The fat pad - or Hoffa's fat pad - is an area of cushioning fatty tissue behind the patellar tendon, but there are also other fat pads in the knee above the patellar area.
|The three main fat pads in the knee.||The Hoffa fat pad may be structurally connected to the infrapatellar plica and be stretched with movement.|
Suprapatellar, prefemoral and infrapatellar (Hoffa) fat pads
The most important fat pad in the knee is the infrapatellar fat pad, commonly called the Hoffa fat pad which cushions the vulnerable internal structures of the knee. There are two other fat pads that are significant, and they cushion the area behind the quads tendon in front of the femur. Because the fat pads are flexible, they change shape as the knee bends and straightens.
MRI Findings Consistent with Peripatellar Fat Pad Impingement: How Much Related to Patellofemoral Maltracking? Jarraya M, Diaz LE, Roemer FW, Arndt WF, Goud AR and Guermazi A. Magn Reson Med Sci. 2018; 17(3): 195–202.