Radiofrequency Ablation for Mucoid Degeneration of the Anterior Cruciate Ligament

Mucoid degeneration of the anterior cruciate ligament (MD-ACL) is an underdiagnosed ACL pathology. When recognized, one potential management strategy involves arthroscopic debridement to “debulk” the ACL. Here, with the addition of video footage, we describe our arthroscopic technique for MD-ACL debridement using radiofrequency ablation. We show the engorged, stranded MD-ACL during arthroscopy and how this engorgement causes impingement in the femoral notch, resulting in the symptoms described by the patient. After radiofrequency ablation, we show a reduction in impingement and assess the stability of the cruciate ligaments. This Technical Note aims to raise awareness of this pathology and show the technique of arthroscopic radiofrequency ablation to reduce impingement of the ACL within the femoral notch.