Muscles paralysed in Erb’s paralysis are all except –
Correct Answer: Triceps
Description: Erb&; s palsy is due to injury to the C5 nerve root & rarely the C6 nerve root is injured . * Effects of injury - at shoulder : paralysis of deltoid , rhomboids , supra & infraspinatus & teres minor muscles . This results in loss of shoulder abduction & external rotation . - at elbow : biceps & brachialis muscles are paralyzed . This results in loss of flexion of elbow joint. - at forearm : supinator muscle paralyzed resulting in loss of supination of forearm - combined effect of injury is an arm hanging loose by the side of the trunk . The shoulder is internally rotated , the elbow is in extension , forearm is pronated & wrist is in flexion . This characteristic posture is popularly known as policeman or waiter &;s tip. - apa from this , there may sensory loss on outer aspects of the forearm both in front & back. REF:textbook of ohopedics, John Ebenezer,4th edition,pg.no.350
Category:
Orthopaedics
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now