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Chung MI3 > Wrist > Flashcards

Wrist Flashcards

1
Q

Describe the DRUJ capsule

A

Encloses the dist radius and ulna, TFCC and carpals. Thick anteriorly/posteriorly, lax proximally

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2
Q

What is the TFCC?

A

Group of integral structures in lateral wrist. Lies btw ulnar, triquetrum and lunate. Includes: articular disc, meniscus homologue, UCL, vestigial remains of D&P radioulnar ligs

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3
Q

Describe the ligaments involved in the DRUJ

A

Palmar and dorsal radioulna ligaments which blend into the TFCC to form dorsal and palmar thickenings. Also include the interosseous ligaments

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4
Q

Describe the median nerve supply

A

Palmar aspect of forearm going down to the digits 1-3.5.

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5
Q

Describe the ulnar nerve supply

A

Ulnar aspect of palmar skin

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6
Q

Describe the articular surface of the radiocarpal and ulnarmeniscocarpal jts

A

Radius and TFCC = concave, prox carpal row = convex. The radius articulates with scaphoid and lunate whilst the TFCC articulates with the lunate and triquetrum

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7
Q

Describe the ligamants of the wrist (radiocarpal + ulna menisco carpal)

A 
UCL
RCL
Palmar radiocarpal ligamants
Palmar ulnocarpal ligamants
Dorsal radiocarpal ligament
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8
Q

Describe the capsule of the wrist (radiocarpal + ulnarmeniscocarpal

A

Lined with synovial membrane. RC capsule is isolated from the DRUJ by the TFCC, and from midcarpal jt by the interosseus ligament

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9
Q

Classify the DRUJ type and complexity

A

Synovial

Complex (articular disc)

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10
Q

Describe the radial nerve supply

A

Dorsal aspect of forearm and hand (digits 1-3.5)

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11
Q

Calassify the DRUJ shape and degrees of motion

A

Modified ovoid but acts as modified sellar functionally due to the interosseous membrane. 1 degree of motion

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12
Q

Describe the osteokinematics of the DRUJ (mechanical axis)

A

Mechanical axis = oblique longitudinal (vertical) axis from the end of the ulna to centre of capitulum

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13
Q

Describe the osteokinematics of DRUJ actions and planes/axis

A

Pronation/Supination - impure swing around vertical axis in transverse plane

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14
Q

Describe the DRUJ arthrokinematics

A

Pronation - anterior (palmar) glide of radius on ulnar

Supination - posterior (dorsal) glide of radius on ulna

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15
Q

Classify radiocarpal & ulnarmeniscocarpal jts (type and complexity)

A

Synovial, compound, complex

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16
Q

Classify the radiocarpal & ulnarmeniscocarpal (shape and degrees of motion)

A

Modified ovoid, 2 degrees of motion

17
Q

Describe the osteokinematics of radiocarpal & ulnarmeniscocarpal (mechanical axis)

A

Mechanical axis - obligue transverse axis btw lunate and capitate

18
Q

Describe the osteokinematics of radiocarpal & ulnarmeniscocarpal actions, planes/axis

A

Flexion/Extension - impure swing, oblique transverse axis in sagittal plane. Conjunct adduction (ulnar deviation) with flexion. Conjunct abduction (radial deviation) with extension
Radial/Ulnar deviation - impure swing about sagittal axis in frontal plane

19
Q

Describe the Arthrokinematics of radioulnar & ulnarmeniscocarpal jts

A

Flexion - dorsal glide of proximal carpal row on TFCC & radius. Extension - palmar glide of proximal carpal row on TFCC & radius. Radial deviation - ulnar glide. Ulnar deviation - radial glide

20
Q

What is the capsular pattern + end feel of radioulnar & ulnarmeniscocarpal jts

A

Equal restrictions of all movements. End feel: flexion, extension, ulnar deviation is capsular (firm); radial deviation is bony

21
Q

What is the capsular pattern of DRUJ + end feel

A

Equal limitations of pronation and supination
End feel pronation - capsular of bony
supination - capsular

22
Q

Classify the Midcarpal and intercarpal jts (type and complexity)

A

Synovial, compound

23
Q

Classify the midcarpal and intercarpal jts (shape and degrees of motion)

A

Modified ovoid, 2 degrees of motion

24
Q

Describe the midcarpal and intercarpal osteokinematics (actions, axis/planes)

A

Flexion/Extension - impure swing, oblique transverse axis in sagittal plane. Conjunct adduction (ulnar deviation) with flexion. Conjunct abduction (radial deviation) with extension. Radial/Ulnar deviation - swing about sagittal axis in frontal plane

25
Q

Describe the midcarpal and intercarpal -arthrokinematics

A

Flexion- dorsal glide, extension- palmar glide, radial deviation- ulna glide, ulna deviation- radial glide

26
Q

Trapezium/trapazoid on scaphoid - classification (type and complexity)

A

Synovial, compound

27
Q

Trapezium/trapazoid on scaphoid classification (shape and degrees of motion)

A

Modified ovoid- functions as sellar, 2 degrees of motion

28
Q

Trapezium/trapazoid on scaphoid arthrokinematics

A

T.T are concave, scaphoid is convex, flexion = palmar glide, extension- dorsal glide

29
Q

Classify the first carpometacarpal jt (type and complexity)

A

Synovial, simple

30
Q

Classify the first carpometacarpal jt (shape and degrees of motion)

A

Unmodified sellar, 2 degrees of motion

31
Q

Describe the osteokinematics of 1st CMC (mechanical axis)

A

Mechanical axis - longitudinal (vertical) axis runs through 1st metacarpal bone

32
Q

Describe the osteokinematics of the 1st CMC (actions, planes/axis)

A

Flexion/extension- swing about oblique axis in frontal plane, conjunct IR with flexion, conjunct ER with extension, abduction/adduction - swing about oblique axis in sagittal plane

33
Q

Describe the Arthrokinematics of 1st CMC jt

A

Flexion- ulnar glide of metacarpal base on trapezium, extension- radial glide, abduction-dorsal glide, adduction- palmar glide

34
Q

What is the end feel of 1st CMC jt?

A

Capsular (soft tissue approximation for adduction)

35
Q

What is the capsular pattern of the 1st CMC jt

A

Equal limitations of extension and abduction

flexion is full

36
Q

What is the resting position of 1st CMC jt

A

Mid-position

37
Q

What is the close pack position of 1st CMC

A

Full opposition or extension and abduction

38
Q

Describe the articular surface of radioulnar Jt

A

Ulnar notch of radius is concave, head of ulna is convex

Chung MI3 (4 decks)

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