Common cause of radial nerve injury.
Injury to the shaft of the humerus.
Common cause of median nerve injury.
Injury to the supracondyle of the humerus.
Common injury to the ulnar nerve
injury to the medial epicondyle of the humerus
Common cause of injury to the axillary nerve
Injury to the surgical neck of the humerus and or anterior shoulder dislocation.
Common injury to the musculocutaneous nerve.
compression between biceps aponeurosis and bachialis fascia.
Motor deficit in median nerve injury.
forearm pronation wrist flexion finger flexion thumb movement long term thenar atrophy
Median nerve sensory deficit.
loss of sensation in the thumb
lateral aspect of the palm
first 2.5 fingers index, middle, and half of the ring finger
Motor deficit in radial nerve injury.
loss of triceps reflex
brachiradialis reflex
extensor carpi radialis longus (classic wrist drop)
Sensory deficit in radial nerve injury.
loss of sensation to the posterior antebrachial cutaneous and the posterior brachial cutaneous
Motor deficit in ulnar nerve injury
causes impaired flexion and adduction of the wrist as well as impaired adduction of the ulnar 2 fingers and thumb
sensory deficit in ulnar nerve injury
Loss of sensation to the medial aspect of the palm as well as loss of sensation to the pinky and medial 1/2 of the ring finger
Motor deficit im axillary nerve injury
Loss of complete deltoid movement
Sensory deficit of axillary nerve injury
Loss of sensation over the deltoid muscle as well as the skin covering the inferior aspect of the deltoid.
Motor deficit of the musculocutaneous nerve.
Loss of function of coracobrachialis, biceps, and brachialis muscle.
Sensory deficit in musculocutaneous nerve injury
Loss of sensation to the radial aspect of the forearm
Wrist drop is an injury to the
Radial nerve
The muscles innervated by the radial nerve include
Mnemonic for muscles innervated by the radial nerve:
BEST
Brachioradialis
Extensors of wrist/fingers
Supinator
Claw hand is a result of
Ulnar nerve injury
Paralysis of the arm due to injury of the superior trunk of the brachial plexus (C5 and C6 roots)
Erb-Duchenne Palsy
What is a common cause of Erb-Duchenne palsy?
Shoulder dystocia at birth
Classic presentation of Erb-Duchenne palsy
Abductor paralysis (hanging limbs side to side)
Paralysis of lateral rotators (medial rotation)
Loss of biceps action (forearm pronation)
Compression of the subclavian artery and C8-T1
Thoracic outlet syndrome
Classic presentation of thoracic outlet syndrome
-‐ Thenar and hypothenar atrophy
-‐ Interosseus muscle atrophy
-‐ Sensory deficit of the medial forearm and hand
-‐ Loss of radial pulse upon head movement to the affected side
Thenar muscles
Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis
Hypothenar muscles
Opponens digiti minimi
Abductor digiti minimi
Flexor digiti minimi
Rotor cuff muscles
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
The recurrent laryngeal nerve is a branch of
Vagus nerve
The recurrent laryngeal nerve supplies all intrinsic muscles of the larynx except the
Cricothyroid
The right recurrent laryngeal nerve wraps around the
right subclavian artery
The left recurrent laryngeal nerve wraps around the
arch of the aorta and the ligamentum arteriosum
What artery supplies the SA and AV node up to 80% of the time?
right coronary artery
most common site of coronary artery occlusion
Left anterior descending artery
How many lobes does the R and L lungs have?
R 3 lobes superior, middle, inferior
L 2 lobes superior, inferior
What is the lymphatic drainage of the R and L side of the body?
R lymphatic duct drains R arm and r side of the head
left drains the rest of the body
(remember diagram)
What is the first major branch of the abdominal aorta?
Celiac trunk
Branches of the celiac trunk
Left gastric
Common hepatic
Splenic
The SMA supplies the
Duodenum to 2/3 of transverse colon
The IMA supplies the
distal 1/3 of the transverse colon to upper rectum
Diaphragmatic perforations
Mnemonic: I 8 10 Eggs at 12
T8 IVC
T10 esophagus and vagus at 10
T12 Aorta/azygous and thoracic duct
Retroperitoneal structures
2nd 3rd and 4th parts of the duodenum Descending colon Ascending colon Pancreas body and head IVC Aorta Kidneys and ureters
Boundaries of Hasselbech’s triangle
Rectus abdominis, inferior epigastruc vessels, inguinal ligament
Contents of the inguinal canal in males and females
Males- spermatic cord and ilioinguinal nerve
Females- round ligament of the uterus and ilioinguinal nerve
Boundaries of Hasselbech’s triangle
Rectus abdominis, inferior epigastruc vessels, inguinal ligament
Contents of the inguinal canal in males and females
Males- spermatic cord and ilioinguinal nerve
Females- round ligament of the uterus and ilioinguinal nerve
