To open the joint posteriorly make an incision through the capsule posterior to the tibial collateral ligament.

To check an egg for chromosomal abnormalities, doctors use a laser to make a small incision in the outer membrane, which allows them to extract the polar body and the chromosomes it contains.

Others prefer an "open" procedure, especially in more complicated cases; they make a small incision across the columella, the vertical strip of tissue separating the nostrils.