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Norwalk surgeon first in Fairfield County to use custom-fitted knee prosthetics

By FRANCIS CARR Jr., Hour Staff Writer
Published 1:15 pm, Monday, February 1, 2016

Dr. Michael Lynch news image

NORWALK -- A Norwalk Hospital orthopedic surgeon is the first in Fairfield County to implement a new, hi-tech knee replacement procedure.

Working with a company called ConforMIS, Dr. Michael Lynch of the Norwalk Hospital Joint Replacement Center has begun offering a new type of knee replacement that uses a 3D printer to create femoral and tibial implants that are unique for each patient.

A standard knee replacement procedure, according to Lynch, usually involves reshaping the ends of a patient's femur and tibia so that the bones will fit one of several sizes of pre-made knee prosthetics.

Occasionally, there are problems with a one-size-fits-all prosthesis, Lynch said.

"If it overhangs (the knee bones), then a tendon might rub up against it," for example, Lynch told The Hour.

By contrast, a custom-fitted knee prosthetic could have a notch cut into it to avoid contact with the tendon, Lynch added.

In the new procedure, a CAT scan of the patient's knee is fed by ConforMIS into a 3D printer which fabricates a nylon mold that is then used to cast a metal prosthetic for the patient.

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