Pterygomaxillary fissure
（重定向自Pterygomaxillary）
![](/Images/godic/202502/05/Gray1895230.png")
The pterygomaxillary fissure is a fissure of the human skull. It is vertical, and descends at right angles from the medial end of the inferior orbital fissure; it is a triangular interval, formed by the divergence of the maxilla from the pterygoid process of the sphenoid.