Glenoid Fracture

Glenoid fractures are usually the result of blunt trauma to the upper extremity. Subtle fractures can be difficult to detect on conventional radiographs; CT may be required for full diagnosis. A special glenoid fracture is termed the Bankart fracture. This consists of fracture of the inferior lip of the glenoid during anterior shoulder dislocation.
A Axial CT. This image through the glenoid shows a comminuted intraarticular fracture.

B Axial CT. This also shows the comminuted intraarticular fracture of the glenoid.

C Axial CT. This image shows a Bankart fracture.

D Axial CT. This image demonstrates the anteriorly dislocated humeral head, the source of the Bankart fracture

Links to online textbooks

Wheeless' Orthopedics: discussion of glenoid fractures

References:

DiChristina DG: Imaging rounds. Anterior subluxation of the shoulder with a Hill-Sachs lesion and an osseous Bankart lesion Orthop Rev. 1992 Apr;21(4):507-12. [See related articles]
Pavlov H, Warren RF, Weiss CB Jr, Dines DM: The roentgenographic evaluation of anterior shoulder instability Clin Orthop. 1985 Apr;(194):153-8. [See related articles]

A	Axial CT. This image through the glenoid shows a comminuted intraarticular fracture.
B	Axial CT. This also shows the comminuted intraarticular fracture of the glenoid.
C	Axial CT. This image shows a Bankart fracture.
D	Axial CT. This image demonstrates the anteriorly dislocated humeral head, the source of the Bankart fracture