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47 Cards in this Set
- Front
- Back
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What is the TFCC comprised of?
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1. Articular Disc
2. UCL 3. Volar and radioulnar ligaments 4. Sheath of ECU |
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What motions injures TFCC?
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hyperextension and pronation
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Borders of anatomical snuff box are...?
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Abductor Pollicus Longus
Extensor Pollicus Brevis Extensor Pollicus Longus |
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Contents of the anatomical snuff box
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1. Radial artery
2. Radial Styloid 3. Scaphoid 4. Trapezium |
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Most frequently fractured carpal bone
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Scaphoid
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Contents of Carpal Tunnel
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FDSuperficialis tendons (4)
FDProfundus tendons (4) FPL tendon Median nerve |
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Borders of carpal tunnel
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medially: pisiform & hamate
laterally: scaphoid & trapezium anteriorly: flexor retinaculum |
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Pisiform is a sesmoid bone in the tendon of what muscle?
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Flexor carpi ulnaris
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Interossei muscles are innervated by which nerve?
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ulnar
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Radial and ulnar arteries join together to form which two structures?
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Deep palmar arch
Superficial palmar arch |
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What is it called when the ulnar nerve is compressed at guyon's canal?
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cyclist's palsy
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UCL thumb sprain is called what?
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Skier's or gamekeeper's thumb
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Mallet finger is when...
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flexor tendon avulses from distal phylange
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What is the "triangle sign"?
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When @ 90 degrees flexion, the olecranon and the epicondyles form an isosceles triangle
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Elbow is a ________ joint
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hinge
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Normal elbow carrying angle
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Males = 5-10 degrees
Females = 10-15 degrees |
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What is it called when elbow carrying angle is > 15 degrees
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cubitus valgus
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What is it called when elbow carrying angle is < 5 degrees
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cubitus varus ("gun-stock" deformity)
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Which ligament blends with elbow anular ligament?
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RCL
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UCL has 3 components, name them
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Anterior, Posterior, Oblique
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What does the annular ligament do?
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-Blends with fibrous membrane
-Reinforces lateral capsule -Holds head of radius in place -Makes up 4/5 of superior radioulnar joint |
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Cubital fossa boundaries
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-imaginary line between epicondyles
-pronator teres -brachioradialis |
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Contents of cubital fossa
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-brachial artery
-median nerve -biceps brachii tendon |
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Anterior compartment of forearm houses what?
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median and ulnar nerves, flexors & pronators
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Posterior compartment of forearm houses what?
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radial nerve, extensors & supinators
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Name the muscles in the anterior compartment and superficial layer
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-Pronator teres
-Flexor Carpi radialis -Palmaris longus -Flexor carpi ulnaris -Flexor digitorum superficialis |
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Name the muscles in the anterior compartment and deep layer
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-Flexor digitorum profundus
-Flexor pollicus longus -Pronator quadratus |
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Name the muscles in the posterior compartment and superficial layer (radial n.)
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-Brachioradialis
-Extensor Carpi Radialis L -Extensor Carpi Radialis B -Extensor Digitorum -Extensor Digiti Minimi -Extensor Carpi Ulnaris -Anconeus |
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Name the muscles in the posterior compartment and deep layer (radial n.)
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Supinator
Abductor Pollicis Longus Extensor Pollicis Brevis Extensor Pollicis Longus Extensor Indicis |
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Common flexor attachment is
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-medial epicondyle
(does not include FDP or FPL) |
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What is medial epicondylitis?
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little league elbow/golfer's elbow
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Common extensor attachment is
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lateral epicondyle
(does not incl. briachioradialis, ECRL, or extensor indicis) |
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What is aka lateral epicondylitis?
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tennis elbow
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Biceps Brachii
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O: supraglenoid tubercle/coracoid
I: radial tuberosity N: musculocutaneous C5-6 |
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Brachialis
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O: lower 1/2 humerus
I: ulnar tuberosity N: musculocutaneous C5-6 |
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Triceps Brachii
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O: infraglenoid tubercle
I: olecranon process N: radial C6-7 |
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Anconeus
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O: post. lateral epicondyle
I: lat olecranon process N: radial C7-8 |
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Pronator Teres
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O: common flexor tendon/coranoid
I: middle of radius N: median C6-7 |
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Flexor carpi radialis
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O: medial epi - common flexor
I: base of 2nd N: median C6-7 |
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Palmaris longus
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O: medial epicondyle via the CFT
I: superficial portion of the palmar aponeurosis N: median nerve, C6,7 |
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Flexor carpi ulnaris
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O: medial epicondyle via the CFT
I: pisiform & hamate bone, 5th N: ulnar, C8, T1 |
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Flexor digitorum superficialis
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O: medial epicondyle via the CFT
I: middle phalanx of the 4 fingers N: median nerve, C7,8,T1 |
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Flexor digitorum profundus
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O: upper 3/4 ulna
I: distal phalanx of medial 4 digits N: 1/2 ulnar nerve, C8,T1 1/2 median nerve, C8,T1 |
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Radial nerve innervates which muscles?
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All extensors
Triceps anconeus brachioradialis |
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Deep radial nerve innervates which muscles?
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Extensor carpi radialis brevis
Supinator Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris (ECU) APL, EPL, EPB, EI |
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Median nerve innervates which muscles?
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Pronator teres
1/2 flexor pollicus brevis abductor pollicis brevis opponenes pollicis all flexor muscles except FCU, FPL, and medial half of FDP |
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Ulnar nerve innervates which muscles?
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Most little hand muscles incl:
interossei 2 lumbercles adductor pollicis abductor digiti mini flexor digiti minimi opponens digiti mini |
