Week 7 Masterclass (Elbow) Flashcards
What is the origin of the common extensor tendons of the forearm
Lateral epicondyle of the humerus
What are the 4 ligaments in the elbow joint
Ulnar collateral ligament
Annular ligament
Lateral Radial Collateral Ligament
Lateral Ulnar Collateral Ligament
What ligament acts as a hammock around the radial head
annular ligament
What is the ring concept of elbow stability
What are the 4 joints in the elbow
Humeroulnar joint
Humeroradial joint
Proximal radioulnar joint
Distal radioulnar joint
Where is the olecranon located
on the ulna
Where is the trochlea located
on the humerus
What is the interaction between the olecranon and trochlea
Olecranon articulates around the trochlea
What joint houses the olecranon and trochlea
Humeroulnar joint
The radial head rotates around what bony landmark to be able to sup/pro
Capitulum
How do the landmarks of the humeroulnar joint move in flex and ext
Flex - trochlear notch rolls and slides anteriorly over trochlea of humerus
Ext - trochlear notch rolls and slides posteriorly over trochlea of humerus
How do the landmarks of the humeroradial joint move in flex and ext
Flex - radial head rolls and slides anteriorly over capitulum
Ext - radial head rolls and slides posteriorly over capitulum
If a pt can’t pro/sup their arm, what should manual therapy target
Radius manipulation since the ulnar can’t move anyways
Where is pain in lateral epicondylitis
Localised at lateral epicondyle of humerus
What movements cause pain in tennis elbow pt
Palpation, gripping, repeated movements
Differential diagnosis between tennis elbow and nerve compression
Pain in tennis elbow is localised at epicondyle. Nerve compression is 5cm distal to epicondyle and exacerbated by sup/pro
Tennis elbow prognosis
6-12 weeks
Differential diagnosis between tennis elbow and bursitis
Pain at lateral epicondyle vs pain posterior to olecranon
Normal carrying angle of men
5-10 deg
Normal carrying angle of women
10-15 deg
What carrying angle would irritate the ulnar nerve and what is the classification for this carrying angle
> 30 deg
Excessive cubitus valgus
What ligament in the elbow provides resistance to valgus stress
UCL
Elbow ROM flex
140-150
Elbow ROM ext
0-10
Elbow ROM sup
90
Elbow ROM pro
80-90
What combination of movements will cause an elbow dislocation
Sup + axial force + valgus force
Most often seen when falling and landing on an outstretched arm
What joint does the annular ligament support
Superior Radioulnar
What ligament tears in PLRI
LUCL
What is another term for elbow dislocation
Posterolateral Rotatory Instability (PLRI)
