title: Guyon canal: the evolution of clinical anatomy.
abstract: Guyon canal refers to the ulnar tunnel at the wrist named for the French surgeon Jean Casimir Félix Guyon, who described this space in 1861. After Guyon's description, clinicians have focused their interest on symptoms caused by compression of structures occupying this canal (later named ulnar tunnel syndrome or Guyon syndrome). However, disagreement and confusion persisted over the correct anatomical boundaries and terminology used to describe the ulnar tunnel. Through anatomical investigation and evolving clinical case studies, the current understanding of the anatomy of the ulnar tunnel was established. This article examines the evolution of the anatomical description of the ulnar tunnel and its relevant clinical associations and casts light on the life and contributions of Guyon.
authors.affiliation: Section of Plastic Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor, MI.
authors.forename: Brianna L
authors.initials: BL
authors.lastname: Maroukis
authors.affiliation: Section of Plastic Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor, MI.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Ogawa
authors.affiliation: Section of Plastic Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor, MI.
authors.forename: Shady A
authors.initials: SA
authors.lastname: Rehim
authors.affiliation: Section of Plastic Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor, MI. Electronic address: kecchung@med.umich.edu.
authors.forename: Kevin C
authors.initials: KC
authors.lastname: Chung
mesh_terms: D005075:Biological Evolution; D005602:France; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D014459:Ulnar Nerve / Q000033:anatomy & histology*; D017769:Ulnar Nerve Compression Syndromes / Q000266:history*; D014953:Wrist / Q000033:anatomy & histology*
keywords: Guyon canal; Jean Casimir Félix Guyon; pisohamate hiatus; ulnar tunnel; ulnar tunnel syndrome