After Six Years of Pain, Montana Woman Finds Relief and Joy Through Expert Knee Surgery

A buzz of children zips around their grandma, their energy is overflowing and infectious. It's clear they love it at her house. They are over there three times a week.

Their grandma, Meg Bristol, gets up and down to help them find snacks, water or the toys they want, then she pulls them onto her lap for a story. The movements it takes to cater to the beelines that circle her, are basic - bending, walking, going up stairs - but they are done with intention and gratitude.

"The last year and a half, I was limited to hardly doing anything. The pain going up to my hip just because of the knee, it w...