Posterolateral complex knee injuries: magnetic resonance imaging with surgical correlation

Area of Science:

• Orthopedic imaging
• Radiology
• Sports medicine

Background:

• Posterolateral knee injuries are complex and can involve multiple structures.
• Accurate diagnosis is crucial for effective management and patient outcomes.
• Magnetic resonance imaging (MRI) is a key modality for evaluating knee trauma.

Purpose of the Study:

• To detail the MRI characteristics of posterolateral knee injuries.
• To assess the diagnostic accuracy of MRI in identifying these injuries.

Main Methods:

• Retrospective review of MRI scans from 14 patients with posterolateral knee trauma.
• Correlation of MRI findings with surgical outcomes.

Main Results:

• MRI accurately identified injuries to the lateral collateral ligament (100%), biceps tendon (93%), and gastrocnemius tendon (100%).
• High accuracy was also observed for the popliteus tendon (86%), anterior cruciate ligament (79%), and posterior cruciate ligament (86%).
• MRI demonstrated injuries to the lateral and medial menisci (29%) and osteochondral defects (36%), with high diagnostic performance.

Conclusions:

• MRI is highly effective in visualizing and characterizing injuries to the posterolateral knee complex.
• The modality allows for accurate assessment of the extent and severity of damage to major knee structures.