Her doctor, Dr. Shervin Oskouei knew exactly what had to come next for Gray: total knee replacement.

CNN: What you need to know about total knee replacement

In March, my mother underwent a total knee replacement, like at least six hundred thousand Americans each year.

NEWYORKER: Big Med

Having to undergo surgery was not good news for Gray, though total knee replacement surgery is among the most common surgeries performed today in the United States.

CNN: What you need to know about total knee replacement

It was time for a total knee replacement.

NEWYORKER: Big Med

He told me that after playing two games on a badly shredded knee, one that should have kept him off the field and one that will, undoubtedly, require a total knee replacement at some time, maybe soon.

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