After the injection her knee blew up immediately, that she iced the knee for 2 days, had swelling, a big lump on the left side of the knee [swelling of l knee] pain so she iced it for 2 days/painful for a month [aching (l) knee] who drained the fluid [knee effusion] she couldn't walk for a month [unable to walk].Case narrative: initial information received on 15-oct-2021 regarding an unsolicited valid serious case received from a consumer/non-hcp from united states.This case involves (b)(6) female patient who reported that after the injection her knee blew up immediately, that she iced the knee for 2 days, had swelling, a big lump on the left side of the knee, pain so she iced it for 2 days/painful for a month, she couldn't walk for a month and who drained the fluid with the use of medical device hylan g-f 20, sodium hyaluronate [synvisc one].The patient's past medical history, medical treatment(s), vaccination(s) and family history were not provided.On (b)(6) 2021, the patient started using hylan g-f 20, sodium hyaluronate solution for injection at a dose of 6 ml once (route, strength, batch number and expiry date: unknown) for osteoarthritis.On (b)(6) 2021 the patient knee blew up immediately, that she iced the knee for 2 days, had swelling, a big lump on the left side of the knee (joint swelling; seriousness: intervention required; latency: same day) and had pain so she iced it for 2 days but the swelling didn't go down (arthralgia; seriousness: intervention required; onset: (b)(6) 2021 and latency: few days).It was reported that patient could not walk (gait inability; onset: (b)(6) 2021 and latency: few days).On an unknown date in (b)(6) 2021, the patient went back to her doctor who drained the fluid (joint effusion; seriousness: intervention required and medically significant; latency: unknown), gave her cortisone and now she was much better.Patient reported that she was never getting the injection again.Action taken: not applicable for all events.Corrective treatment: cortisone and ice for joint swelling; arthralgia and joint effusion; not reported for gait inability.Outcome: recovering for all events.
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