Elbow and forearm joints

humeroulnar joint concave and convex

convex trochlea of distal humerus and concave trochlear notch of ulna

degrees of freedom in humeroulnar joint

2

motions at the humeroulnar joint and axis of rotation (sagittal plane)

flexion and extension, medial lateral axis

motions at the humeroulnar joint and axis of rotation (frontal plane)

abduction and adduction, anterior and posterior axis

flexion arthrokinematics at humeroulnar joint

anterior and superior glide, anterior and superior roll

extension arthrokinematics at humeroulnar joint

posterior and inferior glide, posterior and inferior roll

closed packed humeroulnar

full extension with forearm supination

open packed humeroulnar

70-90 degrees of flexion, 10 degrees of supination

what does the humeroulnar distraction accessory motion assess

motion and symptom response

humeroradial joint concave and convex

convex capitulum and concave fovea of radial head

how many degrees of freedom at the humeroradial joint

3

humeroradial sagittal plane

felxion and extension

humeroradial frontal plane

abduction and adduction

humeroradial transverse plane

supination and pronation

humeroradial flexion arthrokinematics

anterior and superior glide, anterior and superior roll

humeroradial extension arthrokinematics

posterior and inferior glide, posterior and inferior roll

closed packed humeroradial

90 degrees flexion, 5 degrees supination

open packed humeroradial

full extension and supination

posterior glide of radius improves

extension

anterior glide of radius improves

flexion

proximal radioulnar concave and convex surfaces

concave radial notch (ulna) and convex head of radius

what type of joint is the proximal radioulnar

diarthrodial pivot joint

how many degrees of freedom in the proximal radioulnar joint

1

what plane does supination and pronation occur in radioulnar joint

transverse

What type of joint is the distal radioulnar?

diarthrodial double pivot joint

distal radioulnar concave and convex surfaces

convex ulnar head, concave ulnar notch of radius

arthrokinematics of proximal radioulnar joint during supination

external rotation/spin

arthrokinematics of proximal radioulnar joint during pronation

internal rotation/spin

closed packed proximal radioulnar

full pronation or supination

open packed proximal radioulnar

70 degrees flexion, 35 supination

anterior glide of proximal radioulnar joint improves

supination

posterior glide of proximal radioulnar joint improves

pronation

anterior glide of distal radioulnar joint improves

pronation

posterior glide of distal radioulnar joint improves

supination

normal cubital angle in males

5-10 degrees

normal cubital angle in females

10-15 degrees

cubital valgus

forearm is more lateral, cubital angle increased

cubital varus

forearm is more medial, cubital angle decreased