| base of skull | The sloping floor of the cranial cavity. It comprises both the external base of skull (external view) and the internal base of skull (internal view). See: internal base of skull. Synonym: basis cranii, cranial base. (05 Mar 2000) |
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| skull base | The internal and external base of the cranium: respectively the inner and outer surfaces of the inferior region of the skull. The internal base constitutes the floor of the cranial cavity. (12 Dec 1998) |
| skull base neoplasms | Neoplasms of the base of the skull specifically, differentiated from neoplasms of unspecified sites or bones of the skull (skull neoplasms). (12 Dec 1998) |
| internal base of skull | <anatomy> The interior aspect of the skull base on which the brain rests; the floor of the cranial cavity. See: base of skull. Synonym: basis cranii interna. (05 Mar 2000) |
| external base of skull | External aspect of the base of skull Synonym: norma basilaris, basis cranii externa, norma inferior, norma ventralis. (05 Mar 2000) |
| basal skull fracture | <orthopaedics> A fracture involving the base of the cranium. This fracture is often difficult to detect clinically. Findings may include raccoon eyes, Battle's sign, haemotympanum and cerebrospinal fluid rhinorrhoea. Plain skull X-ray will often not reveal the basal skull fracture, making a CT scan or MRI the most reliable diagnostic investigation. (15 Nov 1997) |
| closed skull fracture | Fracture with intact overlying scalp and/or mucous membranes. Synonym: simple skull fracture. (05 Mar 2000) |
| comminuted skull fracture | A fracture of the skull with fragmentation of bone. (05 Mar 2000) |
| compound skull fracture | A fracture with laceration of overlying scalp and/or mucous membrane. Synonym: compound skull fracture. (05 Mar 2000) |
| simple skull fracture | Fracture with intact overlying scalp and/or mucous membranes. Synonym: simple skull fracture. (05 Mar 2000) |
| skull fracture | <orthopaedics> A injury to the cranium with sufficient force to fracture one of the bones with comprise the skull. The temporal bone is the most often fractured. See: head injury. (27 Sep 1997) |
| stellate skull fracture | A skull fracture with multiple linear fractures radiating from the site of impact. (05 Mar 2000) |
| depressed skull fracture | A skull fracture with inward displacement of a part of the calvarium. (27 Sep 1997) |
| diastatic skull fracture | The traumatic separation of cranial bones at a suture line. (27 Sep 1997) |
| open skull fracture | A fracture with laceration of overlying scalp and/or mucous membrane. Synonym: compound skull fracture. (05 Mar 2000) |