What Is the Sagittal Suture?
The sagittal suture is the gap between the left and right parietal bones. It is an extracranial suture and an intracranial suture, located at the junction of the left and right parietal bones of the skull.
- Chinese name
- Sagittal suture
- Foreign name
- The sagittal suture
- Location
- On the skull
- Features
- Walk sagittal, forward and backward
- The sagittal suture is the gap between the left and right parietal bones. It is an extracranial suture and an intracranial suture, located at the junction of the left and right parietal bones of the skull.
Morphological observation of sagittal suture
- For the shape of the osteosynthesis appearing in the extracranial suture, the process and force generated are considered to be related to temporal muscle activity. It is reported in the literature that the serrations began to develop significantly at the age of 3, and two layers of bone plates and barriers appeared in the parietal bone of the skull at the age of 4 years. The sawtooth shape increases significantly. The results of many experiments have shown that the effects of muscle function are mainly limited to the outer plate, and the sides are asymmetric.
- The configuration of the sagittal suture seen in this paper is also asymmetric on both sides. For the description of the inner surface of the skull, there is a longitudinal groove from the frontal condyle to the occipital bulge, that is, the sagittal groove. There are parietal foramen on both sides of the groove. On this side, the brain yoke, cerebral pressure traces, arterial grooves, and small granules are visible. The configuration of the seam is not mentioned. The zigzag sutures and complex sutures found in the intracranial suture are not found in this article. It can also be said that the inner surface has no muscle and makes the suture configuration simple.
- For bone healing, Grade 4 healing was performed in 28 segments in the extracranial suture and 94 in the intracranial suture. Cranial suture healing starts from the inner plate and then continues to the outer plate until the outer plate cranial suture is completely healed. However, after the internal suture of the inner plate is healed, the healing process of the suture does not continue to the outer plate, or although it continues to the outer plate, but the speed is very slow, and the extracranial suture does not heal or incompletely heal. Delayed or incomplete healing of the extracranial suture is a common phenomenon, so when estimating the age, the intracranial suture should be mainly used. Therefore, it is useful to observe the shape of each segment of the intracranial suture in this article. In the future, some statistics should be made in this aspect. The 50 cases of complete healing of the intracranial suture in this article are more in line with the development process.
- This article considers that when describing sagittal sutures in the future, they should be recorded separately with extracranial sutures and intracranial sutures. The zigzag suture and sagittal suture should be recorded as a separate noun. The zigzag is the shape and the sagittal is the azimuth. Can you consider the sagittal suture as the zigzag sagittal suture?
Sagittal suture
- Vernier calipers were used to measure the sagittal suture length of the parietal bone. The measurement points were the anterior condyle point and the herringbone point. The sagittal suture arc length ranged from 101mm to 170mm ( = 127.30 ± 13.20) mm. The shape and healing degree of the sagittal suture in the skull . According to the morphological observation of the intracranial sagittal suture according to the measurement method, the results showed that the shape of the intracranial sagittal suture was 8.33% in zigzag, 60% in straight, 10% in micro waveform, 1.67% in deep waveform, and 1.67% in complex shape. 20%; intracranial sagittal suture healing degree: 60% complete healing, 29.17% healing more than half, 5% healing half, 3.33% less than half healing, 2.5% no healing at all. Morphological observation of the extracranial sagittal suture of the skull according to the measurement method. As a result, the shape of the extracranial sagittal suture: a straight line accounts for 11.67%, a micro waveform accounts for 21.67%, and a deep waveform accounts for 25.83. %, Zigzag shape accounts for 27.5%, complex shape accounts for 13.33%; degree of extracranial sagittal suture healing: 26.67% complete healing, 33.33% healing over half, 20.83% healing half, 17.5% less than half healing, no Healing accounted for 1.67%.