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Antebrachium:08

Fiona Doolan Inglés 58 fichas

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  1. 1interosseous membraneunique to antebrachium- because spans the space between the 2 bones
  2. 2extrinsic hand muscles flexorsFlexor carpi radialis:
    Palmaris longus:
    flexor carpi ulnaris
    Flexor digitorum superficialis:
    Flexor digitorum profundus:
    flexor pollicis longus
    pronator quadratus
  3. 3extrinsic hand muscles extensorsECRL
    ECRB
    ED
    EDMin
    ECU
    APL
    EPL
    EPB
    EI
  4. 4anterior forearm B Nulnar and anterior interosseous A
    median N except FCU 1/2 FDP
  5. 5posterior forearm N Bdeep branch of radial N
    radial and posterior IO A
  6. 6ECR + ECBequivalent to flexor carpi radialis
  7. 7pronator teressuperifical anterior antebrach- ulnar A median N
    median nerve passes between its 2 heads
    originates at medial epicondyle and ulna
  8. 8FCR insertionbase of 2 & 3 metacarpals
  9. 9FDSits own middle layer in antebrachium
    still median N and ulnar A
    PIP joints flex
    synergist for flexion of the wrist
    O at medial epi (flexor origin), on coronoid process of ulna, at anterior oblique line of radius
  10. 10deep anterior forearmall flexors, but dont cross elbow
    posterior interosseous artery
  11. 11pronator quadratus insertionradius
  12. 12flexor pollicis longusinterphalangeal joint of thumb to distal phalanx
  13. 13superficial posterior forearmbrachioradialis (more lateral)
    ext carpi radialis longus
    ext carpi radialis brevis
    ext digitorum
    ext digiti minimi
    ext carpi ulnaris
  14. 14common extensor origin?all extensors but Ext carpi rad long and brachioradialis (which isn't an extensor- it flexes elbow with forearm in neutral position)
  15. 15ext digitorumactive ext at metacarpal phalangeal jts
    passive flexion of IP joint results (NOT one of its ACTIONS)
    extension of wrist
  16. 16abductor digiti minimi flexor digiti minimi opponens digiti minimi lumbricals (there is one medial toulnar nerve and artery
    lumbrical for pinkie flexes MCP and extends by extensor hood DIP and IP
    abductor can deviate the little finger
    FDMin can flex
    Opponens can cause opposition of digit 5 at CMC joint
    lose ulnar innervation- alll of these don't work. so why does pinkie deviate as if being abducted?
    EXTENSOR DIGITI MINIMI not lost. deep branch radial N! extends digit 5 at MCP and extends wrist. but, uncontrolled, causes that mild abduction
  17. 17deep posterior forearm antebrachial Mposterior IO A
    DEEP radial N
  18. 18extensor digitorum shares insertion withextensor indicis- both insert on extensor aponeurosis
  19. 19supinatordeep posterior forearm, deep radial n, posterior interosseous N
    deep branch radial N enters antebrachium by passing through supinator
  20. 20FCU corresponds 1:1 toext carpi ulnaris
  21. 21palmaris longus corresponds 1:1 tono other muscle. it is unique in the anterior flexor compartment of the forearm
  22. 22flexor and extensor carpi radialis can compensate forlost wrist abduction
    compensate for lost ABD carpi rad
  23. 23flexor and extensor carpi ulnaris can compensate forlost wrist adduction
    the combined flex/ext cancel out and left wit a mild adduction
  24. 24extrinsic handflexor digitorum S and P correspond with ED, EDmin, and EI
  25. 25extrinsic hand FPL?FPL correspond ext poll brevis, EPL
  26. 26extrinsic hand abductor pollicis longus on the posterior compartment corresponds to what in the flexor compartment?nothing- ABD Poll Long is unmatched in the flexor comp
  27. 27pronator teres, a pronator corresponds tosupinator muscle, a supinator
  28. 28pronator quadratus, a pronator, corresponds tosupinator
  29. 29brachioradialis, flexor of elbow has radial innervation.unmatched by either compartment- but studied as posterior compartment because radial innervation
  30. 30which of these supinates? pronator teres supinator delts triceps biceps brachioradialissupinator, biceps
  31. 31radial Aemerges from brachial A in cubital fossa, running under brachioradialis to superficial extensor group with superficial branch of radial N
  32. 32radial recurrentanastemos with anterior radial collateral A
  33. 33ulnar between FCU FDPsuperficial anterior group.
    1. anterior ulnar recurrent--- inf ulnar collat
    2. posterior ulnar recurrent---- anast w wup uln collat
    3. common interosseous-
    post inteross &post inteross recurr,
    anterior interosseous
  34. 34posterior ulnar recurrentanastamose with superior ulnar collateral,
  35. 35recurrent arteriesmedial to lateral
    radial recurrent, posterior IO recurrent (back), anterior ulnar recurrent, posterior ulnar recurrent (back)
