December 8, 2015 - Radiology II Flashcards Preview

COURSE 2 > December 8, 2015 - Radiology II > Flashcards

Flashcards in December 8, 2015 - Radiology II Deck (12):

Pubic Rami Fracture

Common mimic of a broken hip.

Usually broken in two places (think of a pretzel)


Diastasis of Symphysis Pubis

Occurs with significant trauma to the pelvis.

Evaluate closely for diastasis of sacroiliac joints and associated fractures.


Hip Anatomy


Femoral head

Femoral neck

Greater trochanter

Lesser trochanter


Subcapital Fracture

Risk of avascular necrosis following a sub-capital fracture. The risk is directly related to the amount of displacement.


Hip Dislocations

May occur posteriorly (90%) or anteriorly (10%)

Classic mechanism is an unrestrained occupant in a motor vehicle accident and their flexed knee hits the dashboard with the hip flexed and adducted 

Associated with fractures of the posterior rim of the acetabelum.


Skyline View

Can be used to assess the patella in the knee.


In particular, you are observing the patellar articular surface and the femoral groove.



Horizontal beam lateral radiograph.

Indicates an intra-articular fracture. Bood and liquid fat are extreuded from medullary cavity into the joint space.


Patellar Fracture

Can occur vertically or transversely.

If vertically, this is less concerning than transversely. If the patella is fractured transversely, tendons attach to the top and bottom and may pull it apart.


Segond Fracture

Avulsion fractures of the lateral aspect of the proximal tibia below the articular surface.

Mechanism of injury is internal rotation and varus stress.

Highly accompanied by a tear of the ACL (75-100%) and of the medial and lateral meniscus (66-70%).


Trimalleolar Fracture

Occurs when the medial malleolus, lateral malleolus, and posterior malleolus are all broken in an injury.



Fifth Metatarsal Fracture

Very common.

Often a stress fracture.

Strong ligaments attach the base of the fifth metatarsal ot the cuboid bone and the fourth metatarsal bone. Because of the strong ligament attachments, it is easier for an individual to break or fracture the fifth metatarsal than to dislocate it.


Lisfranc Fracture-Dislocation

Tarsometatarsal fracture dislocation

Mechanism is severe plantar flexion of the foot or "folding" of midfood on the forefoot.

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