Ozkur A, Adaletli I, Sirikci A, Kervancioglu R, Bayram M
Department of Radiology, University of Gaziantep, 27310, Gaziantep, Turkey.
Surg Radiol Anat. 2005 Mar;27(1):61-3. doi: 10.1007/s00276-004-0275-6. Epub 2004 Aug 13.
The infrapatellar fat pad of Hoffa is a structure that is located in the space between the back side of the patellar ligament and the real capsule. It is routinely visualized on magnetic resonance (MR) images of the knee. The purpose of this study was to determine the prevalence and shape of a fluid-like indentation at the inferior posterior margin of the infrapatellar fat pad of the knee (recess) and to look for a relation between the liquid image in the fat pad and joint effusion. Three hundred and fifty consecutive MR imaging examinations of the knee were evaluated for the presence, location, size and shape of a recess in the infrapatellar fat pad and existence of joint effusion. The study population consisted of 145 females and 205 males aged between 5 and 80 years old (mean age 37.5 years). The recess in the infrapatellar fat pad was revealed on MR imaging in 54 of 350 knees (15.43%) and had a variable shape, consisting of 35 linear or ovoid (64.81%), five pipe-shaped (9.26%) and 14 globular (25.92%). Additionally, one ganglion cyst was observed in the infrapatellar fat pad. Globular and pipe-shaped recesses may be confused with cystic infrapatellar fat pad pathologies such as ganglion cyst, meniscal cyst, loose body or nodular synovitis. The existence of an infrapatellar fat pad may not be related to the presence of joint effusion.
Hoffa髌下脂肪垫是位于髌韧带后侧与真正关节囊之间间隙的一种结构。在膝关节的磁共振（MR）图像上通常可以看到它。本研究的目的是确定膝关节髌下脂肪垫（隐窝）下后缘类似液体的压痕的发生率和形状，并寻找脂肪垫内液体影像与关节积液之间的关系。对连续350例膝关节MR成像检查评估髌下脂肪垫隐窝的存在、位置、大小和形状以及关节积液的情况。研究人群包括145名女性和205名男性，年龄在5至80岁之间（平均年龄37.5岁）。在350例膝关节的MR成像中，有54例（15.43%）显示出髌下脂肪垫隐窝，其形状各异，包括35例线性或椭圆形（64.81%）、5例管状（9.26%）和14例球状（25.92%）。此外，在髌下脂肪垫中观察到1例腱鞘囊肿。球状和管状隐窝可能会与髌下脂肪垫的囊性病变如腱鞘囊肿、半月板囊肿、游离体或结节性滑膜炎相混淆。髌下脂肪垫的存在可能与关节积液无关。
