elbow 1 - anatomy Flashcards by VB VB

the trochlea articulates with what

the ulna

in the trochlear notch

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the capitulm articulates with what

the head of the radius

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which side of the trochlear is longer

the medial side this is what produces the carrying angle

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is men or women’s carrying angle larger

women’s: 13-16

mens: 10- 14

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what ligament surronds the radial head

the annular ligament

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where does the biceps tendon attach in the lower arm

the radial tuberosity

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where do the triceps attach

the olecranon

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what are the name of the two lateral ligamants of the elb.

the medial collateral lig (ulna)

the lateral collateral lig

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what is the function of the collateral lig of the elb.

keep the articular surface in contact and prevent side to side movement

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where does the radial collateral lig run from

the lateral epicondyle

blends distally with the annular ligament

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what two lig make up the ulnar collateral lig

lateral ulnar collateral lig

medial ulnar collateral lig

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lateral ulnar collateral lig - where does it run

the lateral epicondyle
to
the ulna

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the relationship between the lateral ulnar collateral lig and the radial collateral lig

orginate from a common origin

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what are the properties of the Ulnar collateral lig

it is triangular shaped

medial

3 bands - ant, post, oblique

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where does the ulnar collateral ligament run from

the medial epi

cornoid process and olecranon

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what motion do the ulnar collateral lig resist

valgus for

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what motion do the radial collateral lig resist

varus force

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what is the function of the annular lig

attaches at the anterior and the posteior margins of the of the radial notch of the ulna

keep the radial head in proximity with the ulna

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what is a nursemaid elb

when this is a distristractive force of sig magnitude that causes the radial head to dislocate

pulling child up from their elb.

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what kind of joint is the humeral radial joint

saddle - hinge

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what movement is allowed at the humeral-radial joint

flex and ext

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what is the capsular pattern of the HR joint

Flex > ext

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what is the resting position of HRJ

70-deg of flexion

10-sup

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what is the CPP of the HRJ

full extension with supination

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proximal radial-ulnar joint - motion

pronation and supination

proximal radial-ulnar joint - capsular pattern

equal pronation and supination

proximal radial-ulnar joint - resting position

70 flex 35 supination

proximal radial-ulnar joint - max position of the interossei

full ext 5-deg of supination

proximal radial-ulnar joint - what makes up this joint

circular radial head the radial notch of the ulna

what is another ligament of the proximal radial-ulnar joint that resit pronation and supination

the quadrate ligament fibers are taut with pronation and supination

at the proximal radial-ulnar joint what is moving on what to allow for pronation and supination

the rounded radial head is moving the the radial notch of the ulna

what resists pronation

the approximation of the radius and the ulna firm end feel

what resist supination

the interosseius membrane soft end feel

where does the olecranon bursa sit

lies posteriorly between the skin and the olecranon

what muscles flex the elb.

biceps (muscolcutaneus n.) brachialis (MSC n.) brachioradialis (radial nerve)

what muscle extend the elb.

triceps anconeus (both radial nerve)

what muscles are found in the superficial dorsal compartment

brachioradialis ECRL ECRB EDM ED ECU

what nerve supplies the superficial dorsal compartment

the radial nerve

what muscle are found in the deep layer of the dorsal compartment

abd pollicus longus extensor pollicus longus and brevis EI supinator

the deep layer of the dorsal compartent is supplies by what nerve

the Posterior interosseous nerve

what is the the Posterior interosseous nerve a continuation of

the radial nerve once it passes through the supinator

what are the flexors of the wrist

FCR FCU plamaris longus

the pronator teres is a site of entrapment for what nerve

the median nerve

what nerve supplies the pronator quadratus

AIN - branch of the median nerve

what does the brachial art branch into

the radial and ulnar art

what does allens test test

the blood flow to the hand looking for occulsions to the art

what are the roots of the ulnar nerve

C8 - T1

what is the pathway of the ulnar nerve

arcade of struther cubital tunnel two head of the FCU travesl between the FCU and FDP guyons canal hook of hammate

what makes up the cubital tunnel

the medial epicondyle olecranon

what flexes the fingers

FDP FDS

what goes through the cubital fossa

median

what is the pathway of median nerve

goes through the two heads of the pronator teres travels between FDS and FDP

when does the median nerve becomes the AIN

passes underneath the the FDS and travels next to the interossei

what muscle does the median nerve serve

flexor region - pronator teres - FCR - plamaris longus - FCU LOAF muscle - lumbrical (1-2) - oppenens pollicus brevis - abd pollicus brevis - flexor pollicus brevis

what muscles do the AIN serve

FDP FPL pronator quadratus

what muscles does ulnar nerve serve

intrinsic muscle of the hand - entire hypothenar eminence - adductor pollicis - interossei all - lumbrical (3-4) FCU superficial branch - palmaris brevis

what does the radial nerve serve

- Brachioradialis (elb. Flex) - Triceps (elb. Ext) - Aconeus (elb ext) - Dorsal comportment of the forearm o Brachioradialis o ECRL o ECRB o ED o EDM o ECU

PIN: (continuation of the radial nerve as it passes through the supinator)

o Supinator o Extensor indicis o Abd pollicis longus o Ext pollicis longus o Ext pollicis brevis o ED o EDM o ECU

what root is the median nerve

C6 - T1

what root is the radial nerve

C5- C8 and T1

what is the pathway of the radial nerve

runs Posteriorly, inferiorly, laterally between the heads of the triceps seperates between - superficial and deep branch arcade of froshe - radial nerve

what makes up the arcade of froshe

formed by the fibrous band between the heads of the supinator

what patho thing is going on that leads to PIN syndrome

compression of the nerve at the - Edge of the ECRB, arcade of Frohse, or as the PIN passes through the supinator

what is the overal presentation of PIN syndrome

weakness and not a lot of pain (still some) - pure motor, not sensory weakness: finger, wrist, thumb

what is radial tunnel syndrome entrapment location

arcade of frohse or as the pin passes through the supinator

what makes up the arcade of froshe

edial head of the triceps brachii muscle and its aponeurotic expansion

radial tunnel and PIN syndrome

PIN - weakness some pain radial tunnel - pain, no really weakness

elbow 1 - anatomy Flashcards

(67 cards)