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25 Cards in this Set
- Front
- Back
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What are the axillary artery divisions?
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Axillary to brachial (at lower margin of teres major) (gives of profunda brachii) to radial and ulnar
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What is the Allen test?
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A test for occlusion of the radial or ulnar artery, in which one of these arteries is compressed after blood has been forced out of the hand by clenching it into a fist; failure of the blood to diffuse into the hand when opened indicates that the artery not compressed is occluded.
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What is the median nerve sensory innervation?
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palmar aspect:
thumb, index, long and lateral half of ring fingers dorsal aspect: tips of same fingers and thumb |
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What is the unlar nerve sensory innervation?
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palmar and dorsal aspects
medial half of ring and little fingers |
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What is the radial nerve sensory innervation?
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Dorsum of arm, forearm and (except tips) of
thumb, index, long and lateral half of ring fingers |
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Volkmann’s Ischemic Syndrome
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Results from sudden complete occlusion of Brachial artery
After 6 hours irreversible ischemia leads to muscle necrosis & permanent flexion deformity |
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What are the three groups of the forearm flexors?
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Superficial group(4)
Intermediate (1) Deep group (3) |
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Muscles of superficial flexor:
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Four muscles:
Pronator teres FCR Palmaris longus FCU |
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Intermediate muscles of flexor forearm:
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Flexor Digitorum Superficialis
Spans from medial epicondyle and ulna, to radius before dividing into 4 slips to the 4 fingers |
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Deep group of flexors:
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Flexor Digitorum Profundus (sublimis)
Flexor Pollicis Longus Pronator Quadratus |
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Flexor digitorum Profundus innervation:
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From upper 1/2 of ulna
To Distal phalanx of four fingers 4th & 5th digit = ulnar nerve 2nd & 3rd digit = median nerve |
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Innervation of flexors:
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All but 1 1/2 muscles receive innervation via the median nerve. Exceptions are innervated by Ulnar Nerve:
Flexor Carpi Ulnaris 1/2 of Flexor Digitorum Profundus |
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What are the forearm extensor groups?
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Can be divided into four groups of three muscles each, all innervated by Radial N
Outcropping group Medial group Lateral group Miscellaneous group |
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Extensor outcropping group, also known as anatomical snuff box:
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Group of muscles to the thumb which arise from the center of the forearm
EPL EPB Abductor PL |
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Anatomical snuff box:
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Formed by the tendons of the outcropping group as they pass the wrist
EPB & AbPL = lateral edge EPL = medial edge Location of scaphoid |
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Medial group of forearm extensors:
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Extensor Digitorum
Extensor Digiti Minimi Extensor Carpi Ulnaris |
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Lateral group of forearm extensors:
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Brachioradialis
Extensor Carpi Radialis Longus Extensor Carpi Radialis Brevis |
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Miscellaneous group fo forearm extensors:
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Extensor Indicis
Supinator Anconeous |
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Function of anconeous:
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Acts to pull synovial membrane out of joint space during extension
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Innervation of forearm extensors:
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All 12 muscles are innervated by the radial nerve
Radial nerve splits prior to the supinator and the deep branch passes through the supinator to reach deeper muscles |
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Potential nerve entrapment areas:
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Each nerve passes through a muscle on its course through the forearm
Radial - Supinator Median - Pronator Teres Ulnar - Flexor Carpi Ulnaris |
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Subluxation & Dislocation Radial Head is called:
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Nursemaid's elbow
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Bones of hand acronym:
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S.L.T.P.T.T.C.H.
scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate |
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What are the contents of the carpal tunnel? 10 things
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4 flexor digitorum superficialis tendons, 4 flexor digitorum profundus tendons, median nerve, flexor pollicus longus
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contents of Guyon canal:
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Contains ulnar artery and ulnar nerve
also called ulnar canal |
