Ogut Eren, Yildirim Fatos Belgin, Guzelad Ozge
Faculty of Medicine, Department of Anatomy, Istanbul Medeniyet University, Istanbul, Türkiye.
Faculty of Medicine, Department of Anatomy, Akdeniz University, Antalya, Türkiye.
Surg Radiol Anat. 2024 Aug;46(8):1285-1294. doi: 10.1007/s00276-024-03424-8. Epub 2024 Jun 25.
This study aimed to determine the presence and incidence of accessory sutures and bipartite zygomatic bone types, and their effects on population affinity and clinical significance.
We examined 120 dry skulls and 50 zygomatic bones to evaluate the presence, frequency, and location of accessory zygomatic sutures as well as subtypes of bipartite zygomatic bones. Morphometric analysis included measuring the total width and length of the zygomatic bone with accessory sutures (ASs), the total length of the AS, and the shortest distance between the AS and various anatomical landmarks.
Bipartite zygomatic bone was observed in 14 of 120 dry skulls (11.6%) and 1 of 50 zygomatic bones (2%), indicating an overall incidence of 16 occurrences (8.82%). The ASs were predominantly located posterolaterally in 11 cases (six males, five females), anteromedially in two cases (one male, one female), superiorly in one case (male), and superolaterally in one case (male). Significant differences were noted in the distribution of the ASs (p < 0.001). Notably, a vertical inferior bipartite zygomatic type, which has not been reported in the literature, was identified. Correlations were observed between the various anatomical landmarks. Among females, the length of AS was significantly different (p = 0.038). Significant differences were also noted in the shortest distance between the AS and the zygomaticofacial foramen (ZFF) based on the body side (p = 0.034).
Our study suggests that the bipartite zygomatic bone is not a common occurrence, indicating its significance as a morphological variation present in certain individuals. The type VII bipartite zygomatic bone exhibited the highest incidence rate, suggesting potential ethnic-specific differences in the prevalence of certain subtypes. The consistent pattern of suture distribution, along with the asymmetry and variability in suture patterns, emphasizes its potential clinical relevance.
本研究旨在确定副缝和二分颧骨类型的存在情况及发生率，以及它们对人群亲缘关系和临床意义的影响。
我们检查了120个干燥颅骨和50块颧骨，以评估副颧骨缝的存在情况、频率和位置以及二分颧骨的亚型。形态学分析包括测量有副缝（ASs）的颧骨的总宽度和长度、AS的总长度以及AS与各种解剖标志之间的最短距离。
在120个干燥颅骨中有14个（11.6%）和50块颧骨中有1个（2%）观察到二分颧骨，总体发生率为16例（8.82%）。ASs主要位于后外侧的有11例（6例男性，5例女性），前内侧的有2例（1例男性，1例女性），上方的有1例（男性），上外侧的有1例（男性）。ASs的分布存在显著差异（p < 0.001）。值得注意的是，发现了一种文献中未报道的垂直下二分颧骨类型。观察到各种解剖标志之间存在相关性。在女性中，AS的长度有显著差异（p = 0.038）。基于身体侧别，AS与颧面孔（ZFF）之间的最短距离也存在显著差异（p = 0.034）。
我们的研究表明，二分颧骨并不常见，表明其作为某些个体中存在的形态变异具有重要意义。VII型二分颧骨的发生率最高，表明某些亚型的患病率可能存在种族特异性差异。缝线分布的一致模式，以及缝线模式的不对称性和变异性，强调了其潜在的临床相关性。
