Miami Dolphins linebacker Bradley Chubb (2) grabs his knee after an injury during the game against the Baltimore Ravens in the fourth quarter at M&T Bank Stadium in Baltimore, Maryland on Sunday, Dec.

Chondromalacia patella occurs when the cartilage of a person’s kneecap softens. It is common in athletes of high impact sports or those who have arthritis in their knees. Chondromalacia patella is ...

The A’s announced on Friday afternoon that young outfielder Lawrence Butler had undergone right patellar knee surgery, which was deemed a success: The announcement of actual surgery comes as a bit of ...

Some individuals who have had anterior-cruciate-ligament reconstruction (ACLR), the kind of surgery often performed on athletes’ knees, may develop early-onset knee osteoarthritis. A new study in the ...