Local injection with local anaesthetic and corticosteroid and sclerotherapy is a consideration for chronic cases
Operative management:
Bursa excision in select chronic cases
Infected Prepatellar bursa requires antibiotics and surgical incision and drainage. Staphylococcus Aureus is responsible for 80% of the infection.
Aspiration of Prepatellar bursa
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References
Common Superficial Bursitis. Morteza Khodaee, Am Fam Physician. 2017 Feb 15;95(4):224-231.
Management of septic bursitis. Christian Lormeau, Gregoire Cormier, Johanna Sigaux, Cedric Arvieux, Luca Semerano. Joint Bone Spine. 2019 Oct;86(5):583-588.