In some cases the foot ulcer is so complicated that it's necessary to amputate.
From the sciencedaily.com
Why would Obama voluntarily amputate a few toes when the race hits the fall turn?
From the washingtonpost.com
He developed an infection and doctors have decided to amputate the foot today.
From the dailyherald.com
Robinson underwent surgery to amputate part of his right leg, his family said.
From the washingtonpost.com
Would they agree to amputate a child's legs to keep her lighter and more portable?
From the time.com
When lawmakers have to amputate $11 billion, schools better brace for a blow.
From the thenewstribune.com
His next memory was signing a release so doctors could amputate his left arm.
From the thenewstribune.com
I'm still waiting for somone to just tell me to amputate my left arm already.
From the edeneatseverything.com
Doctors feared they would have to amputate, but were able to control the infection.
From the fresnobee.com
More examples
Remove surgically; "amputate limbs"
(amputation) a condition of disability resulting from the loss of one or more limbs
(amputation) a surgical removal of all or part of a limb
Amputation is the removal of a body extremity by trauma or surgery. As a surgical measure, it is used to control pain or a disease process in the affected limb, such as malignancy or gangrene. In some cases, it is carried out on individuals as a preventative surgery for such problems. ...
(amputation) (am-pyoo-TAY-shun): Surgery to remove part or all of a limb or appendage.
(amputation) cut off (part of the body)
("Amputation") is defined as the surgical removal of an external body part. Although surgical removal of body parts like ears and breasts can technically be called amputations.
(AMPUTATION) Loss of adequacy; feeling dysfunctional or poorly equipped / Loss of whatever the limb represents
(AMPUTATION) Removal of a damaged limb of the body, popular medical treatment during the Civil War