UE Joints Rest Position and Concave/Convex

Question 1

TMJ

Answer 1

Rest: mouth slightly open
Convex: mandible
Concave: temporal bone

Question 2

Sternoclavicular

Answer 2

Rest: anatomical position

Elevation/Depression
Convex: clavicle
Concave: sternum

Protraction/Retraction
Convex: sternum
Concave: clavicle

Elevate the mountain. Retract into the cave (talking about clavicle)

Question 3

Acromioclavicular

Answer 3

Rest: anatomical position

Convex: clavicle
Concave: acromion

Question 4

Glenohumeral

Answer 4

Rest: 55 degrees abduction, 30 degrees horizontal adduction

Convex: humerus
Concave: glenoid

Scapular plane!

Question 5

Ulnohumeral

Answer 5

Rest: 70 degrees flexion, 10 degrees supination

Convex: humerus
Concave: ulna

THINK OF TRACTION MOB - unhookying olecranon

Question 6

Radiohumeral

Answer 6

Rest: full extension, full supination

Convex: humerus
Concave: radius

Question 7

Proximal radioulnar

Answer 7

Rest: 70 degrees flexion, 35 degrees supination

Convex: radius
Concave: ulna

Question 8

Distal radioulnar

Answer 8

Rest: 10 degrees supination

Convex: ulna
Concave: radius

Convex/concave OPPOSITE of proximal radioulnar

Question 9

Radiocarpal

Answer 9

Rest: neutral with slight ulnar deviation

Convex: carpals
Concave: radius

Question 10

Metacarpophalangeal joints of digits 2-5

Answer 10

Rest: slight flexion

Convex: metacarpals
Concave: phalanges

Just look at fingers think about flexion happening!

Question 11

Proximal and distal interphalangeal joints of digits 2-5

Answer 11

Rest: slight flexion

Convex: proximal phalanges
Concave: distal phalanges

Just look at fingers think about flexion happening!