Bursen des Kniegelenks

MRI

characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. Suprapatellar bursa. The sagittal (a) and coronal (b) fat saturated proton density weighted images shows the suprapatellar bursa (white arrow) with a partially perforated suprapatellar plica (black arrow)

MRI

characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. Deep infrapatellar bursitis. The sagittal fat saturated proton density weighted image demonstrates a small fluid collection in the deep infrapatellar bursa (arrow), between the distal patellar tendon and the tibia

MRI

characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. Pes anserinus bursitis. The axial (a) and coronal (b, c) fat saturated proton density weighted images show a cystic fluid collection (noted with asterisk in a and arrows in b, c) located between the medial aspect of the tibia and the pes anserinus tendons: sartorius muscle (grey arrow), gracilis tendon (white arrow) and semitendinosus tendon (black arrow). T tibia

MRI

characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. MCL bursitis. The coronal fat saturated proton density weighted image demonstrates a small fluid collection between the deep MCL (meniscofemoral ligament: grey arrow, meniscotibial ligament: black arrow) and the superficial portion (white arrow) of the MCL

MRI

characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. Semimembranosus-medial collateral ligament bursitis. The axial (a–d) fat saturated proton density weighted images show a fluid distended semimembranosus–MCL bursa (white arrow). In contact with the semimembranosus-MCL bursa a small Baker cyst is demonstrated (black arrow). In image (b) the lesion takes the typical configuration of a distended semimembranosus-MCL bursa, that of an inverted U

MRI

characteristics of cysts and “cyst-like” lesions in and around the knee: what the radiologist needs to know. LCL bursitis. The axial (a) and coronal (b) fat saturated proton density weighted images show a fluid collection in the dilated LCL bursa (asterisk). The white arrow points to LCL and the black arrow points to biceps femoris tendon