Brad: If it doesn't track properly, it either pulls to one side or to the other. It causes pain. And where the red tape is here is, typically, you can either have pain on the inside or medial, or the ...

The 33-year-old hasn't played an inning in the field since his return from the injured list but his troublesome left knee has passed every test.

Knee braces, hydrotherapy and exercise are some of the most effective ways to address arthritis-related knee pain and stiffness, a new study shows.

Boston Red Sox first baseman Triston Casas suffered a ruptured tendon in his left knee and is out for the remainder of the season, the team said.

Boston Red Sox first baseman Triston Casas suffered a ruptured tendon in his left knee and is out for the remainder of the season, the team said. The 25-year-old Casas ruptured his patellar tendon ...

Boston Red Sox first baseman Triston Casas has suffered a ruptured tendon in his left knee and is out for the remainder of the season.

BOSTON (AP) — Boston Red Sox first baseman Triston Casas suffered a ruptured tendon in his left knee and is out for the remainder of the season, the team said. The 25-year-old Casas ruptured his ...

Less than 48 hours after suffering a season-ending knee injury, Triston Casas had successful surgery Sunday at Mass. General.

Boston Red Sox first baseman Triston Casas suffered a ruptured tendon in his left knee and is out for the remainder of the season, the team said on Saturday.

The Red Sox announced on Sunday that Triston Casas underwent surgery to repair a torn patellar tendon at Mass. General Hospital.