Not only has the patient now lost his good leg, but he will be required to have the other limb amputated due to illness, leaving him without any legs.
"We are deeply shocked that on Tuesday, despite quality assurance standards, the wrong leg of an 82-year old man ... was amputated," the hospital said in a statement.
"Unfortunately the mistake, in which the right leg was removed instead of the left, occurred as a result of a sequence of unfortunate circumstances," the clinic said, adding that it was investigating what happened and would review its standards.
The patient has been offered psychological assistance and must still undergo another operation to remove his left leg from mid-thigh.
"The operation is planned shortly," the clinic said.