  36. 36median cubital vein bridges basilic and cephalic veinscephalic is on radial side of forearm.
    MCV is used for blood draw.
    underneath is protective fascial layer.
  37. 37key point about cutaneous Median N in antebrachiumcutaneous branch innervates thenar eminence, but emerges and is vulnerable before then, in forearm. LESION.
  38. 38in antebrachium ulnar innervatesFCU 1/2FDP
  39. 39cutaneous ulnar Ndorsal - dorsal side above hypothenar em
    palmar- hypothenar em
  40. 40radial N in antebrachiuminnervates brachioradialis, ECRL, before dividing into superficial, deep.
    SUPERficial split is cutaneous and goes ONLY to posterior lateral hand
    deep split enters forearm through supinator and innervates posterior extensors.
  41. 41lesion lower arm Radial Ntriceps (extensors) safe, so elbow extension ok but lose forearm extensors- wrist drop
    elbow flexion in handshake compromised- brachioradialis
    cutaneous lost POSTERIOR RADIAL HAND only
  42. 42lesion of deep branch radial nstill some wrist extensors left alive. ECRL only one that is ok.
    CUTANEOUS is fine because that's SUPERFICIAL branch
  43. 43lesion of superifical radial N antebrachlose just cutaneous dorsal radial hand.
  44. 44cubital fossabrachial V & A
    median N, medial to Brach A
    radial N, lateral to Brach A
    bordered medially by pronator teres, laterally by brachiorad.
    floor brachialis and supinator (distal)
  45. 45musculocutaneous Nbetween biceps and brachialis
    when emerges, now lat antebrach cut
  46. 46radial nerve emerges anterior just before the elbow. it gives off branches to ECRL and brachioradialis before superficial branch under brachioradialis muscle, with radial A then deep branch through SUpinator, to innervate remainder of forearm muscles.1. ECRL & brachiorad
    2. superficial goes under brachiorad muscle with radial A
    3. deep branch heads through Supinator and to innervate the rest of the posterior forearm muscles- extensors.
    radial C5-T1
  47. 47radial injuryIt can be compressed against the humerus by crutches, causing crutch paralysis. Symptoms of damage to the deep branch of the radial nerve typically include "wrist drop", which is the flexion of fingers, hand, and wrist, since the extensor muscles supplied by the nerve are paralyzed. Normal sensation of the skin is retained, since this nerve only provides sensory function to ligaments and articulations of the carpal and metacarpal joints
  48. 48deep branch radial NECRB
    ED
    EDmin
    ECU
    Supinator
    EI
    AbdPL
    EPB
    EPL
    (all superficial posterior antebrachium bar brachioradialis)
  49. 49elbow joint protected medially by? elbow joint protected laterally by?FDP, posterior band ulnar collateral
    radial collateral ligament
  50. 50elbow consists of and its stability is due to2 hinge joint
    1 pivot joint
    LIGAMENTS different than shoulder!!
    also bone: olecranon/ trochlear notch
  51. 512 hinge joints with stabilizing collateral ligaments1. humeroulnar. MEDIAL JOINT
    medial collat lig- anterior, posterior, oblique fibres
    2. humeroradial joint- LATERAL (RADIAL) collateral ligament
    and ANNULAR ligament
    capitulum not trochlea humerus*****
  52. 523rd elbow jointproximal radioulnar joint
    annular and quadrate ligaments(between ulna and radius)
    the proximal radioulnar is a pivot joint
    annular lig attach to radial notch of ulna
  53. 53anterior portion of MCLattach to coronoid of ulna
  54. 54clinical testing collateral ligamentsif medial ligament cannot protect from abduction
    if lateral ligament cannot protect from adduction
    hold still distal brachium then push forearm
  55. 55most common radius/ulna joints dislocation?ulna shunted posteriorly- fall and land on hands, push ulna posterior. Ulnar N damaged. CLAW HAND- lower cords BP
    between olecranon and medial epicondyle
  56. 56fractures elbow joint?fracture hum just above R & U- muscles spasm and pull ends of bone apart. damage brachial ARTERY. blood fill in cubital fossa, local pressure increases dramatically.
    affect both radial and ulnar artery
  57. 57nerve supply elbowanterior: median N, musculocut N
    posterior: Radial N, Ulnar N
  58. 58fibrocartilage radioulnar?theres are 3 radioulnar joints
    proximal/ superior- annular ligs
    middle- a fibrous synarthrosis, syndesmosis- interosseous membrane
    distal- the TFCC- triangulo-fibrocartilaginous complex

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Fichas sobre Antebrachium:08, creado por Fiona Doolan el 03/03/2016.
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Fiona Doolan
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