Ultrasound evaluation of infrapatellar fat pad impingement: An exploratory prospective study

We sought to determine whether there are ultrasound parameters that differ between knees with symptomatic fat pad synovial impingement and asymptomatic knees. A prospective study was performed in patients with clinical signs and symptoms of fat pad synovial impingement and asymptomatic controls. Ele...

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Bibliographic Details
Published in:The knee 2018-03, Vol.25 (2), p.279-285
Main Authors: Mikkilineni, Himabindu, Delzell, Patricia B., Andrish, Jack, Bullen, Jennifer, Obuchowski, Nancy A., Subhas, Naveen, Polster, Joshua M., Schils, Jean P.
Format: Article
Language:English
Subjects:
Compressibility
Fitness equipment
Hoffa fat pad
Impingement
Infrapatellar fat pad
Knee
NMR
Nuclear magnetic resonance
Pain
Patients
Statistical analysis
Studies
Surgery
Trauma
Ultrasonic imaging
Ultrasound
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Summary:We sought to determine whether there are ultrasound parameters that differ between knees with symptomatic fat pad synovial impingement and asymptomatic knees. A prospective study was performed in patients with clinical signs and symptoms of fat pad synovial impingement and asymptomatic controls. Eleven symptomatic knees and 10 asymptomatic controls were evaluated. Ultrasound imaging was performed before and after exercise. Evaluated parameters included largest fat lobule compressibility, subjective assessment of vascularity, largest vessel diameter, and subjective assessment of dynamic fat pad motion during flexion and extension. Receiver operating characteristic (ROC) curve analysis was used to assess whether changes in these parameters were different between symptomatic and asymptomatic knees. Change in the largest vessel diameter was greater and trended toward dilation in asymptomatic knees compared to symptomatic knees (mean: 0.83 vs. −0.02; P
ISSN:0968-0160
1873-5800
DOI:10.1016/j.knee.2018.01.008