Anatomy : Upper Limb Flashcards
Muscles in the anterior compartment of the arm
Brachialis
Biceps brachii
Corachobrachialis
Flexors innervated by the ulnar nerve
Flexor carpi ulnaris
Flexor digitorum profundus
Muscles that hold the humeral head in the glenoid cavity and reinforces the joint capsule
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
What causes a flattened deltoid and difficulty abducting the arm?
Axillary nerve injury
Most commonly injured carpal bone
Scaphoid
Boundaries of the anatomical snuffbox
Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicis longus
Scaphoid and trapezium
(Extend - thumb)
Where do you feel the pulse?
radial artery
Between tendons of
- Flexor carpi radialis
- Brachioradialis
(Flexor part…wrist are)
What artery is in the anatomical snuffbox?
Radial artery
Structures in the carpal tunnel
Median N.
Flexor tendons of digitorum superficialis, profundus and pollicis longus
A G3P2 is has pain on flexing the thumb and the wrist
Carpal Tunnel Injury
All the intrinsic muscles of the hand are innervated by the ulnar nerve except the
Abductor pol brevis, flexor pol brevis, opponens pollicis and 1st&2nd lumbricals
The following are innervated by the median nerve except : A. Abductor pollicis brevis B. Adductor pollicis brevis C. Flexor pollicis brevis D. Opponens pollicis
Adductor pollicis (Remember all intrinsic muscles of the hand are innervated by the ulnar nerve except for the thenar muscles and the 1st and 2nd lumbricals)
Patient underwent MRM presenting with winging of the scapula. Which nerve is most likely injured?
Long thoracic nerve (the only branch originating from the roots)
Wrist drop and saturday night palsy is caused by an injury of the…
Radial nerve at the level of the posterior cord
Waiter’s tip injury as caused by an upper brachial plexus injury has these three components
Adducted, extended, and medially rotated forearm + pronated forearm + carpal flexors flex hand at wrist
Newborn complicated birth with shoulder dystocia is mostlikely to have an injury in the
Injury to the superior trunk (C5-C6)
Part of Erb-Duchenne’s Syndrome
Medial rotator muscle of the shoulder joint
Subscapularis
Among the muscles of the rotator cuff, which would abduct the shoulder and would be injured by a direct blow to the front of the joint?
Supraspinatus; tendon of supraspinatus
Inability to supinate forearm could result from injury to which pair of nerves
Musculocutaneous and radial nerves
Main flexor of the forearm
Brachialis
Inflammation of the common EXTENSOR tendon is called _____. Where is the common origin of the tendons of the muscles involved?
Tennis elbow
Lateral epicondyle of the humerus
Inflammation of the common FLEXOR tendon is called _____. Where is the common origin of the tendons of the muscles involved?
Golfer ‘s elbow
Medial epicondyle of the humerus
Thenar muscles
Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
Hypothenar muscles
Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi
Compression of C8-T11(inferior trunk) would cuse
Weakness of the intrinsic muscles of the hand
APE Hand + Claw hand
A child has sustained a supracondylar fracture of the humerus and now has the index and middle finger in sustained extension when trying to make a fist. What is the affected nerve?
Median nerve (hand of benediction)
What nerve runs through the midshaft of the humerus p? And how would injury to the nerve present as?
Radial nerve
Wrist drop
Most commonly dislocated carpal bone
Lunate
Only supinator in the anterior compartment of the arm?
Biceps Brachii
