It is available in a variety of shapes and sizes. Low profile for minimal palpability, Offered with smooth or textured bottom disks, Specially designed smooth disk edges.

The bones of the skull are in three layers: the hard compact layer of the external table (lamina externa), the diploë (a spongy layer of red bone marrow in the middle, and the compact layer of the inner table (Lamina interna).

Skull thickness vary from one location to another, so the impact site decide the traumatic impact which cause a fracture. The skull is thick at the external angular process of the frontal bone, the external occipital protuberance, the glabella, and the mastoid processes, Areas of the skull that are covered with muscle have no underlying diploe formation between the internal and external lamina, which results in thin bone more susceptible to fractures.

Skull fractures occur more easily at the thin squamous temporal and parietal bones, the sphenoid sinus, the foramen magnum (the opening at the base of the skull that the spinal cord passes through), the petrous temporal ridge, and the inner portions of the sphenoid wings at the base of the skull. The middle cranial fossa, a depression at the base of the cranial cavity forms the thinnest part of the skull and is thus the weakest part. This area of the cranial floor is weakened further by the presence of multiple foramina; as a result this section is at higher risk for basilar skull fractures to occur. Other areas more susceptible to fractures are the cribriform plate, the roof of orbits in the anterior cranial fossa, and the areas between the mastoid and dural sinuses in the posterior cranial fossa.

Cranial repair is a common operation in brain surgery to solve the problems of abnormal cerebral blood supply, insufficient or disorder of cerebrospinal fluid circulation and brain compression caused by skull defect.Craniocerebral trauma and brain surgery removal of bone flap, skull benign tumor or tumor resection, skull chronic osteomyelitis, etc.Because the skull defect area shape changes, the scalp is affected by atmospheric pressure, so that it invagination oppresses the brain tissue.Repair the defect area, make up for the mechanical safety protection problem of the brain tissue, solve the abnormal problems such as insufficient or disorder of cerebral blood supply and cerebrospinal fluid circulation, and also need to consider the repair and shaping problem of the original shape.Alleviate skull defect syndrome.Cranial repair should be performed for skull defects with a diameter of more than 3 cm, no muscle coverage, and no contraindications.It is generally considered that 3~ 6 months repair after craniotomy is appropriate.Children can be 3~5 years old after plastic surgery.