title: [Arthroscopic procedure for Baker's cysts : surgical technique. Video article].
abstract: BACKGROUND
  Baker's cysts are related to increased intra-articular pressure. The causes may be inflammatory, degenerative or traumatic disorders. Owing to the increased intra-articular pressure a cyst protrudes between the semimembranosus and the medial gastrocnemius tendons. The traditional treatment for a Baker's cyst is open resection. As an alternative, an arthroscopic procedure can be performed, which is demonstrated by the video on surgical technique that accompanies this short report.
  
  
  METHODS
  From the anterolateral portal the arthroscope is advanced through the intercondylar notch (below the posterior cruciate ligament) to the posteromedial recess. Under visual control, a posteromedial portal is created followed by identification of the capsular fold separating the cyst from the joint cavity. This fold (valvular mechanism) is resected with a shaver from the posteromedial portal until a large enough connection exists between the joint and the cyst (cyst decompression). After the decompression, the arthroscope is inserted from the posteromedial portal directly into the cyst cavity. Subsequently, the inner wall of the cyst is removed with the shaver via an additional far posterior cystic portal. It is obligatory to treat the associated intra-articular pathological condition. In our video a medial meniscal lesion is treated with partial meniscectomy.
authors: Universitätsklinik für Orthopädie, Medizinische Universität Innsbruck, Innsbruck, Österreich.
authors: M C
authors: MC
authors: Liebensteiner
authors: Universitätsklinik für Orthopädie, Medizinische Universität Innsbruck, Innsbruck, Österreich.
authors: M
authors: M
authors: Thaler
authors: Universitätsklinik für Orthopädie, Experimentelle Orthopädie, Medizinische Universität Innsbruck, Innsbruck, Österreich. david.putzer@i-med.ac.at.
authors: D
authors: D
authors: Putzer
authors: Universitätsklinik für Orthopädie, Medizinische Universität Innsbruck, Innsbruck, Österreich.
authors: A
authors: A
authors: Wurm
authors: Universitätsklinik für Orthopädie, Experimentelle Orthopädie, Medizinische Universität Innsbruck, Innsbruck, Österreich.
authors: M
authors: M
authors: Nogler
mesh_terms: D001182:Arthroscopy / Q000379:methods*; D003131:Combined Modality Therapy / Q000379:methods; D019299:Decompression, Surgical / Q000379:methods*; D006801:Humans; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D011151:Popliteal Cyst / Q000175:diagnosis / Q000601:surgery*; D020127:Recovery of Function; D016896:Treatment Outcome
keywords: Intermittent claudication; Knee Joint; Popliteal cyst; Surgical decompression; Thrombophlebitis