[External synovial fistula of the infrapatellar bursa following arthroscopic meniscus resection. A clinical case report and topographic-anatomic study].

Following arthroscopic meniscectomy a 41-year old patient developed an external synovial fistula in the area of the central joint approach with a communication to the deep intrapatellar bursa. Anatomical preparations performed on 20 knee joints revealed extraordinary variations in the dimension of the infrapatellar bursa with a mean longitudinal diameter of 24 mm and a transversal diameter of 38 mm. The distance between bursa and the distal margin of the patella measured 15 to 39 mm.