Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: T
Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed
Macalister reported the variations of the tibialis posterior as follows:
Another muscle, tibialis secundus, arises from the posterior aspect of the tibia below tibialis posterior and inserts into the capsule of the ankel joint. A similar slip (tensor capsuli tibiotarsalis anterior) , ending on the anterior wall of the capsule of the ankel joint, is considered by some investigators to be a variant of the long accessory muscle described.
Tibiotarsalis arises from the popliteal line and back of the tibia and inserts into the plantar fascia. This muscle is considered to be a tensor fasciae plantaris.
The tendon of tibialis posterior may send a slip to the tendon of flexor hallucis brevis, which may give rise to hallux valgus.
Syn.: m. tibiaeus posticus, tibialis posterior, tibiaeus nauticus, Schwimmuskel (Theile).
Expansion of Tibialis Posterior tendon to Oblique Part of
Adductor Hallucis Muscle.
a, oblique part of adductor hallucis; f, flexor hallucis brevis; t, tibialis posterior tendon. Arrow, deviant tendinous expansion; arrow head, deviated great toe.
from Gunal, Sahinoglu, and Bergman.
Anderson, R.J. (1897) Vorkommen eines Musculus tibio-tarsalis sive tensor fasciae plantaris. Arch. Path. Anat. Physiol. Klin. Med. 81:574-575.
Anson, B.J., Ed. (1966) Morris' Human Anatomy,12th ed. The Blakiston Division, McGraw-Hill Book Company, New York.
Gunal, I., Sahinoglu, K. and R.A. Bergman. (1994) Anomalous tibialis posterior muscle as an etiologic factor of hallux valgus. Clinical Anat. 7(1):21-25.
Macalister, A. (1875) Observations on the muscular variations in the human anatomy. Third series with a catalogue of the principal muscular variations hitherto published. Trans. Roy. Irish Acad. Sci. 25:1-130.
Musial, W.W. (1963) Variations of the terminal insertions of the anterior and posterior tibial muscles in man. Folia Morphol. (Warsaw) 22:294-302.
Toldt, C. (1928) An atlas of Human Anatomy for Students and Physicians. The Macmillian Company, New York.
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