Endoscopic excision of a ganglion cyst in an infrapatellar fat pad extending into the subcutaneous layer

Excerpt

Less than 30 cases of intra-articular ganglion cysts of the knee were reported up to 1996 [1], but the widespread use of magnetic resonance imaging (MRI) and arthroscopy for knee disorders since then has resulted in a higher detection rate. However, ganglion cysts in the infrapatellar fat pad are rarely reported [2‐4], and the subcutaneous extension of a cyst into the milieu of the patellar tendon may be even more rare. In fact, we did not find any detailed report of such a lesion in the literature. Here, we report a patient with a communicating ganglion cyst, which presented as a mass adjacent to the patellar tendon that was treated by endoscopic cystectomy and orifice closure. We believe that the provision of information on preoperative MRI findings will facilitate decision making regarding the possibility of an arthroscopic cystectomy procedure. The patient was informed that the data concerning the case would be submitted for publication and consented. …