PTH 661_Week 2_Elbow, Forearm + Wrist, Hand

Arthrokinematics for humeroulnar joint?

Concave on convex

Arthrokinematics of humeroradial joint?

Concave on convex; roll and glide in same direction

Arthrokinematics of proximal radioulnar joint?

Convex on concave

Radial head spins posteriorly on radial notch of ulna, describes what motion?

Supination

Radial head spins anteriorly on radial notch of ulna, describes what motion?

Pronation

Arthrokinematics of distal radioulnar joint?

Concave on convex; ulnar notch of radius rolls on fixed ulna

Open-packed position of humeroulnar joint?

70 degrees flexion, 10 degrees supination

Close-packed position of humeroulnar joint?

Full extension and supination

Capsular pattern for humeroulnar joint?

Flexion>extension

Open-packed position for humeroradial joint?

Full extension and supination

Close-packed position for humeroradial joint?

90 degrees flexion and 5 degrees supination

Capsular pattern for humeroradial joint?

Flexion>extension

Open-packed position for proximal radioulnar joint?

70 degrees flexion and 35 degrees supination

Close-packed position for proximal radioulnar joint?

5 degrees supination and full extension

Capsular pattern for the proximal radioulnar joint?

Pronation = supination

Open-packed position for the distal radioulnar joint?

10 degrees supination

Close-packed position for the distal radioulnar joint?

5 degrees supination

Capsular pattern for distal radioulnar joint?

Pronation=supination