On 10 june 2020, the physician reported an adverse event in a female patient that he injected with durolane for osteoarthritis in the knee in (b)(6) 2019.
One month post-injection, she developed skin changes and/or discolorations commensurate with nicolau syndrome.
A subsequent skin biopsy showed ha particles in the microvasculature.
The patient was successfully treated with hyaluronidase in the dermatology department.
All skin discolorations disappeared without further problems.
Based on the information available, the root cause of the reported event is most likely related to a very rare embolic event from the intra-articular cavity to the skin.
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