Sagittal Synostosis: Quantitative Assessment of Presenting Deformity and Surgical Results Based on CT Scans

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Abstract

We reviewed our experience with nine consecutive patients with untreated isolated nonsyndromic sagittal synostosis. Using a method of 14 clinically relevant measurements taken from preoperative and postoperative CT scan images of these patients, we documented their presenting skeletal dysmorphology and the results of surgical correction at least 1 year after operation. Significant preoperative findings included an elongated cranial vault length that averaged 103 percent of normal and a narrowed cranial vault width both anteriorly at 92 percent and posteriorly at 86 percent of normal. Results of surgical correction, as documented by CT scan measurements, included normalization of the cranial length to 100 percent and of the anterior width to 101 percent of normal and improvement (but undercorrection) of the posterior width to 94 percent of normal. Quantitative measurement of CT scan images confirmed clinically observed findings in these patients before suture release and reconstruction and proved useful in assessing the surgical results achieved.

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