The incidence of failure in spinal fusion is still too high (Barr 1951). It has been stated that if the operation could be undertaken with little or no danger from shock, subsequent thrombosis and embolism, and if it would offer a high prospect of firm union with a short period of bed rest, then a larger proportion of patients would be grafted (Young 1953). Spinal fusion was the subject of an e...

One of the conditions for ensuring success in implant surgery with an immediate loading (IL) protocol is to achieve maximum primary stability (PS) through the use of dental implants with the appropriate design and surface and a properly prepared osseous bed. The aim of this study was to assess the stability, degree of osseointegration, and success rate after inserting an implant with IL in an o...

We analyzed the effects of gravitational unloading on muscular fatigability and the effectiveness of resistive vibration exercise to counteract these changes. Changes in knee extensor fatigability as a consequence of 8 weeks of horizontal bedrest with or without daily resistive vibration exercise were evaluated in 17 healthy male volunteers. Bedrest increased fatigability (% decrease in maximal...

Bone strength, which is resistance to fracture, depends not only on the bone mass, but also on its spatial distribution (microand macroarchitecture) and the intrinsic properties of the materials that constitute the bone [1]. A particular feature of the bone is the ability to adapt its size and shape in response to mechanical loads, through the process of modeling achieved by the independent act...

A 29yearold woman presented to our clinic for subungueal hyperkeratotic lesion of the fourth left toenail. In 1997, she developed systemic sarcoidosis with lung and cutaneous lesions. The patient required gradually tapered systemic corticosteroids for 4 years and methotrexate for 1 year to control lung disease. A few months previously a hyperkeratotic verrucous lesion developed beneath the dist...

A copious literature, including many accounts of experimental studies on bone grafting and on the different behaviour of autogenous, homogenous and heterogenous implants is already available. Among these contributions only a few are dedicated to describing the vascular pattern of the bed and graft and most of these give only scanty or unsupported evidence of the vascular behaviour in bone graft...

Vascularized bone graft (VBG) is a form of vascularized bone marrow transplant in which the bone marrow is surgically grafted with its microenvironment intact. Due to the preservation of cellular viability, VBG have significant advantages over non-vascularized bone grafts. Free vascularized fibula grafts have superior material properties and tolerate infection. Bone healing can be accomplished ...

New therapeutic strategies are required for critical size bone defects, because the gold standard of transplanting autologous bone from an unharmed area of the body often leads to several severe side effects and disadvantages for the patient. For years, tissue engineering approaches have been seeking a stable, axially vascularized transplantable bone replacement suitable for transplantation int...

In this work, the backward Bayesian multiple linear regression (BBMLR) as a new approach is presented to predict the adsorption efficiency (AE) of Cd(II) ions by ostrich bone char (OBC) in the fixed bed adsorption with four operational variables consisting of pH (2-9), inlet Cd(II) concentration (Co= 25-100 mg/L), bed depth (h= 3-9 cm) and feed flow rate (Q= 0.5-30 mL/min). The performance of t...