Glenoid hypoplasia: assessment by computed tomographic arthrography.

Area of Science:

• Orthopedics
• Radiology
• Skeletal Dysplasias

Background:

• Congenital skeletal anomalies can impact joint development and function.
• Glenoid hypoplasia is a rare condition affecting shoulder joint formation.
• Accurate diagnosis is crucial for understanding clinical significance and pathogenesis.

Purpose of the Study:

• To present four cases of isolated bilateral glenoid hypoplasia.
• To discuss the potential pathogenesis and clinical implications of this anomaly.
• To evaluate the utility of computed tomographic arthrography in diagnosing glenoid hypoplasia.

Main Methods:

• Case series presentation of four patients with isolated bilateral glenoid hypoplasia.
• Bilateral computed tomographic (CT) arthrography of the shoulder was performed.
• Analysis of imaging findings, including cartilage morphology and joint configuration.

Main Results:

• Computed tomographic arthrography revealed inferior glenoid cartilage thickening in two cases.
• The technique successfully identified a contrast-filled cleft within posterior cartilage in one symptomatic shoulder.
• CT arthrography accurately depicted glenohumeral joint configuration in a severely deformed case, surpassing plain radiographs and conventional arthrography.

Conclusions:

• Isolated bilateral glenoid hypoplasia is an uncommon congenital skeletal anomaly.
• Computed tomographic arthrography is a valuable diagnostic tool for glenoid hypoplasia, especially in complex or severe cases.
• This imaging modality aids in understanding the morphology and potential pathologies associated with glenoid hypoplasia.