what structure of the knee lubricates
The capsule is a thick, fibrous structure that wraps around the knee joint. Inside the capsule is the synovial membrane which is lined by the synovium, a soft tissue that secretes synovial fluid when it gets inflamed and provides lubrication for the knee.our bones make up the knee (see above image): 1  Tibia âcommonly called the shin bone, runs from the knee to the ankle. 2  The top of the tibia is made of two plateaus and a knuckle-like protuberance called the tibial tubercle.