The Allport Incus Hook, Angled 90° is a specialized surgical instrument used primarily in otologic and middle ear surgeries, particularly those involving the ossicles (small bones in the ear), such as the incus. The incus hook is used to manipulate or displace the incus bone or other delicate structures within the ear canal during procedures like ossiculoplasty, tympanoplasty, or ear surgeries related to hearing restoration.