Week 10/11 - forearm bones, movement, muscles Flashcards
Allan has had a CVA (stroke). What pathway potentially has been lesioned?
- Corticospinal tract
- Interneurone at level of C5
- Lower motor neurone at C5
- Spinal nerve at C5
- The radial nerve
- Corticospinal tract
A stroke effects an area of the brain.
What does the inrerosseous membrane do between ulna and radius?
The membrane maintains the interosseous space between the radius and ulna through forearm rotation and actively transfers forces from the radius to the ulna
Name the small pronator muscles in the forearm and where they are located?
Pronator teres - proximal forearm
Pronator quadratus - distal forearm
What occurs at the radial head during pronation?
Medial rotation
Anterior forearm muscles - superficial layer
Pass, fail, pass, fail
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
Anterior forearm muscles - intermediate layer
Flexor digitorum superficialis
Anterior forearm muscles - deep layer
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
PRONATOR TERES
Attachments:
P: medial epicondyle and coronoid process of ulna
D: proximal radius
Action: forearm pronation and
elbow flexion
NS: median n.
FLEXOR CARPI RADIALIS
Attachments:
P: medial epicondyle of humerus
D: palmar surface of base of 2nd
metacarpal
Action: wrist flexion and radial
deviation (abd)
NS: median n.
PALMARIS LONGUS
Attachments:
P: medial epicondyle of humerus
D: flexor retinaculum and palmar
aponeurosis
Action: wrist flexion
NS: median n.
FLEXOR CARPI ULNARIS
Attachments:
P: medial epicondyle of humerus
D: palmar surface of pisiform, hook of the hamate and base of 5th metacarpal
Action: wrist flexion and ulnar
deviation (add)
NS: ulnar n.
FLEXOR DIGITORUM SUPERFICIALIS
Attachments:
P: medial epicondyle of humerus
D: middle phalanges of digits 2 - 5
Action: flexion at wrist,
metacarpophalangeal and proximal interphalangeal joints of digits 2 - 5
NS: median n.
FLEXOR DIGITORUM PROFUNDUS
Attachments:
P: proximal anterior medial surface of ulna and IOM
D: palmar surface of base of distal
phalanges of digits 2 - 5
Action: distal interphalangeal joint flexion of digits 2 - 5
NS: ulnar and Median nerve (anterior
interosseous n).
FLEXOR POLLICIS LONGUS
Attachments:
P: anterior surface of radius and IOM
D: palmar surface of base of distal
phalange of 1st digit
Action: metacarpophalangeal and
interphalangeal flexion of 1st digit
NS: anterior interosseous n.
PRONATOR QUADRATUS
Attachments:
P: distal anterior surface of ulna
D: distal anterior surface of radius
Action: radio-ulnar joint pronation
NS: anterior interosseous n.
You examine the tone in Allan’s anterior forearm and find
that he has increased tone in all muscles of the anterior forearm.
With regards to the elbow joint he is beginning to lose range of
motion in which direction?
- Extension
- Flexion
- Extension
You examine the tone in Allan’s anterior forearm and find
that he has increased tone in all muscles of the anterior forearm.
With regards to the wrist joint he is beginning to lose range of
motion in which direction?
- Extension
- Flexion
- Extension
You examine the tone in Allan’s anterior forearm and find
that he has increased tone in all muscles of the anterior forearm.
With regards to the finger and thumb interphalangeal joints he is
beginning to lose range of motion in which direction?
- Extension
- Flexion
- Extension
You want to ensure that Allan does not lose range of motion
in his elbow, wrist, fingers and thumb. You decide to give him a
stretch to help maintain range of motion at all the joints. What
position would you use?
- Elbow flexion, wrist extension, finger and thumb MCPJ extension, finger and thumb IPJ
extension - Elbow extension, wrist flexion, finger and thumb MCPJ extension, finger and thumb IPJ
extension - Elbow extension, wrist extension, finger and thumb MCPJ flexion, finger and thumb IPJ
extension - Elbow extension, wrist extension, finger and thumb MCPJ extension, finger and thumb IPJ
flexion - Elbow extension, wrist extension, finger and thumb MCPJ extension, finger and thumb IPJ
extension
- Elbow extension, wrist extension, finger and thumb MCPJ extension, finger and thumb IPJ
extension
