title: Aberrant muscle syndrome: hypertrophy of the hand and arm due to aberrant muscles with or without hypertrophy of the muscles.
abstract: Five patients were reported in our congenital anomaly registry who had six hands in total with muscular hyperplasia, aberrant muscles, ulnar drift of the fingers in the metacarpophalangeal (MP) joints, flexion contractures of the MP joints, and enlargement of the metacarpal spaces. Thirty patients with unilateral involvement of this condition have been reported previously. We reviewed these cases and found that the condition varied in severity and that it was reported using different names. However, this condition seems different from true macrodactyly and multiple camptodactyly, including windblown hand, and seems to be an isolated entity of congenital upper limb anomaly. The authors recommend 'aberrant muscle syndrome' or 'accessory muscle syndrome' as a diagnostic name, because this seems to be the most common pathological finding in this condition.
authors.affiliation: Department of Orthopaedic Surgery, Yamagata University School of Medicine, Yamagata, Japan. toginohand100@ceres.ocn.ne.jp
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Ogino
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Satake
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Takahara
authors.forename: Noriaki
authors.initials: N
authors.lastname: Kikuchi
authors.forename: Tadayosi
authors.initials: T
authors.lastname: Watanabe
authors.forename: Kousuke
authors.initials: K
authors.lastname: Iba
authors.forename: Seiichi
authors.initials: S
authors.lastname: Ishii
mesh_terms: D000293:Adolescent; D002675:Child, Preschool; D005260:Female; D005385:Fingers / Q000002:abnormalities; D006228:Hand Deformities, Congenital / Q000473:pathology*; D006801:Humans; D006984:Hypertrophy / Q000473:pathology; D008297:Male; D018482:Muscle, Skeletal / Q000002:abnormalities; D009135:Muscular Diseases / Q000150:complications / Q000151:congenital*; D013577:Syndrome; D038062:Upper Extremity Deformities, Congenital / Q000150:complications*