PHTY101 Lecture Notes - Lecture 3: Ulnar Notch Of The Radius, Radial Notch, Anatomical Terms Of Location
TOPIC 3: continued
FUNCTIONAL ANATOMY OF THE ELBOW REGION
Movements between the radius and ulna
• Superior radioulnar joint
- Spin of radial head on radial notch of ulna
• Inferior radioulnar joint
- Pronation with and without translation
- Roll and slide of ulnar notch of radius on ulnar head
- Female surface rolls and glides in the same direction
- slight extension and abduction of ulna - Anconeus
3.13 Define the terms spurt and shunt as they apply to muscle function.
SPURT (Movement): Large change in distal bone motion for small change in muscle length. (better
for moving a joint) E.g. brachialis
SHUNT (stability): Short change in muscle length results in small amount of distal bone motion. E.g.
Brachioradialis
Spurt and shunt (another way of thinking about muscle function around joints)
Blue line- Humerus
Line of pull of muscle
(arranged into vectors (green line)
Green line- Indicated how much the
line of pull goes into producing
movement at the joint
Green line- Indicated how much of the line of
pull goes into increasing stability at the joint
and pulling the joint surfaces together.
Document Summary
Movements between the radius and ulna: superior radioulnar joint. Spin of radial head on radial notch of ulna. Roll and slide of ulnar notch of radius on ulnar head. Female surface rolls and glides in the same direction slight extension and abduction of ulna - anconeus. 3. 13 define the terms spurt and shunt as they apply to muscle function. Spurt (movement): large change in distal bone motion for small change in muscle length. (better for moving a joint) e. g. brachialis. Shunt (stability): short change in muscle length results in small amount of distal bone motion. Spurt and shunt (another way of thinking about muscle function around joints) Line of pull of muscle (arranged into vectors (green line) Green line- indicated how much the line of pull goes into producing movement at the joint. Green line- indicated how much of the line of pull goes into increasing stability at the joint and pulling the joint surfaces together.
