Imaging Findings at the Quadrangular Joint in Carpal Boss

Area of Science:

• Orthopedic Surgery
• Radiology
• Anatomy

Background:

• A carpal boss is a bony mass at the quadrangular joint, potentially causing pain.
• Diagnosis is typically made through clinical examination and plain radiography.
• Ultrasound (US) and computed tomography (CT) can provide additional imaging information.

Purpose of the Study:

• To review the anatomy and pathology of carpal boss.
• To evaluate the diagnostic value of various imaging modalities, particularly MRI.
• To correlate imaging findings with clinical presentation, especially pain.

Main Methods:

• Review of existing literature on carpal boss anatomy, pathology, and imaging.
• Analysis of the utility of plain radiography, US, CT, and MRI.
• Focus on MRI findings, including bony morphology and soft tissue pathologies.
• Correlation of bone marrow edema on MRI with painful carpal boss.

Main Results:

• Carpal boss is characterized by a bony mass at the quadrangular joint.
• MRI can reveal variable bony morphology and associated soft tissue pathologies.
• Bone marrow edema on MRI significantly correlates with painful carpal boss.
• MRI offers additional diagnostic value for persistent pain and preoperative assessment.

Conclusions:

• MRI is a valuable tool for diagnosing carpal boss, especially in cases of persistent pain.
• Imaging findings on MRI, such as bone marrow edema, are crucial for understanding pain etiology.
• A comprehensive understanding of imaging modalities aids in effective patient management.