Osteonecrosis of hip in COVID-19 survivors; A case series study.

Osteonecrosis or avascular necrosis (AVN) of the hip, is a condition where bone degenerates over time due to a disruption in blood supply. After Covid-19 pandemic, lots of complication secondary to covid-19 were reported, one of them is hip AVN, the Covid-19 induced hip AVN resulted as complication of Covid-19 and not a complication of steroids used in these patients. It is a case series consist of 4 cases that were Covid-19 survivors and presented with hip pain and diagnosed as BL hip AVN with history of steroid used in suboptimal doses that has not been reported to cause hip AVN. After confirmation of diagnosis as covid induced hip AVN and rule out other possible causes of hip pain, we did core decompression in 3 patients bilaterally and in 1 patient unilaterally and unilateral Total hip replacement in 1 patient as treatment modality. In covid-19 survivor with hip pain, Covid-19 induced hip AVN must be keep in mind as differential diagnosis.