Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: F
Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed
An interesting pattern of innervation has been reported for this muscle. The superficial head may be innervated by the median, ulnar or both nerves with a frequency ratio of 13-10-7, while the deep head is innervated primarily by the ulnar (16 of 24 cases), by the median (3 of 24 cases), or by both nerves (5 of 24 cases).
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Gegenbaur, C. (1861) Ein Fall von mehrfachen Muskelanomalien an der oberen Extremität. Arch. Path. Anat. Physiol. Klin. Med. 21:376-385.
Hall, H.S. (1903) Complete absence of the superficial flexors of the thumb and concurrent muscular anomalies. J. Anat. Physiol. 38:287-289.
Macalister, A. (1875) Additional observations on muscular anomalies in human anatomy (third series), with a catalogue of the principal muscular anomalies hitherto published. Trans. Roy. Irish Acad. Sci. 25:1-134.
Malhotra, V.K., Singh, N.P. and S.P. Tewari. (1982) The accessory head of the flexor pollicis muscle and its nerve supply. Anat. Anz. 151:503-505.Section Top |Title Page
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