Erb’s paralysis
Which of the following cords are associated with Erb’s Palsy?
| A |
C5 – C6 |
|
| B |
C6 – C7 |
|
| C |
C8 – T1 |
|
| D |
T1 – T2 |
Which of the following cords are associated with Erb’s Palsy?
| A |
C5 – C6 |
|
| B |
C6 – C7 |
|
| C |
C8 – T1 |
|
| D |
T1 – T2 |
A lesion at C5 – C6 causes the policeman’s tip deformity. Injury may be seen due to birth related injuries. Erb’s point or the punctum nervosum is a site at the lateral root of the brachial plexus located 2–3 cm above the clavicle. Erb’s point is formed by the union of the C5 and C6 nerve roots, which later converge. At the nerve trunk, branches of suprascapular nerves and the nerve to the subclavius also merge. Injury to Erb’s point causes paralysis of the biceps, brachialis, and coracobrachialis. The effect is called “Erb’s palsy”.
In a patient with erb’s palsy, paralysis of which of the following muscles results in medial rotation of the arm?
| A |
Supraspinatus and deltoid |
|
| B |
Teres major and biceps brachii |
|
| C |
Infraspinatus and teres minor |
|
| D |
Biceps brachii, brachialis and brachioradialis |
In a patient with erb’s palsy, paralysis of which of the following muscles results in medial rotation of the arm?
| A |
Supraspinatus and deltoid |
|
| B |
Teres major and biceps brachii |
|
| C |
Infraspinatus and teres minor |
|
| D |
Biceps brachii, brachialis and brachioradialis |
- Paralysis of Biceps brachii, brachialis and brachioradialis result in extended forearm.
- Paralysis of Supraspinatus and deltoid result in adducted arm.
A man with a history of fall presented with a deformity which is resembling ‘a waiter who waits for receiving his tip’. This posture is characteristically seen in?
| A |
Erb’s paralysis |
|
| B |
Klumpke’s paralysis |
|
| C |
Radial nerve paralysis |
|
| D |
Ulnar nerve paralysis |
A man with a history of fall presented with a deformity which is resembling ‘a waiter who waits for receiving his tip’. This posture is characteristically seen in?
| A |
Erb’s paralysis |
|
| B |
Klumpke’s paralysis |
|
| C |
Radial nerve paralysis |
|
| D |
Ulnar nerve paralysis |
Erb’s point is?
| A |
C4, C5 |
|
| B |
C5, C6 |
|
| C |
C6, C7 |
|
| D |
C7, C8, T1 |
Erb’s point is?
| A |
C4, C5 |
|
| B |
C5, C6 |
|
| C |
C6, C7 |
|
| D |
C7, C8, T1 |
Erb’s point is is a site at the lateral root of the brachial plexus located 2–3 cm above the clavicle.Erb’s point is formed by the union of the C5 and C6 nerve roots, which later converge. At the nerve trunk, branches of suprascapular nerves and the nerve to the subclavius also merge. The merged nerve divides into the anterior and posterior division of C5 and C6.
A 19 year old boy fell from the motorbike on his shoulder. The doctor diagnosed him as a case of Erb’s paralysis. All of the following signs and symptoms will be observed in this boy, EXCEPT?
| A |
Loss of abduction at shoulder joint |
|
| B |
Loss of lateral rotation |
|
| C |
Loss of pronation at radioulnar joint |
|
| D |
Loss of flexion at elbow joint. |
A 19 year old boy fell from the motorbike on his shoulder. The doctor diagnosed him as a case of Erb’s paralysis. All of the following signs and symptoms will be observed in this boy, EXCEPT?
| A |
Loss of abduction at shoulder joint |
|
| B |
Loss of lateral rotation |
|
| C |
Loss of pronation at radioulnar joint |
|
| D |
Loss of flexion at elbow joint. |
Due to Erb’s paralysis there is damage of biceps brachii and supinator due to which there is loss of pronation of forearm. It is associated with loss of abduction at shoulder joint, loss of lateral rotation and loss of flexion at elbow joint and is not associated with loss of pronation at radioulnar joint.
Erb’s paralysis occur from damage at the Erb’s point which is the meeting point of 6 nerves such as ventral rami of C5 and C6, suprascapular and nerve to subclavius of upper trunk and two divisions of upper trunk. Muscles paralysed are supraspinatus, deltoid, teres minor, infraspinatus, biceps brachii, brachialis, brachioradialis and supinator.
|
Position |
Paralysis of |
Overaction of |
|
Adduction of arm |
Supraspinatus and deltoid |
Adductors of the shoulder |
|
Medial rotation of the arm |
Teres minor and infraspinatus |
Medial rotators of the shoulder |
|
Extension of forearm |
Biceps brachii, brachialis and brachioradialis |
Extensors of elbow |
|
Pronation of forearm |
Biceps brachii and supinator |
Pronators of forearm |
Erb’s point is
| A |
Posterior primary rami of C6-C7 |
|
| B |
Anterior primary rami of C5-C6 |
|
| C |
Posterior primary rami of Cs-T1 |
|
| D |
Posterior primary rami of C2-C8 |
Erb’s point is
| A |
Posterior primary rami of C6-C7 |
|
| B |
Anterior primary rami of C5-C6 |
|
| C |
Posterior primary rami of Cs-T1 |
|
| D |
Posterior primary rami of C2-C8 |
B. i.e. Anterior primary rami of C5– C6
A 19 year old boy fell from the motar bike on his shoulder. The doctor diagnosed him a case of Erbs paralysis. The following signs and symptoms will be observed except:
| A |
Loss of abduction at shoulder joint |
|
| B |
Loss of abduction at shoulder joint |
|
| C |
Loss of pronation at radioulnar joint. |
|
| D |
Loss of flexion at elbow joint. |
A 19 year old boy fell from the motar bike on his shoulder. The doctor diagnosed him a case of Erbs paralysis. The following signs and symptoms will be observed except:
| A |
Loss of abduction at shoulder joint |
|
| B |
Loss of abduction at shoulder joint |
|
| C |
Loss of pronation at radioulnar joint. |
|
| D |
Loss of flexion at elbow joint. |
C ie Loss of pronation at radio ulnar joint
Which of the following deformity is evident in case of erbs palsy?
| A |
Policeman tip deformity |
|
| B |
Winging of scapula |
|
| C |
Claw hand |
|
| D |
Wrist drop |
Which of the following deformity is evident in case of erbs palsy?
| A |
Policeman tip deformity |
|
| B |
Winging of scapula |
|
| C |
Claw hand |
|
| D |
Wrist drop |
Ans. is ‘a’ i.e., Policeman tip deformity
