Neuro Ddx Flashcards
What is the scale for grading reflexes?
0 No response
1+ Diminished
2+ Normal
3+ Brisker than average, increased
4+ Hyperactive, very brisk, with clonus (involuntary rhythmic oscillations between flexion and extension)
Positive pronator drift indicates a lesion where?
contralateral corticospinal tract
note: even in the presence of overall normal strength, the presence of a pronator drift indicates that there is a lesion somewhere along the path of the pyramidal tract.
What does a positive pronator drift test look like?
affected arm starts to pronate and drift downwards, often with flexion at the fingers and elbow
What nerve root/muscle are you testing with strength of shoulder abduction?
C5, deltoid
What nerve root/muscle are you testing with strength of elbow flexion?
C5, C6, biceps
What nerve root/muscle are you testing with strength of elbow extension?
C6, C7, C8-triceps
What nerve root/muscle are you testing with strength of wrist extension?
C6-8, radial nerve
What nerve root/muscle are you testing with strength of wrist flexion?
C6, C7, median nerve
What nerve root/muscle are you testing with strength of finger extension?
C7-8, posterior interosseous nerve
What nerve root/muscle are you testing with strength of finger abduction?
C8, T1, ulnar nerve
What nerve root/muscle are you testing with strength of hand grip?
C7-8, T1
What nerve root/muscle are you testing with strength of thumb opposition?
C8, T1, median nerve
What nerve root/muscle are you testing with strength of hip flexion?
L2-4, iliopsoas
What nerve root/muscle are you testing with strength of hip extension?
S1, gluteus maximus
What nerve root/muscle are you testing with strength of hip adduction?
L2-4, adductors of hip
What nerve root/muscle are you testing with strength of hip abduction?
L4-5, S1, Gluteus medius and minimus
What nerve root/muscle are you testing with strength of knee extension?
L2-4, quadriceps
What nerve root/muscle are you testing with strength of knee flexion?
L4-5, S1-2, hamstrings
What nerve root/muscle are you testing with strength of ankle dorsiflexion?
L4-5, tibialis anterior
What nerve root/muscle are you testing with strength of ankle plantar flexion?
S1, S2, Soleus
What nerve root/muscle are you testing with strength of great toe dorsiflexion?
L5, S1, deep peroneal nerve
Which nerve roots involved in biceps reflex?
*C5*, C6
Which nerve roots involved in brachioradialis reflex?
C5, *C6*
Which nerve roots involved in triceps reflex?
C6, *C7*
