title: Bilateral congenital absence of the abductor pollicis brevis muscle: a case report.
abstract: Congenital absence of the abductor pollicis brevis is a very rare condition and is usually associated with other congenital anomalies. Here we report a case of bilateral congenital absence of the abductor pollicis brevis without any other abnormalities, which has not been previously reported. A 24-year-old Caucasian male patient presented to our clinic with flattening in the palmar region, pain and discomfort in writing, and weakness in both hands. USG and MRI revealed bilateral absence of the abductor pollicis brevis muscle. Bilateral congenital absence of the abductor pollicis brevis muscle requires no treatment due to satisfactory hand function, and results in cosmetic problems. Congenital absence of the abductor pollicis brevis muscle should be kept in mind in patients with flattening of the thenar eminences.
authors.affiliation: Department of Orthopedics and Traumatology, Medical School Hospital, Atatürk University. dr.aliaydin@hotmail.com
authors.forename: Ali
authors.initials: A
authors.lastname: Aydin
authors.forename: Murat
authors.initials: M
authors.lastname: Topal
authors.forename: Kutsi
authors.initials: K
authors.lastname: Tuncer
authors.forename: Mesut
authors.initials: M
authors.lastname: Kilic
mesh_terms: D004576:Electromyography; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D018482:Muscle, Skeletal / Q000002:abnormalities* / Q000000981:diagnostic imaging; D013933:Thumb / Q000002:abnormalities* / Q000000981:diagnostic imaging; D014463:Ultrasonography; D055815:Young Adult