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MS 100 > Forearm and hand bones/joints > Flashcards

Forearm and hand bones/joints Flashcards

1
Q

Articulating surface: Concave surface of radial head and capitulum of humerus

A

Radiohumeral joint

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2
Q

Articulating surface: trochlear notch of ulna and trochlea of humerus

A

Ulnohumeral joint

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3
Q

Radial/Ulnar humeral joint classification

A

uniaxial hinge, synovial joint

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4
Q

Radial/Ulnar humeral Movements permitted/ plane

A

Flexion/Extension
Med/Lat axis, Sagittal plane

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5
Q

Radial/Ulnar humeral Capsule

A

Weak anteriorly/posteriorly
Strengthened med/lat by “collateral ligaments”

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6
Q

medial / Ulnar collateral

A

triangular shaped, anterior, posterior, oblique bands
limits “vagus” motion (inward)

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7
Q

lat / Radial collateral

A

fan shaped
limits “varus” motion (outward)

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8
Q

articulating surface: edge of radial head, 1/5 articulates w ulna at any time

A

Proximal radioulnar joint

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9
Q

Proximal radioulnar joint classification

A

uniaxial, pivot
synovial joint

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10
Q

Proximal radioulnar joint movements permitted
axis/plane

A

Supination/pronation
Mechanical axis of radius (no plane)

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11
Q

Proximal radioulnar joint Capsule

A

Continuous w capsule of radio/ulno humeral joints

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12
Q

Annular ligament

A

encircles the radial head and ensures correct radial alignment with respect to the humerus and
ulna

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13
Q

Oblique cord

A

attaches ulna and radius anteriorly
limits / restricts- supination and inferior radial displacement

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14
Q

Olecranon Bursae

A

Subtendinous: Between olecranon of ulna and triceps tendon
Subcutaneous: between post aspect of olecranon and superficial fascia

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15
Q

Fat pads

A

outside synovial membrane, but inside capsule
offers cushion/protection

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16
Q

Articulating surface: Interosseous borders of radius/ulna

A

middle/intermediate radioulnar joint

17
Q

middle/intermediate radioulnar joint classification

A

fibrous syndesmosis, amphiaroidal joint

18
Q

interosseous membrane

A

Attaches between interosseous borders of radius and ulna
fibre direction of the interosseous membrane help w FOOSH

19
Q

Articulating surface: Head of ulna, ulnar notch of radius

A

Distal radioulnar joint

20
Q

Distal radioulnar joint classification

A

uniaxial pivot, synovial joint

21
Q

Distal radioulnar joint: movements permitted/plane

A

Supination & pronation

22
Q

Distal radioulnar joint Capsule

A

encloses the joint but is deficient superiorly

23
Q

palmar/volar & dorsal radioulnar ligaments

A

transverse orientation between distal radius & distal surface of ulna

24
Q

trifolar/ triradiate cartilage/ disc

A

-Attaches between Ulnar notch of Radius and Ulnar styloid
- seperates the distal Radioulnar joint from the wrist bone (radiocarpal joint)
- cushions impact between carpals, radius, and ulna

25
Q

Articulating surface: Distal radius & trifolar cartilage (concave)
Proximal row of carpals - scaphoid, lunate

A

Radiocarpal joint (wrist)

26
Q

Radiocarpal joint classification

A

biaxial condyloid, synovial joint

27
Q

Radiocarpal joint: movements permitted/ plane

A

Flexion/Extension
med/lat axis, sagittal plane
radio ulnar deviation: ant/post axis, frontal plane

28
Q

Radiocarpal joint Capsule

A

attaches distal radius and ulna, and proximal carpals with numerous folds

29
Q

Palmar radiocarpal ligament

A

long & short radiolunate, radioscaphoid & radiotriquetral bands
limit / restrict- wrist extension, cause the hand to follow radius in supination

30
Q

posterior radialcarpal ligament

A

attaches distal radius and radial styloid to triquetrum and lunate
limit / restrict- wrist flexion, cause the hand to follow radius in pronation

31
Q

ulnocarpal ligament (anterior and posterior)

A

attaches ulna and trifolar cartilage to lunate and capitate and triquetrum
limits wrist extenion/flexion

32
Q

Medial/ulnar collateral

A
  • attaches between ulnar styloid and triquetrum
  • limits / restricts- radial deviation, strengthens capsule
33
Q

lateral/radial collateral

A
  • attaches between radial styloid, scaphoid, trapezium and 1st metacarpal
  • limits / restricts- ulnar deviation, strengthens capsule
34
Q

Articulating surface: proximal row of carpals: Scph, lun, triq (concave)
Distal row: trpzm, trpzd, cap, ham (Convex)

A

Intercarpal / midcarpal joint

35
Q

Intercarpal / midcarpal joint classification

A

nonaxial plane, synovial joint

36
Q

Intercarpal / midcarpal joint movements permitted/ plane

A

gliding
motion at the midcarpal joint occurs primarily with wrist flexion - extension and ulnar - radial
deviation

37
Q

interosseous ligaments

A

attach between carpals (same row)
limits joint distraction

MS 100 (17 decks)

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