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Medical Definition of Os tibiale posterius
1. Os tibiale posticum, a sesamoid bone in the tendon of the tibialis posterior muscle, occasionally fused with the tuberosity of the navicular. Synonym: tibiale posticum. (05 Mar 2000)
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1. Os tibiale posticum, a sesamoid bone in the tendon of the tibialis posterior muscle, occasionally fused with the tuberosity of the navicular. Synonym: tibiale posticum. (05 Mar 2000)