knee is an engineering marvel, an intricate combination of bones, muscles,
tendons, ligaments and soft tissue.
The largest joint in your body, the knee
is the juncture of your thigh bone (femur) and shin bone (tibia). The two
are connected to each other and to the front-facing kneecap (patella) by a
complex network of muscle and connective tissue.
One Size Does Not Fit All. Patients come in all sizes and shapes, and their
inside anatomy also comes in all sizes and shapes.
Although the knee is described as a "hinge
joint," that image is a little misleading. The bones don't actually
interlock with each other, but instead meet end-to-end, buffered by a cushion
of smooth cartilage. An oily fluid (called synovial fluid) lubricates the
joint surfaces to help keep them friction-free. Ligaments and muscles control
the joint's main motions, flexion (bending) and extension (straightening).
knee implants are manufactured to fit a wide range of different sized
anatomy. In fact, we even have a customs department dedicated to adapting
implants to either very small or very large patient anatomy. Wright constantly
strives to understand patient and surgeon needs in order to design implants
that fit the patient's disease state, perform as closely as possible to
the natural knee, and wear well -- all to help patients take back their