Presentation
Anterior knee pain and swelling.
Patient Data
fluid-filled sac is seen anterior to the patella which displays low T1 and bright PD fat sat signal intensity
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other findings:
medial femoral and tibial full-thickness cartilaginous defects with sub-chondral bone marrow edema (osteorthritis)
mild knee joint effusion
mild degenerative changes of the posterior horn and the body of the medial meniscus
ganglion cyst of the popliteus tendon
Case Discussion
Prepatellar bursitis (a.k.a housemaid's knee) refers to inflammation and fluid collection within the prepatellar bursa anterior to the patella.
It can be either acute due to infection or direct trauma, or chronic caused by overuse or friction from activities where you sit on your knees for long periods of time (hence the appellation housemaid's knee).
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