Sometimes nothing: Bilateral means both sides. Depending on the completeness of your surgeon in his discussion with you, a laminotomy may refer to unilateral (one sided) or bilateral (both sided). Many minimally invasive surgeons (like myself) perform both sided laminotomy through a 1 sided exposure and hence dissect through less muscle. Both procedures involve removing a small piece of bone and ligament.
Answered 4/7/2017
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