Deck 1 Flashcards
Brachial plexus is responsible for:
oThe motor innervation to upper limb, except trapezius and levator scapula
oThe sensory innervation of the upper limp except an area just above the point of the shoulder
What make brachial plexus?
Roots, trunks, divisions, cords, and terminal branches (muslculo-cutaneous n., ulnar n., median n., axillary n., radial n.
what is a brachial plexus injury?
Brachial plexus injury is an injury to the network of nerves that send signals from the spine to the shoulder, arm, and hand.
What are the two ways an injury occurs?
- When nerves are stretched, or in more serious cases they are torn (avulsion)
- When the shoulder is being pressed down forcefully while the head is pushed up and away from the shoulder
What is happens in avulsion?
the nerve root is torn from the spinal cord
common activities/ events that injury to the brachial plexus occurs:
Falls, contact sports, MVA, during birth, or inflammation or tumors
General symptoms:
•Weakness, disability, burners and stingers, weakness in hand or arm, neck pain
Symptoms for less severe injuries:
Less-severe injuries:
o Electric shock or burning sensation down arm, shooting down arm, lasts seconds or minuets, numbness or weakness
Symptoms for more severe injuries:
•More-severe injuries:
oTear or rupturing of nerves
True or False: No damage occurs to the lower nerves when the shoulder is forced down, and the neck stretches up and away from the injured shoulder.
FALSE: upper nerves
Damage to the upper nerves if the shoulder is forced down, and the neck stretches up and away from the injured shoulder
True or False: Damage occurs to the lower nerves if an arm is forced above the head.
TRUE
Damage to lower nerves if arm is forced above the head
What are common complications with the injury?
muscle atrophy, pain, stiff joints, loss of feeling (there are more, reference notes to see the rest)
True or False: It is important to be mindful of the patient’s pain when conducting session.
True: this will also help you build trust with your patient
What is the prognosis of the injury dependent on?
Age
Does Erb-Duchenne Palsy affect the superior or inferior part of the plexus?
superior part of the plexus
How does Erb-Duchenne occur?
Due to excessive increase in the angle b/t the neck and shoulder: nerve roots C5,C6 involved and muscles of the shoulder and arm
True or false: waiter’s tip position is involved in Erb-Duchenne?
True: •Waiter’s tip position: oCharacteristic position: adducted and internal rotation of the arm with forearm pronated oForearm extension normal oBiceps reflex absent
What is the clinical appearance of Erb- Duchenne?
Clinical appearance: • Adducted shoulder • Medially rotated arm • Extended elbow o Also see a sensory loss on the lateral aspect of the upper limb( uncommon) • Waiter’s tip position:
what is Klumpke Paralysis or Palsy?
Injury to inferior part of plexus
How does Klumpke Paralysis occur?
•Excessive abduction of the arm
oLess common then injury to the superior part of the plexus
•Could occur from a person grasping something to prevent a fall (tree branch or birth)
Is Klumpke Paralysis a superior or inferior injury of the brachial plexus?
Inferior:
Roots involved: C8 and T1
Clinical appearance:
- Motor loss: small muscles of the hand
* Sensory loss: medical aspect of the upper limb
What aspect of the plexus is injured in claw hand?
•Plexus lesion (C8-T1) ulnar, and/or median n. injury
Clinical appearance of claw hand:
All fingers are clawed
•Hyperextension at the mcp joints, flexion at the ip joints
