Arthroscopic treatment of a medial meniscal cyst using a posterior trans-septal approach: a case report

Abstract

Arthroscopic partial menisectomy followed by cyst decompression is currently recommended for treatment of a meniscal cyst. However, it is doubtful whether partial menisectomy should be performed on cysts communicating with the joint in cases without a meniscal tear on its surface since meniscal function will be sacrificed. In this report, a meniscal cyst arising from the posterior horn of the medial meniscus without meniscal tear on its surface was resected using an arthroscopic posterior trans-septal approach. A 59 year-old male presented to our hospital with popliteal pain when standing up after squatting down. Magnetic resonance imaging revealed a multilobulated meniscal cyst arising from the posterior horn of the medial meniscus extending to the posterior septum with a grade 2 meniscal tear by Mink's classification. The medial meniscus was intact on the surface on arthroscopic examination. The meniscal cyst and posterior septum were successfully resected using a posterior trans-septal approach without harming the meniscus. This is the first report on a meniscal cyst being resected using an arthroscopic posterior trans-septal approach with a 9-month follow-up period.

An Intra-tendonous ganglion cyst causing impingement between the anterior cruciate ligament and anterior root of the medial meniscus: a case report

“…There are several reports of symptomatic ganglion cysts near the anterior cruciate ligament, posterior cruciate ligament, and lateral and medial menisci [8,9]. In particular, we did not find any reports of a symptomatic ganglion originating from the anterior root of the MM to the ACL.…”

Arthroscopic Debridement of the Posterior Compartment of the Knee after Total Knee Arthroplasty

“…More attention should be paid to posterior capsule injury in the knees of patients who are undergoing TKA when creating a transseptal portal. One of the advantages of our procedure for creating a transseptal portal is that it can be done when the septum is monitored from the posteromedial portal for confirming the proper site, and the sheath can protect the posterolateral capsule where the popliteal vessels are located immediately behind it [ 17 ]. To avoid popliteal vessel injury, the posterior transseptal portal should be created via the inferoanterior aspect of the septum.…”

Unusual Presentation of Popliteal Cyst on Magnetic Resonance Imaging

“…Synovial proliferation was observed in the suprapatellar pouch and gutters of both sides, which were excised. To access the popliteal cyst, a transseptal portal was made after creating posteromedial and posterolateral portals using our technique [3]. Synovial proliferation also was observed in the posteromedial and posterolateral compartments.…”