Popliteal cysts are known to be associated with intra-articular pathology, which must be addressed to prevent cyst recurrence. Indications for popliteal cyst excision include cases in which the popliteal cyst does not respond to conservative treatment or arthroscopic intervention or cases in which an underlying cause cannot be found. Several techniques have been described to excise these cysts. Traditionally, open techniques have been associated with cyst recurrence. More recently, arthroscopic cystectomy has been described. However, the risk of recurrence persists because arthroscopy may not afford complete surgical excision. This technical note presents an open posterior technique for popliteal cyst excision that allows for better visualization and complete removal of the cyst while minimizing the risk of neurovascular complications and soft-tissue damage. It is a safe, effective, and straightforward method to achieve symptomatic relief for refractory popliteal cysts.P opliteal cysts, also known as Baker cysts, are fluidfilled structures with a synovial lining typically located between the medial head of the gastrocnemius muscle and semimembranosus tendon. Although some popliteal cysts maintain a unidirectional valve communication with the joint cavity, preventing shifting of fluid from the cyst back into the knee joint, others communicate freely. 1 They can occur due to intraarticular pathology, including meniscal and anterior cruciate ligament tears, chondral lesions, and synovitis. 2 The underlying or associated intra-articular pathology must be addressed to prevent recurrence of the cyst.Surgical removal of popliteal cysts is indicated in rare cases when the cyst remains symptomatic despite treatment of intra-articular pathology or if no underlying cause is found. Historically, open surgical excision has been performed through a posterior approach or posteromedial approach. 1,3 Arthroscopic closure of the valve without removal of the cyst has shown poor results. [4][5][6] Arthroscopic valve closure with cyst excision has been described through a posteromedial cyst portal with good preliminary results. 7,8 However, there is still no surgical standard of care for patients with refractory cysts, and concern for recurrence persists.This technical note presents an open posterior technique for popliteal cyst excision that allows for complete removal of the cyst while minimizing the risk of neurovascular complications and soft-tissue damage. It is a safe, effective, and simple method to achieve symptomatic relief for refractory popliteal cysts.
Surgical TechniqueThis technique is indicated for cases in which the intra-articular pathology associated with popliteal cysts has been corrected and patients continue to have symptoms from the popliteal cyst without an associated intra-articular lesion. Popliteal cyst excision is always preceded by knee arthroscopy to evaluate for recurrent intra-articular pathology. Popliteal cyst excision is not recommended as a first-line treatment for symptomatic knees. Most...