Brachial Plexus and injury

Question 1

Klumpke’s Palsy affects what nerves and presents how?

Answer 1

• Sensory: medial aspect of upper limb deficit
• Motor Loss: finger movement, forearm pronation, wrist/finger extension, wrist/finger flexion.
• Damage C8/T1
• claw hand presentation

Question 2

Radial Nerve injury or C5-T1 injury causes what?

Answer 2

• wrist drop
• affect extensor compartment
• occur from humerus mid shaft fracture

Question 3

Axillary nerve Damage c5/c6 presents how, and can occur from what?

Answer 3

• deltoid and teres muscle function loss.
• weak rotation and abduction
• Fx to humeral surgical neck

Question 4

Injury to long thoracic nerve c5,c6,c7 affects what muscles and results in what condition?

Answer 4

• serratus anterior resulting in winged scapula

- unable to raise arms past 90 degrees

Question 5

Injury to Ulnar nerve C7, C8, T1 can cause what loss of funciton?

Answer 5

• damage to flexors of wrist, digits, intrinsic hand muscles.
• loss of Ab/ Adduction of fingers

Question 6

Injury to Median Nerve C6-T1 nerve roots.

Can occur by what methods, and what are affected?

Answer 6

• fx above humeral condyles, slashed wrist, carpal tunnel syndrome.
• flexors of wrist and digits, intrinsic hand muscles

Question 7

Pope’s Blessing is a result of what?

Answer 7

• damage to median nerve C6-T1.
• 2nd, 3rd digits remain extended during attempt to contract.
• paresthesia along median nerve

Question 8

Ape Hand occurs with what nerve damage?

Answer 8

• loss of thenar opposition

- MEdian nerve damage C6-T1

Question 9

What is affected by Erb’s Palsy? The sensory and motor deficits specifically?

Answer 9

Sensory: lateral aspect of upper limb
Motor: arm abduction loss, elbow flexion, forearm supination, weak wrist extension
- affects C5/C6 spinal nerve roots

Question 10

The base boundary of the Axilla is formed by what?

Answer 10

-skin, superficial fascia, serratus anterior, latissimus dorsi, teres major, pectoralis major

Question 11

What are the anterior boundaries of teh axilla?

Answer 11

• clavicle
• subclavius muscle
• pec major/minor

Question 12

What are the boundaries of the posterior wall of the axilla?

Answer 12

• scapula
• subscapularis
• latissimus dorsi
• teres major

Question 13

What lateral structures for the axilla boundary?

Answer 13

• intertubercular sulcus
• long head of biceps tendon
• coracobrachialis tendon