Wrist/Hand Joint Classifications

Question 1

What type of joint is the distal radioulnar joint?

Answer 1

Uniaxial pivot joint

Question 2

Describe the arthrokinematics of the distal radioulnar joint.

Answer 2

Concave-on-convex

Question 3

What is the capsular pattern of the distal radioulnar joint?

Answer 3

Pain at extremes of pronation/supination

Question 4

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

Answer 4

5 degrees of supination

Question 5

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

Answer 5

10 degrees of supination

Question 6

What type of joint is the radiocarpal joint?

Answer 6

Biaxial ellipsoid joint

Question 7

Describe the arthrokinematics of the radiocarpal joint.

Answer 7

Convex-on-concave

Question 8

What is the capsular pattern of the radiocarpal joint

Answer 8

Flexion and extension equally limited

Question 9

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

Answer 9

Extension with radial deviation

Question 10

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

Answer 10

Neutral with slight ulnar deviation

Question 11

What type of joint are the intercarpal joints?

Answer 11

Plane synovial joint

Question 12

Describe the arthrokinematics of theintercarpal joints.

Answer 12

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

Question 13

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

Answer 13

Extension

Question 14

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

Answer 14

Neutral with slight flexion (5-10 degrees)

Question 15

What type of joint are the midcarpal joints?

Answer 15

Plane synovial joint

Question 16

Describe the arthrokinematics of the midcarpal joints.

Answer 16

Medial compartment: convex-on-concave

Lateral compartment: concave-on-convex

Question 17

What is the capsular pattern of the midcarpal joints?

Answer 17

Equal limitation of flexion and extension

Question 18

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

Answer 18

Extension with ulnar deviation

Question 19

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

Answer 19

Neutral or slight flexion with ulnar deviation

Question 20

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

Answer 20

Sellar (Saddle-shaped) joint

Question 21

Describe the arthrokinematics of the first carpal-metacarpal joint.

Answer 21

Concave-on-convex for flexion/extension

Convex-on-concave for abduction/adduction

Question 22

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

Answer 22

Thumb abduction > Extension

Question 23

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

Answer 23

Full opposition

Question 24

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

Answer 24

Midway between abduction and adduction, and flexion and extension

Question 25

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

Answer 25

Plane synovial joint

Question 26

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

Answer 26

Equal limitation in all directions

Question 27

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

Answer 27

Full flexion

Question 28

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

Answer 28

Midway between flexion and extension

Question 29

What type of joint are the metacarpophalangeal joints?

Answer 29

1st MCP: hinge joint | 2-5th MCPs: biaxial joints

Question 30

Describe the arthrokinematics at the metacarpophalangeal joints.

Answer 30

Concave-on-convex

Question 31

What is the capsular pattern of the metacarpophalangeal joints?

Answer 31

Flexion > Extension

Question 32

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

Answer 32

Full opposition

Question 33

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

Answer 33

Slight flexion

Question 34

What type of joint are the interphalangeal joints?

Answer 34

Hinge joints

Question 35

Describe the arthrokinematics at the interphalangeal joints?

Answer 35

Concave-on-convex

Question 36

What is the capsular pattern of the interphalangeal joints?

Answer 36

Flexion > Extension

Question 37

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

Answer 37

Full extension

Question 38

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

Answer 38

Slight flexion