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Musculoskeletal > Wrist/Hand Joint Classifications > Flashcards

Wrist/Hand Joint Classifications Flashcards

1
Q

What type of joint is the distal radioulnar joint?

A

Uniaxial pivot joint

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2
Q

Describe the arthrokinematics of the distal radioulnar joint.

A

Concave-on-convex

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3
Q

What is the capsular pattern of the distal radioulnar joint?

A

Pain at extremes of pronation/supination

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4
Q

What is the closed-packed position of the distal radioulnar joint?

A

5 degrees of supination

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5
Q

What is the open-packed position of the radioulnar joint?

A

10 degrees of supination

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6
Q

What type of joint is the radiocarpal joint?

A

Biaxial ellipsoid joint

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7
Q

Describe the arthrokinematics of the radiocarpal joint.

A

Convex-on-concave

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8
Q

What is the capsular pattern of the radiocarpal joint

A

Flexion and extension equally limited

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9
Q

What is the closed-packed position of the radiocarpal joint?

A

Extension with radial deviation

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10
Q

What is the open-packed position of the radiocarpal joint?

A

Neutral with slight ulnar deviation

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11
Q

What type of joint are the intercarpal joints?

A

Plane synovial joint

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12
Q

Describe the arthrokinematics of theintercarpal joints.

A

Convex-on-concave (except for the scaphoid-trapezium… which is concave-on-convex)

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13
Q

What is the closed-packed position of the intercarpal joints?

A

Extension

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14
Q

What is the open-packed position of the intercarpal joints?

A

Neutral with slight flexion (5-10 degrees)

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15
Q

What type of joint are the midcarpal joints?

A

Plane synovial joint

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16
Q

Describe the arthrokinematics of the midcarpal joints.

A

Medial compartment: convex-on-concave

Lateral compartment: concave-on-convex

17
Q

What is the capsular pattern of the midcarpal joints?

A

Equal limitation of flexion and extension

18
Q

What is the closed-packed position of the midcarpal joints?

A

Extension with ulnar deviation

19
Q

What is the open-packed position of the midcarpal joints?

A

Neutral or slight flexion with ulnar deviation

20
Q

What type of joint is the first carpal-metacarpal joint?

A

Sellar (Saddle-shaped) joint

21
Q

Describe the arthrokinematics of the first carpal-metacarpal joint.

A

Concave-on-convex for flexion/extension

Convex-on-concave for abduction/adduction

22
Q

What is the capsular pattern of the first carpal-metacarpal joint?

A

Thumb abduction > Extension

23
Q

What is the closed-packed position of the first carpal-metacarpal joint?

A

Full opposition

24
Q

What is the open-packed position of the first carpal-metacarpal joint?

A

Midway between abduction and adduction, and flexion and extension

25
Q

What type of joint are the 2-5 CMC joints?

A

Plane synovial joint

26
Q

What is the capsular pattern of the 2-5 CMC joints?

A

Equal limitation in all directions

27
Q

What is the closed-packed position of the 2-5 CMC joints?

A

Full flexion

28
Q

What is the open-packed position of the 2-5 CMC joints?

A

Midway between flexion and extension

29
Q

What type of joint are the metacarpophalangeal joints?

A

1st MCP: hinge joint

2-5th MCPs: biaxial joints

30
Q

Describe the arthrokinematics at the metacarpophalangeal joints.

A

Concave-on-convex

31
Q

What is the capsular pattern of the metacarpophalangeal joints?

A

Flexion > Extension

32
Q

What is the closed-packed position of the metacarpophalangeal joints?

A

Full opposition

33
Q

What is the open-packed position of the metacarpophalangeal joints?

A

Slight flexion

34
Q

What type of joint are the interphalangeal joints?

A

Hinge joints

35
Q

Describe the arthrokinematics at the interphalangeal joints?

A

Concave-on-convex

36
Q

What is the capsular pattern of the interphalangeal joints?

A

Flexion > Extension

37
Q

What is the closed-packed position of the interphalangeal joints?

A

Full extension

38
Q

What is the open-packed position of the interphalangeal joints?

A

Slight flexion

Musculoskeletal (7 decks)

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