(b)(4).This unsolicited case from united states was received on 19-jan-2018 from a non-healthcare professional.This case concerns an (b)(6) male patient who received treatment with synvisc one and later after unknown latency unable to walk at all/ can't ambulate, couldn't weight bare, severe pain, swelling and heat.Also device malfunction was identified for the reported lot number.No past drug, medical history, concomitant medication or concurrent condition was provided.On (b)(6) 2017, the patient initiated treatment with intra-articular synvisc one injection at a dose of 1 df once for knee pain (batch/lot number: 7rsl021, expiry date: 31-may-2020).On an unknown date in 2017, after unknown latency, the patient was unable to walk at all, could not ambulate, couldn't weight bare, had severe pain, swelling and heat.On an unknown date in (b)(6) 2017, the patient was bought to be checked on.He was given an anti-inflammatory.It was reported that the patient still couldn't walk.On (b)(6) 2018, the patient came back and had a steroid injection and that calmed it down.Reportedly, the patient still couldn't walk.As on (b)(6) 2018, the patient was doing better.Corrective treatment: not reported for device malfunction; anti-inflammatory; steroid for rest all the events.Outcome: recovering for all the events.Seriousness criteria: required intervention for all the events.Pharmacovigilance comment: sanofi company comment dated 25-jan-2018: this case concerns a patient who received treatment with synvisc one from recalled lot and later experienced weight bearing difficulty, was unable to walk, right knee pain, right knee swelling and joint warmth.Although exact event dates are not reported however, based on reported information a temporal relationship cannot be ruled out with the product administration.Furthermore, the concerned lot has been identified to have malfunction by the company.Therefore, the causal relationship of the events to the product cannot be excluded.
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