A new anatomic trait for identifying the mendosal suture in young children: the mendosal-lambdoidal angle

作者：Gurses Ilke Ali^*; Esenkaya Asim; Gayretli Ozcan; Kale Aysin; Ozturk Adnan; Tekes Aylin

来源：Surgical and Radiologic Anatomy, 2016, 38(3): 321-325.

DOI：10.1007/s00276-015-1556-y

• Mendosal suture
• Occipital bone
• Fracture
• 3D head CT

Radiologic diagnosis of skull fractures in young children is difficult due to numerous accessory sutures. This is especially true around the occipital bone because it has more than one ossification center. Normal anatomic variants, such as the mendosal suture, may be misinterpreted as a skull fracture. We investigated the anatomic traits of the mendosal suture in young children.
We retrospectively evaluated 52 children, aged between 1 month and 4 years, who had undergone head computed tomography with three-dimensional reconstructions. We evaluated the presence or absence of the mendosal suture. If present, then we measured the length of the suture and the angle between the lambdoidal and mendosal suture lines.
The presence of the mendosal suture was bilateral in 12 children and unilateral in 5 children. The mendosal suture had a mean length of 13.9 +/- A 3.4 mm on the right side and 11.2 +/- A 4 mm on the left side. The angle between the mendosal and lambdoidal sutures had a mean value of 54.2A degrees A A +/- A 11A degrees for the right side and 53.6A degrees A A +/- A 13.9A degrees for the left side. The 95 % confidence interval for the mean value of the angle had a lower and upper bounds of 48A degrees and 60A degrees on the right side and 46A degrees and 61A degrees on the left side, respectively.
The angle between mendosal and lambdoidal suture lines may help radiologists to identify the mendosal suture.

• 出版日期2016-4