In 11 patients the diagnosis of Hoffa's syndrome with chronic impingem
ent of the fat pad was established by clinical signs and arthroscopic
findings. Arthroscopic resection of the fat pad was performed. The pat
ients were assessed using the Cincinnati rating system. There was a si
gnificant improvement in their symptoms and function after the surgery
at an average follow-up of 76 months. The one poor result was in a pa
tient who subsequently developed a diffused, chronic, inflammatory syn
ovitis.