Large lateral meniscal ganglion cyst extending into the intercondylar fossa of the knee

Intercondylar Notch Pathology

The intercondylar notch of the knee is a relatively small area. However, numerous rare pathologies can arise in this region. A majority of the existing literature has focused on the cruciate ligament injuries, yet there are several other entities that can cause knee pain from within the intercondylar notch. This review focuses on identifying the various diagnostic and treatment options for rare benign and malignant lesions including ganglion cyst formation, mucoid degeneration, benign proliferative conditions, and intra-articular tumors. These entities are most often diagnosed with advanced imaging studies and treated arthroscopically. While rare, these pathologies are important to identify in patients with ongoing vague knee pain.

Arthroscopic excision of the ganglion in the posterior septum by posterior trans-septal portal: report of two cases

We report two cases of ganglion cysts in the posterior septum of the knee joint, one as parameniscal cyst from the posterior horn of the lateral meniscus extending to posterior septum, and the other as a cyst located in the posterior septum adjacent to the posterior cruciate ligament, which were both arthroscopically excised expediently by posterior trans-septal portal. The posterior compartment of the knee is not readily accessible by ordinary arthroscopic portals, and therefore has been considered as 'blind spot' conventionally. The posterior trans-septal portal is useful for assorted diagnostic or manipulative procedures in the posterior compartment of the knee.

An unusual meniscal ganglion cyst that triggered recurrent hemarthrosis of the knee

A 58-year-old woman suffered spontaneous recurrent hemarthrosis of the knee. In the clinical course, pigmented villonodular synovitis was mostly suspected, but in arthroscopic surgery the lateral meniscus appeared to be upturned and stuck into the lateral pouch with the meniscal ganglion cyst. It was suggested that meniscal tear with meniscal ganglion cyst was related with recurrent hemarthrosis. Generally, both the meniscal ganglion cysts and spontaneous recurrent hemarthrosis are highly rare conditions. In this case, we speculated that a negligible power could induce the meniscal tear with recurrent hemarthrosis in the particular situation in which the meniscal ganglion cyst existed. In other words, the meniscal ganglion cyst might basically and physically relate with hemorrhagic condition. Arthroscopically, the meniscal ganglion cyst was removed together with the anterior segment of the lateral meniscus. Recurrent hemarthrosis was treated successfully by resection of the meniscus.