What is glenoid version?
Glenoid version (α) is calculated as the angle between the glenoid line and the line perpendicular to the scapular axis (red dashed line). (A) The conventional method for measuring a normal shoulder. The scapular body is waving. CT arthrograms are used to measure glenoid version, and the glenoid has 28.3° retroversion.
How is glenoid version measured on MRI?
To assess glenoid version, a line was drawn from medial corner of the glenoid body to midpoint of the glenoid face. A line perpendicular to this was the reference against which to measure glenoid version. Measurements were repeated after 3 months to assess intra- and interobserver reliability.
What is a Hill Sachs defect?
A Hill-Sachs lesion is a fracture in the long bone in the upper arm (humerus) that connects to the body at the shoulder. You doctor might have discovered this condition if you’ve experienced a dislocated shoulder. In this case, the arm bone slips out of the socket and is compressed against the socket’s rim.
What is a glenoid labrum?
The glenoid labrum is fibrocartilaginous tissue within the glenoid cavity of the shoulder joint. The purpose of the glenoid labrum is to provide stability and shock absorption within the joint.
How is the glenoid line measured on a CT scan?
Glenoid version is measured on axial CT or MR scans as the angle between the glenoid and scapular lines: glenoid line: at the mid-glenoid level, joins the anterior and posterior margins of the glenoid rim scapular line: joins the midpoint of the glenoid line to the medial tip of scapular blade the range of normal 2 is 0-7°
What is the range of the glenoid version?
Glenoid version: range of normal is 0-7 o neutral version is 0 o retroversion is > 7 o which is associated with posterior glenohumeral instability and posterior labral tears
What kind of imaging is used for glenoid bone loss?
To investigate the agreement among magnetic resonance (MR) imaging, computed tomography (CT), and arthroscopy in the measurement of glenoid bone loss. This study was approved by the institutional ethics committee.
What causes glenoid dysplasia on a CT scan?
Causes may be developmental, such as glenoid dysplasia, or secondary to trauma or osteoarthritis, especially in throwing athletes. Glenoid version is measured on axial CT or MR scans as the angle between the glenoid and scapular lines: Using this technique with CT 3D reconstructions is recommended if there is an abnormal scapulothoracic position.