Your hands are mechanical marvels, with pulleys — in the form of tendons — flexing and extending to open and close your fist, and straighten and bend your fingers. Each tendon is wrapped in a sheath ...
“One morning, I woke up and my finger was stuck in a bent position,” says Risa Pulver, who’s lived with type 1 diabetes for 35 years. “I had to physically unbend it.” This was just a few years ago, ...
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