Elbow and Forearm Region Bony/True Joints

Question 1

humeroulnar or trochlear joint degrees of freedom

Answer 1

1

Question 2

humeroulnar or trochlear joint capsular pattern

Answer 2

flexion and extension

Question 3

humeroulnar or trochlear joint CPP

Answer 3

extension with supination

Question 4

humeroulnar or trochlear joint OPP

Answer 4

70° flexion, 10° supination

Question 5

humeroulnar or trochlear joint articulating surfaces

Answer 5

trochlea of the humerus to trochlear notch of the ulna

Question 6

elbow joint type of joint

Answer 6

synovial diarthrodial hinged/ginglymus joint

Question 7

humeroulnar or trochlear joint ligaments

Answer 7

medial/ulnar collateral ligament (MCL)
3 sets: anterior, intermediate, and transverse or posterior fibers

Question 8

MCL attachments

Answer 8

to the medial epicondyle - olecranon process to the coronoid process

Question 9

elbow joint osteokinematics

Answer 9

flexion and extension

Question 10

humeroulnar or trochlear joint arthrokinematics

Answer 10

concave: ulnar trochlear notch
convex: humeral trochlea

Question 11

elbow joint plane and axis

Answer 11

sagittal plane (x-axis)

Question 12

elbow joint muscles

Answer 12

flexors: brachialis, biceps brachii, brachioradialis, pronator teres
extensors: triceps, anconeus

Question 13

humeroradial joint degrees of freedom

Answer 13

1

Question 14

humeroradial joint capsular pattern

Answer 14

flexion, extension, supination, pronation

Question 15

humeroradial joint CPP

Answer 15

elbow flexed to 90°, forearm supinated to 5°

Question 16

humeroradial joint OPP

Answer 16

full extension and full supination

Question 17

humeroradial joint articulating surfaces

Answer 17

capitulum of humerus to fovea of radius

Question 18

humeroradial joint ligaments

Answer 18

lateral/radial collateral ligaments (LCL)
3 sets: anterior, intermediate or transverse, and posterior fibers

Question 19

LCL attachments

Answer 19

lateral epicondyle to the upper margin of the annular ligament

Question 20

humeroradial joint arthrokinematics

Answer 20

concave: radial surface
convex: capitulum

Question 21

elbow joint arthrokinematics

Answer 21

anterior roll and anterior slide
posterior roll and posterior slide

Question 22

proximal radioulnar joint capsular pattern

Answer 22

equal limitation of supination and pronation

Question 23

proximal radioulnar joint CPP

Answer 23

5° supination

Question 24

proximal radioulnar joint OPP

Answer 24

70° flexion, 35° supination

Question 25

proximal radioulnar joint articulating surfaces

Answer 25

head of radius and annular ligament to the radiual notch of the ulna

Question 26

proximal radioulnar joint type of joint

Answer 26

synovial diarthrodial pivot/trochoid joint

Question 27

proximal radioulnar joint ligaments

Answer 27

annular ligament, quadrate ligament, oblique ligament

Question 28

annular ligament attachments

Answer 28

anterior and posterior margins of the radial notch on the ulna to the head of the radius

Question 29

quadrate ligament attachments

Answer 29

below the radial notch of the ulna to the medial surface of the neck of the radius

Question 30

oblique ligament attachments

Answer 30

lateral side of the ulnar tuberosity to just distal to the bicipital tuberosity

Question 31

proximal radioulnar joint osteokinematics

Answer 31

pronation and supination

Question 32

proximal radioulnar joint arthrokinematics

Answer 32

pronation: anterior spin supination: posterior spin (radial head moves)

Question 33

proximal radioulnar joint plane and axis

Answer 33

transverse plane (y-axis)

Question 34

distal radioulnar joint articulating surfaces

Answer 34

rounded head of the ulna and the ulnar notch of the radius

Question 35

distal radioulnar joint type of joint

Answer 35

synovial diarthrodial pivot/trochoid joint

Question 36

distal radioulnar joint ligaments

Answer 36

anterior (palmar) distal radioulnar ligament and posterior (dorsal) radioulnar ligament

Question 37

anterior (palmar) distal radioulnar ligament attachments

Answer 37

anterior aspect of the radioulnar joint

Question 38

posterior (dorsal) distal radioulnar ligament attachments

Answer 38

dorsal aspect of the radioulnar joint

Question 39

distal radioulnar joint osteokinematics

Answer 39

pronation and supination

Question 40

distal radioulnar joint plane and axis

Answer 40

transverse plane (y-axis)

Question 41

proximal and distal radioulnar joint muscles

Answer 41

pronators: pronator teres, pronator quadratus supinators: biceps brachii and supinator