Fact checked by Nick Blackmer When my right knee ballooned to twice its normal size in the summer of 2016, I didn’t know it ...

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

Years of high school, college and semiprofessional football meant Layne Herber’s knees didn’t stand much of a chance. By the time Herber, 73, retired in 2015, he was relying on periodic cortisone ...