Infrapatellar fat pad syndrome | |
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Other names | Hoffa's disease [1] |
Cross section of the human knee | |
Specialty | Orthopedics, sports medicine |
Symptoms | Pain in the front of the knee [2] |
Causes | Trauma, surgery [1] |
Differential diagnosis | Patellar tendinopathy, infrapatellar bursitis [2] |
Treatment | Steroid injections, physical therapy, surgery [2] [1] |
Frequency | Relatively common (athletes) [2] |
Infrapatellar fat pad syndrome, also known as Hoffa's disease, is when pain in the front of the knee occurs due to problems with the infrapatellar fat pad. [2] Pain is generally just below the kneecap. [2] Symptoms may worsen if the knee is overly straightened or bent for too long a period. [2] Complications may include an inability to fully straighten the knee. [2]
The underlying mechanism may involve bleeding, inflammation, or insufficient space for the fat pad. [2] This may occur as a result of trauma or surgery to the knee. [1] Diagnosis may be supported by magnetic resonance imaging (MRI). [2]
Treatment is generally by steroid injections and physical therapy. [2] [1] If this is not effective surgery removal may be tried. [2] While overall it is an uncommon condition, [3] it is relatively common in athletes. [2]
Treatment is generally by steroid injections and physical therapy. [2] [1] If this is not effective surgery removal may be tried. [2] High quality evidence for surgery is lacking as of 2015. [3]