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Abstract
Three-dimensional reconstruction is an important tool for the evaluation of the complicated body structures. It makes possible to rotate and separate the components of the structure and to observe the hidden surface of the body, otherwise we can not approach without disturbing its surrounding structures. We performed three-dimensional reconstruction of the tarsal bones in congenital club foot of 32 week fetus. Three-dimensional reconstruction of the tarsal lesion in congenital club foot revealed following important deformities. 1. The talar neck and head was faced to medial and plantar side.
2. The calcaneus was horizontally rotated and its anterior part was located under the talus. It was in severe equinus and moderate varus position. 3. The navicular was rotated to medial side and was subluxated from the talar head. 4. The calcaneus-navicular-talar head complex was horizontally rotated to medial and plantar side. 5. The center of rotation seems to be located in the anterior and inferior portion of the talar body, probably a talocalcaneal interosseous ligament. In conclusion, these findings give us a fundamental clue to solve patho-mechanism of the congenital club foot. To induce this deformity, strong force must be applied to the tarsal bones forcing them to equinus and medial position.
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