A (b)(6) yr old male with right knee chondromalacia, right knee osteoarthritis, right knee chondral defect.Previously seen by me and had undergone 2 prior platelet rich plasma injections in the past on (b)(6) 2019 and on (b)(6) 2018 and did extremely well afterwards with great relief of his pain.We completed a 3rd prp injection to the right knee joint under ultrasound guidance which went well and was done with sterile technique.He did well for first few days.However then had increased pain and swelling without redness, warmth or fevers or chills.Fluid was drained and sent for analysis and thought to be a pseudoseptic inflammatory reaction.Culture later grew out staph lugdunensis after a few days in thio broth tube only, and thought to be skin contaminant.He did not improve and was sent to er.Seen by ortho and also thought to be an inflammatory reaction.Pain continued and knee was once again drained and eventually grew out staph lugdunensis and sent back to the er.Seen by infectious disease who thought was septic arthritis.He underwent surgical washout and was treated with a prolonged course of iv antibiotics.Fda safety report id # (b)(4).
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