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Trauma
intermediate
X-Type

Trochlea Fractures - Distal Humerus and Dubberley Classification

Elbow Fractures

A 35-year-old man falls from a ladder onto his outstretched arm with the elbow extended. He presents with a swollen, painful elbow and inability to flex. Radiographs and CT scan show an isolated coronal shear fracture of the trochlea with a single large articular fragment and no associated capitellum fracture. Regarding trochlea fractures:

Mark each as TRUE or FALSE

A

The trochlea is the medial articular surface of the distal humerus that articulates with the ulna at...

B

The mechanism of coronal shear fractures involves axial loading through an extended elbow with the f...

C

Trochlea fractures are easily diagnosed on standard AP and lateral radiographs; CT scan is unnecessa...

D

CT scan with 3D reconstruction is essential for trochlea fractures to characterise the fracture patt...

E

Displaced trochlea fractures require surgical treatment to restore articular congruity and elbow sta...

Answer the questions to see explanations

Click T (True) or F (False) for each option