He also did the first operation for complete removal of a cerebellopontine angle tumor, as well as being one of the first surgeons to perform a radical mastoidectomy with ligation of the jugular vein. Ballance is also remembered for successfully sectioning the vestibulocochlear nerve (cranial nerve VIII) as a remedy for intractable vertigo.
He also pioneered the first comprehensive tumor removal from the cerebellopontine angle, as well as being one of the pioneering surgeons to perform a radical mastoidectomy with ligation of the jugular vein. Ballance is also remembered for successfully severing the vestibulocochlear nerve (cranial nerve VIII) as a treatment for intractable vertigo.