A Modified Arthroscopic Approach for Localized Pigmented Villonodular Synovitis in the Posterior Knee Compartment

Area of Science:

• Orthopedic Surgery
• Arthroscopy
• Musculoskeletal Oncology

Background:

• Localized pigmented villonodular synovitis (PVNS) of the posterior knee is challenging due to limited access.
• Traditional arthroscopic approaches may offer inadequate visualization or require multiple portals.

Purpose of the Study:

• To describe a modified arthroscopic technique for localized PVNS in the posterior knee.
• To enhance visualization and facilitate complete resection of PVNS in the posterior knee compartment.

Main Methods:

• Enlargement of the posteromedial portal for simultaneous arthroscope and instrument use.
• Utilizing a 70° arthroscope for improved visualization of the posterior knee.
• Employing curettage, shaving, and radiofrequency ablation for lesion removal.

Main Results:

• The modified technique provides enhanced visualization and maneuverability.
• Achieved complete resection of posterior knee PVNS with reduced invasiveness compared to traditional methods.
• Demonstrated potential for reduced operative time and suitability for surgeons with varying experience levels.

Conclusions:

• This modified arthroscopic approach offers a safe and effective method for managing posterior knee PVNS.
• The technique refines arthroscopic accessibility, enabling thorough lesion removal with minimal morbidity.
• It represents a reproducible surgical solution for localized pigmented villonodular synovitis in the posterior knee.