of
forearm
brings the thumb away
from the fingers so that Loss of ABduction, flexion
we can grasp objects. and opposition of thumb
Weakness with gripping
, Median Nerve Injury?
The Median Nerve travels down the front of your arm and enters into the palm of your hand.
• weakness in the Abductor Pollicus Brevis muscle (the main muscle for thumb opposition).
Carpal Tunnel syndrome (low Median Nerve injury)
Laceration to the Median Nerve at the wrist
Phalen's sign test. You hold your arms out in front of you and then flex your wrists, letting your
hands hang down for about 60 seconds. If you feel tingling, numbness, or pain in the fingers
within 60 seconds, you may have carpal tunnel syndrome.
VS
(High Median Nerve Injury)
Laceration to the Median Nerve above your elbow
it paralyzes all of the muscles that flex (bend) your wrist and hand .
Only the Flexor Carpi Ulnaris (a muscle that flexes your wrist) and the Flexor Digitorum
Profundus (a muscle that bends your ring and pinky finger) are spared.
• Activities of daily living such as brushing teeth, tying shoes, making phone calls, turning door
knobs and writing, may become difficult with a median nerve injury.
st
,
,The long flexors of the hand are: The long extensors of the hand are:
• extensor carpi radialis longus
• flexor digitorum muscles. • extensor carpi radialis brevis
• flexor pollicis longus. • extensor digitorum
• flexor carpi radialis. • extensor digiti minimi
• palmaris longus. • extensor carpi ulnaris
• flexor carpi ulnaris. • abductor pollicis longus
• extensor pollicis brevis
• extensor pollicis longus
• extensor indicis
Long flexors of the fingers Long extensors of fingers
• flexor digitorum profundus, • extensor carpi radialis longus
• flexor digitorum superficialis. • extensor carpi radialis brevis
• extensor digitorum
• extensor digiti minimi
• extensor carpi ulnaris
• abductor pollicis longus
• extensor pollicis brevis
• extensor pollicis longus
• extensor indicis
,Because of this major role of
the median nerve, it is also weakness in flexion of the hand
called the eye of the hand. at the wrist
loss of flexion of radial half of
digits (index fingers, long fingers,
and the radial aspect of the ring
fingers) and thumb, loss of
abduction. “OKAY SIGN”
Inability to flex the wrist
down.
Loss of pronation of
forearm
brings the thumb away
from the fingers so that Loss of ABduction, flexion
we can grasp objects. and opposition of thumb
Weakness with gripping
, Median Nerve Injury?
The Median Nerve travels down the front of your arm and enters into the palm of your hand.
• weakness in the Abductor Pollicus Brevis muscle (the main muscle for thumb opposition).
Carpal Tunnel syndrome (low Median Nerve injury)
Laceration to the Median Nerve at the wrist
Phalen's sign test. You hold your arms out in front of you and then flex your wrists, letting your
hands hang down for about 60 seconds. If you feel tingling, numbness, or pain in the fingers
within 60 seconds, you may have carpal tunnel syndrome.
VS
(High Median Nerve Injury)
Laceration to the Median Nerve above your elbow
it paralyzes all of the muscles that flex (bend) your wrist and hand .
Only the Flexor Carpi Ulnaris (a muscle that flexes your wrist) and the Flexor Digitorum
Profundus (a muscle that bends your ring and pinky finger) are spared.
• Activities of daily living such as brushing teeth, tying shoes, making phone calls, turning door
knobs and writing, may become difficult with a median nerve injury.
