Flashcards in MSK radiology Deck (20):
What important features of the clinical history are useful in relation to radiology?
High/low velocity injury
Mechanism of injury (impaction, rotation, etc)
Site of bone tenderness
Presence/absence of deformity
Most fractures only require two x-ray views. Name these and the views that they require
Cervical spine (AP, lateral and odontoid peg)
Scaphoid (AP, lateral and two obliques)
In relation to fracture which features must you assess?
Site of fracture along bone
Extra or intra-articular?
Soft tissue abnormality
Which three structures can mimic avulsion fractures?
Sesamoid bone of the thumb
Accessory ossification centres (children)
Old non-united fractures
What is the posterior fat pad sign?
Fat pad normally sitting anterior to the distal humerus is displaced posteriorly by an elbow effusion
The posterior fat pad sign can be normal in obese patients. T/F
False - never normal
Children's soft tissues commonly avulse. T/F
Which three fracture types are unique to children?
What is a physis? Why is this important in relation to imaging?
Growth plate! Space between physis and epiphysis can mimic a fracture
Describe the Salter-harris classification of growth plate fractures
type 1 - S - straight across
type 2 - A - above
type 3 - L - lower
type 4 - T - through/two
type 5 - ER - erasure of growth plate (cRush)
Bones, soft tissues and bony alignment must all be checked even when an abnormality is found in one area. T/F
True - multiple problems common
If a bony ring is ruptured expect to see more than one fracture/soft tissue injury. T/F
True - examples include forearm, vertebrae and pelvis
When might you suspect pathological fracture?
When fracture seems out of proportion to injury velocity
How do scaphoid fractures present? Which sex more commonly gets them?
Pain in the anatomical snuff box
Where is the most common site for a scaphoid fracture? What is the risk?
Scaphoid waist (mid-scaphoid)
Surgical neck of the humerus fractures pose an injury to which nerve?
Axillary (badge patch injury)
A supracondylar fracture poses a risk to which artery?
What part of x-ray assessment is most important with regard to detecting a supracondylar fracture?
If a scaphoid fracture is suspected clinically but not seen on x-ray what is done?
Repeat x-ray after 10 days