In humans and other primates, the knee joins the thigh with the leg and consists of two joints: one between the femur and tibia (tibiofemoral joint), and...

The Wounded Knee Massacre, also known as the Battle of Wounded Knee, was the deadliest mass shooting in American history, involving nearly three hundred...

A knee scooter or knee walker is a two-, three- or four-wheeled alternative to crutches or a traditional walker as an ambulation aid. It is known by many...

Knee effusion, informally known as water on the knee, occurs when excess synovial fluid accumulates in or around the knee joint. It has many common causes...

The Wounded Knee Occupation, also known as Second Wounded Knee, began on February 27, 1973, when approximately 200 Oglala Lakota (sometimes referred to...

Knee replacement, also known as knee arthroplasty, is a surgical procedure to replace the weight-bearing surfaces of the knee joint to relieve pain and...

Knee pain is pain in or around the knee. The knee joint consists of an articulation between four bones: the femur, tibia, fibula and patella. There are...

A knee wall is a short wall, typically under three feet (one metre) in height, used to support the rafters in timber roof construction. In his book A Visual...

A bees knees (or bee's knees) is a Prohibition era cocktail made with gin, fresh lemon juice, and honey. It is served shaken and chilled, often with a...

be an adventurer like you. Then I took an arrow in the knee...", or simply "arrow in the knee", is an Internet meme that originated from The Elder Scrolls...