[症例報告]茎突舌骨靭帯の全長の骨化による過長茎状突起の1例について

概要

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A 54-year-old male was found having a pair of unusually elongated styloid processes of the temporal bone. The right styloid process measured 7.5 cm in length, while that of the left side, which was broken into two pieces, measured 8 (2.5+5.5)cm in length. An important finding in this case was that a portion which might correspond to the stylohyoid ligament have ossified along its total length to unify the 'intrinsic' styloid process and the cornu minus as a single entity. The elongated styloid processes of the both sides were found making a direct contact with the body of the hyoid bone and forming there a syndesmosis. The thyreohyoid membrane was characteristically narrowed and, accodingly, the thyreohyoid ligament was shortened. The cornu majus of the right side was observed to be attached to the cornu superius of the thyroid cartilage. It could be speculated that the elongated styloid process of this case comprises stylohyal, epihyal and ceratohyal cartilaginous elements.
琉球大学医学部の論文
1984-00-00