Johnston C E, Hobatho M C, Baker K J, Baunin C
Texas Scottish Rite Hospital, Dallas 75219, USA.
J Pediatr Orthop B. 1995;4(1):39-48. doi: 10.1097/01202412-199504010-00006.
The bony pathoanatomy of clubfoot has been assessed by a three dimensional reconstruction of transverse CT images obtained from 27 feet in children aged 3-10 years. Principal axes of the bones were determined to quantitate interosseous deformity, while visual inspection of the reconstructed images demonstrated intraosseous deformity. "Medial spin" and midfoot adduction were analyzed on the AP view of the foot ("top" view), while hindfoot pronosupination was analyzed on the AP view of the ankle (posterior view). This technique allows visualization of deformities which normally cannot be analyzed on plain radiographs, and also shows that a variety of interosseous relationships make up the clinical entity known as clubfoot. Abnormal talar pronation ("intorsion") was an unexpected finding of this three dimensional analysis.
通过对3至10岁儿童27只脚的横断CT图像进行三维重建，评估了马蹄内翻足的骨病理解剖结构。确定骨骼的主轴以量化骨间畸形，而对重建图像的目视检查显示了骨内畸形。在足部的前后位视图（“顶部”视图）上分析“内侧旋转”和中足内收，而在踝关节的前后位视图（后视图）上分析后足旋前旋后。这项技术可以显示出在普通X线片上通常无法分析的畸形，并且还表明多种骨间关系构成了被称为马蹄内翻足的临床实体。距骨异常旋前（“内旋”）是这项三维分析的一个意外发现。
