Knee Pain »
How is the knee designed, and what is its function?
The knee is a
joint that has three compartments. The thigh bone (femur) meets the large
shin bone (tibia) forming the main knee joint. This joint has an
inner (medial) and an outer (lateral) compartment.
The kneecap (patella)
joins the femur to form a third compartment, called the patellofemoral joint.
The knee joint is surrounded by a joint capsule with ligaments strapping
the inside and outside of the joint (collateral ligaments) as well as
crossing within the joint (cruciate ligaments). These ligaments provide
stability and strength to the knee joint.
The meniscus is a thickened
cartilage pad between the two joints formed by the femur and tibia. The
meniscus acts as a smooth surface for motion and absorbs the load of the body above the knee when standing. The knee joint
is surrounded by fluid-filled sacs called bursae, which serve as
gliding surfaces that reduce friction...
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