Medically reviewed by Oluseun Olufade, MD Most back of the knee pain, known as posterior knee pain, comes from an injury.

Boston Red Sox first baseman Triston Casas was placed on the 10-day injured list with a ruptured left patellar tendon on Saturday. Casas left Friday night's game against the visiting Minnesota ...

Casas suffered a rupture of the patellar tendon in his left knee and will require surgery, Breslow said. An exact timetable for his return is unknown but the road to recovery is expected to be a ...

Red Sox manager Alex Cora called it "a significant knee injury" after Boston' 6-1 win over the Twins. Cora said Casas didn't fully understand what had happened as he was worked on by trainers. "It ...

Boston Red Sox first baseman Triston Casas suffered a ruptured left patellar tendon on a play at first base during Friday night's win over the Minnesota Twins (BOS 6, MIN 1), the team announced on ...

May 3 - Boston first baseman Triston Casas will require surgery and likely is done for the season after suffering a ruptured left patellar tendon, Red Sox head of baseball operations Craig Breslow ...

Boston Red Sox first baseman Triston Casas was placed on the 10-day injured list with a ruptured left patellar tendon Saturday. Casas left Friday night's game against the visiting Minnesota Twins on a ...