Also known as infrapatellar fat impingement
Infrapatellar fat pad impingement due to trauma
Edema/hypertrophy/hemorrgae/necrosis/calcium of the Hoffa's fat
Clinical features:
Anterior knee pain, swelling, limited movements
Positive Hoffa's sign
MR:
Large portion of whole of Hoff'a fat shows abnormal signal and morphology
Bowing of the patellar tendon
a/w effusion
inflammatory/ fibrous/ hemorrhagic/ fibrocartilagenous/ calcific/ rarely ossific
Intervention:
USG guided injection from the lateral approach is used
References:
1.Resnick et al. Internal dergangements of joints. 2nd edition. Saunders Elsevier. 2007
2. Peace KAL et al. Imaging the infrapatellar tendon in the elite athlete. Clin Rad (2006) 61, 570-578
