Week 7 Masterclass (Elbow)

Question 1

What is the origin of the common extensor tendons of the forearm

Answer 1

Lateral epicondyle of the humerus

Question 2

What are the 4 ligaments in the elbow joint

Answer 2

Ulnar collateral ligament
Annular ligament
Lateral Radial Collateral Ligament
Lateral Ulnar Collateral Ligament

Question 3

What ligament acts as a hammock around the radial head

Answer 3

annular ligament

Question 4

What are the 4 joints in the elbow

Answer 4

Humeroulnar joint
Humeroradial joint
Proximal radioulnar joint
Distal radioulnar joint

Question 5

Where is the olecranon located

Answer 5

on the ulna

Question 6

Where is the trochlea located

Answer 6

on the humerus

Question 7

What is the interaction between the olecranon and trochlea

Answer 7

Olecranon articulates around the trochlea

Question 8

What joint houses the olecranon and trochlea

Answer 8

Humeroulnar joint

Question 9

The radial head rotates around what bony landmark to be able to sup/pro

Answer 9

Capitulum

Question 10

How do the landmarks of the humeroulnar joint move in flex and ext

Answer 10

Flex - trochlear notch rolls and slides anteriorly over trochlea of humerus

Ext - trochlear notch rolls and slides posteriorly over trochlea of humerus

Question 11

How do the landmarks of the humeroradial joint move in flex and ext

Answer 11

Flex - radial head rolls and slides anteriorly over capitulum

Ext - radial head rolls and slides posteriorly over capitulum

Question 12

If a pt can’t pro/sup their arm, what should manual therapy target

Answer 12

Radius manipulation since the ulnar can’t move anyways

Question 13

Where is pain in lateral epicondylitis

Answer 13

Localised at lateral epicondyle of humerus

Question 14

What movements cause pain in tennis elbow pt

Answer 14

Palpation, gripping, repeated movements

Question 15

Differential diagnosis between tennis elbow and nerve compression

Answer 15

Pain in tennis elbow is localised at epicondyle. Nerve compression is 5cm distal to epicondyle and exacerbated by sup/pro

Question 16

Tennis elbow prognosis

Answer 16

6-12 weeks

Question 17

Differential diagnosis between tennis elbow and bursitis

Answer 17

Pain at lateral epicondyle vs pain posterior to olecranon

Question 18

Normal carrying angle of men

Answer 18

5-10 deg

Question 19

Normal carrying angle of women

Answer 19

10-15 deg

Question 20

What carrying angle would irritate the ulnar nerve and what is the classification for this carrying angle

Answer 20

> 30 deg
Excessive cubitus valgus

Question 21

What ligament in the elbow provides resistance to valgus stress

Answer 21

UCL

Question 22

Elbow ROM flex

Answer 22

140-150

Question 23

Elbow ROM ext

Answer 23

0-10

Question 24

Elbow ROM sup

Answer 24

90

Question 25

Elbow ROM pro

Answer 25

80-90

Question 26

What combination of movements will cause an elbow dislocation

Answer 26

Sup + axial force + valgus force Most often seen when falling and landing on an outstretched arm

Question 27

What joint does the annular ligament support

Answer 27

Superior Radioulnar

Question 28

What ligament tears in PLRI

Answer 28

LUCL

Question 29

What is another term for elbow dislocation

Answer 29

Posterolateral Rotatory Instability (PLRI)