basisphenoid


Also found in: Dictionary.

basisphenoid

 [ba″sĭ-sfe´noid]
an embryonic bone that becomes the back part of the body of the sphenoid.

ba·si·sphe·noid

(bā'si-sfē'noyd),
Relating to the base or body of the sphenoid bone; denoting the independent center of ossification in the embryo that forms the posterior portion of the body of the sphenoid bone.
Synonym(s): basisphenoid bone

basisphenoid

/ba·si·sphe·noid/ (ba″sĭ-sfe´noid)
2. an embryonic bone that becomes the back part of the body of the sphenoid.

basisphenoid

adjective Referring to the basisphenoid bone.
 
noun Basisphenoid bone, see there.

ba·si·sphe·noid

(bā'si-sfē'noyd)
Relating to the base or body of the sphenoid bone.

basisphenoid

one of the bones of the floor of the skull which, with the presphenoid, constitutes the sphenoid bone.

basisphenoid fracture
occurs in horses that rear over backwards. Characterized by unilateral facial paralysis, circling gait. Called also occipital fracture.
References in periodicals archive ?
To compare this approach with the condition of the basisphenoid suture (Hoffmeister, 1969), specimens were rearranged in four age groups according to the degree of closure.
To compare our characters for discriminating age groups with the basisphenoid suture, all procedures except Wilks' lambda were performed on the reclassified specimens.
3) Some authors argue that recurrence is unrelated to tumor stage or surgical approach, (17-19) but recurrence rates are reduced through meticulous surgical removal and may be related to residual disease in the basisphenoid bone.
3 yr nasopharyngeal carcinoma 2 79 Clival Infratemporal 1 yr chordoma fossa approach 3 47 Sphenoclival None 3 yr chondrosarcoma 4 28 Clival chordoma None 10 mo 5 68 Oncocytoma of the None 15 mo postnasal space 6 49 Recurrent Trans-sphenoidal 9 mo basisphenoid excision chordoma 7 50 Clival chordoma None 2.
One month before our evaluation, a CT was performed at another hospital and showed an osteolytic lesion with infiltrative margins and heterogeneous contrast enhancement, primarily involving the central base of the skull and covering both the basisphenoid and basiocciput.
Ventral process of basisphenoid rudimentary, not reaching to paraspheniod; basisphenoid with a small pore between it and basis crania.
Three age classes were assigned on the basis of ventral braincase suture closures between the basioccipital and basisphenoid, and between the basisphenoid and presphenoid (Figure 2).
We also scored discrete mandibular and cranial characters identified by Ruedas (1998) to distinguish robustus and chapmani, including the basisphenoid foramina, tympanic process, and mental foramen.
16) Nicolai et al reviewed the cases of 15 patients who underwent endoscopic surgery for juvenile angiofibroma, including 4 who had modified Fisch stage III disease; they emphasized the importance of drilling out the pterygoid canal to explore the basisphenoid bone.