Intraosseous tumours of the knee

Area of Science:

• Orthopedic Oncology
• Musculoskeletal Radiology
• Diagnostic Imaging

Background:

• The knee is a frequent site for both neoplastic (tumors) and non-neoplastic bone lesions.
• These lesions can occur in subarticular regions or the metaphysis, potentially extending towards the knee joint.
• Certain tumors exhibit a predilection for the knee, while others lack specific anatomical preference.

Purpose of the Study:

• To review neoplastic and non-neoplastic lesions of the knee bones.
• To differentiate between lesions based on their location (subarticular vs. metaphyseal).
• To identify lesions commonly encountered in routine knee Magnetic Resonance Imaging (MRI) examinations.

Main Methods:

• Literature review focusing on knee bone lesions.
• Categorization of lesions based on anatomical location: subarticular and metaphyseal.
• Inclusion of lesions expected to be visible on standard knee MRI.

Main Results:

• Neoplastic and non-neoplastic lesions are common in knee bones.
• Lesions are classified by their origin: subarticular or metaphyseal extension.
• The review highlights lesions identifiable through routine knee MRI.

Conclusions:

• Understanding the common locations and appearances of knee bone lesions is crucial for diagnosis.
• Differentiating between neoplastic and non-neoplastic mimics on MRI aids in patient management.
• This review provides a framework for interpreting diverse knee bone pathologies on MRI.