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AVASCULAR NECROSIS            

29th January, 2022

 

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Context

  • Many patients are being diagnosed with the long post-Covid complications of Avascular Necrosis (AVN), referred to as bone death.

 

Avascular necrosis

  • Avascular necrosis is the death of bone tissue due to a lack of blood supply.
  • Also called osteonecrosis, it can lead to tiny breaks in the bone and the bone's eventual collapse.
  • A broken bone or dislocated joint can interrupt the blood flow to a section of bone. Hip bones are more prone to this.

 

Why are the Covid-19 recovered patients developing AVN?

  • Primarily, there are two causes of AVN among such patients.
  • It could be because of excessive use of steroids during Covid-19 treatment or the inherent ability of Covid-19 to cause blood clots which disrupts the blood flow.

 

What are the symptoms of AVN?

  • A patient with AVN develops pain around the hip, joints and the movements get restricted.
  • The patients find it difficult to walk and may start limping. Also, they will exhibit pain around the knee and lower back.

 

Treatment

  • When the disease progresses in the first or second stage, core decompression surgeries are conducted.
  • When it reaches the third and fourth stages, then joint replacement surgeries are done.

 

https://indianexpress.com/article/explained/explained-aiims-study-post-covid-cases-avascular-necrosis-7746310/