In this article we provide evidence that evolutionary pressures altered the cranial base and mastoid region of temporal bone more than calvaria in transition from H. erectus to sapiens. This process seems have resulted evolution globular skull shape – but not as a result expansion brain parietal regions reduction relative parietals. Consequently, argue parietals be unrelated evolution, is by-pr...

The healing process of resected, autoclaved (121 degrees C, 20 minutes) and re-implanted bone in the rat parietal bone was compared with that of autoclaved bone that was supplemented with allogenic bone matrix (AAA-bone), using a scanning electron microscope and a light microscope. In the implant without AAA-bone, bone union and replacement of the autoclaved bone was seen at 2 weeks after impla...

Using morphological, histological, and TEM analyses of the cranium, we provide a detailed description of bone and suture growth in zebrafish. Based on expression patterns and localization, we identified osteoblasts at different degrees of maturation. Our data confirm that, unlike in humans, zebrafish cranial sutures maintain lifelong patency to sustain skull growth. The cranial vault develops i...

Chondromyxoid fibroma (CMF) is an exceedingly rare tumor that represents less than 1% of all primary bone neoplasms. Occurrence in the facial and cranial bones is extremely rare and frequently misdiagnosed. Case Reports We report two cases of CMF, one in the sphenoclival skull base and the other involving the parietal bone in two young female patients. Excision was performed in both cases. Pres...

from this short review, immerges a syndrome of the chronic subdural hematoma. the patient is usually an elderly male', with a hisory of moderate or severe trauma to the head incurred about 2 months prionjto admission, with or witout immediate headache which subsides, then recurs lllb6ut two to three weeks prior to admission. the headache becomes severer and the patient may develop a hemiparesis...

background: bone marrow-derived mesenchymal cellscan transdifferentiate into cardiomyocyte cells and improveheart function after transplantation. since biomaterials canimprove the cell retention in the site, cell survival and differentiation,heart tissue engineering is now being explored as anapplied solution to support cell-based therapies and increasetheir efficacy for myocardial diseases. ch...

The ability to break open large bones has evolved independently in only three groups of carnivorous mammals, all of which have robust teeth, vaulted foreheads, and pronounced sagittal crests. One unusual skull feature, present in bone-cracking members of the family Hyaenidae, is a caudally elongated frontal sinus, hypothesized to function in resistance to bending and stress dissipation during b...

We report here two cases of primary intraosseous meningioma with aggressive behavior. A 68-year-old man presented with a one year history of a soft, enlarging mass in the right parietal region. Magnetic resonance image (MRI) revealed a 6 cm sized, heterogeneously-enhancing, bony expansile mass in the right parietal bone, and computed tomograph (CT) showed a bony, destructive lesion. The tumor, ...

The amount of new bone produced by grafting genistin in collagen matrix was compared to the bone produced by collagen matrix alone. A total of 18 bone defects (5 mm by 10 mm) were created in the parietal bone of 9 New Zealand White rabbits. Six defects were grafted with genistin mixed with collagen matrix, while 6 were grafted with collagen matrix alone (positive control) and 6 were left empty ...

PURPOSE To evaluate bone regeneration in critical defects in the rats' calvarium. METHODS Eighteen rats Wistar were divided into three groups of six animals each according to the time of evaluation (15, 30 and 60 days). One calvarium defect of 5 mm was made in the parietal bone of each animal under general anesthesia. After the time of evaluation, the animals were killed, when the bone was hi...