Michelle Tagliamonte, 58, was getting a manicure when she noticed the black lines on her thumb, which signaled the start of a fast-spreading cancer.

The base of the thumb—called the carpometacarpal joint, or CMC—is a common site for arthritis. Osteoarthritis (OA) can develop in the thumb. This condition gradually occurs from joint wear and ...

(Crucially, male index fingers are short relative to the ring fingers, so they fit snugly behind the bulge of muscle at the thumb’s base; in women, the second and fourth fingers are typically ...

A repetitive stress injury (RSI) to the thumb due to excessive video game playing. It causes a swelling at the base of the thumb. Coined in the 1990s, this malady also affects people who use their ...

The update is in on Colton Cowser’s injured thumb and it’s bad. The Orioles announced on Monday morning that Cowser has been ...

BALTIMORE—The Orioles on Monday placed outfielder Colton Cowser on the 10-day injured list with a fractured left thumb.