Elbow

Question 1

What is considered the true hinge joint of the elbow

Answer 1

humero-ulnar joint

Question 2

What joint supports the majority of weight bearing in the elbow

Answer 2

Humero-radial jt

Question 3

The trochlea of the humerus is _______ on the AP surface and _________ on the ML surface

The Ulna is _________ on the AP surface and ______________ on the ML surface

Therefore flexion extension is _____________

Answer 3

convex, Concave

Concave, Convex

Concave on convex

Question 4

During flexion the radial head glides __________

during extension the radial head glides _________

Answer 4

anteriorly

posteriorly

Question 5

The radius is ______ moving on a ______ ulna

Answer 5

Convex on Concave

Question 6

With pronation, the ulna moves _____________

Supination, the ulna moves _____________________

Answer 6

Posterior/lateral (PULP) (Pronation Ulna Lateral Posterior)

Medial/Anterior

Question 7

What part of the interosseus membrane is essential for distribution of load and communication between PRUJ and DRUJ

Answer 7

Central Band

Question 8

What ligament surrounds the radial head

Answer 8

annular ligament

Question 9

Peak strain to the central band of the interosseus membrane occurs during __________

Answer 9

neutral forearm rotation

Question 10

what is the function of the interossei membrane

Answer 10

inhibit displacement of the radial head from its superior articulation with the ulna

Question 11

What band of the interossei ligament is where instability occurs

Answer 11

central band

Question 12

What band of the interossei ligament limits supination via passive tensioning

Answer 12

Dorsal Oblique Accessory Cord

Question 13

What is considered functional elbow ROM

Answer 13

30-130 flexion

Pronation/supination 50/50

Question 14

What is the capsular pattern of the elbow

Answer 14

flexion more limited than ext

Question 15

What muscle is involved in tennis elbow ususally

Answer 15

ECRB

Question 16

Pronation to neutral, what muscle activity?

Answer 16

Supinator concentric

Question 17

Supination to neutral, what muscle activity?

Answer 17

Pronator concentric

Question 18

Neutral to pronation, what muscle activity?

Answer 18

Supinator eccentric

Question 19

Neutral to supination, what muscle activity?

Answer 19

Pronator eccentric

Question 20

What position is best to stretch the tricep?

Answer 20

Full elbow flexion + shoulder flexion

Question 21

The tyler twist is for what diagnosis? What movement happens?

Answer 21

tennis elbow, eccentric contraction of wrist extensors