INTERTROCHANTERIC FRACTURES Approximately 50% of intertrochanteric fractures are stable and have minimal or no posteromedial comminution. The remaining 50% are unstable and have posteromedial instability and little resistance to varus deformity.1,4,5 Older rigid devices led to cutout or penetration of the nail as the fracture impacted. In the late 1960s, sliding devices were developed to allow ...

Magnesium alloys are candidates for resorbable material in bone fixation. However, the degradation and performance of osteosynthesis plate/screw systems in vivo, under cyclic deformation, is unknown. We evaluated the outcomes of human standard-sized magnesium plate/screw systems with or without plasma-electrolytic surface modifications in a miniature pig rib model. Of a total of 14 minipigs, si...

PURPOSE To assess an alternative technique for the treatment of midshaft non-unions of the clavicle. METHODS Five patients with symptomatic non-unions of the clavicle were treated with open reduction and intramedullary fixation by using a Herbert cannulated bone screw. Autogenous bone grafting was applied in one case and decortication in the other 4 cases. RESULTS Review of the clinical and...

Erratum After publication of the original article [1] it came to our attention that the legends for figures 2 and 3 had been interchanged. The correct legend for figure two is 'Pedicle screw fusion model' and the correct legend for figure three is 'Cortical bone trajectory model'. biomechanical comparison between cortical bone trajectory fixation and pedicle screw fixation. permits unrestricted...

doi:10.3415/VCOT-12-12-0154 Our first issue of VCOT for this year contains several papers pertaining to the study of fracture morphology, and the stabilization of fractures with bone plates (1-3). In addition, Herten and colleagues describe the characterization of mesenchymal stem cells isolated from bone marrow by a point-of-care device; these cells had osteogenic potential that could be expec...

OBJECTIVES Osteosynthesis of anterior pubic ramus fractures using one large-diameter screw can be challenging in terms of both surgical procedure and fixation stability. Small-fragment screws have the advantage of following the pelvic cortex and being more flexible.The aim of the present study was to biomechanically compare retrograde intramedullary fixation of the superior pubic ramus using ei...

Serdar Yenigun, DDS, PhD/Pinar Ercal, PhD/Elif Ozden-Yenigun, PhD/Ahmet Bulent Katiboglu, PhD: Purpose: The aim of this study was to determine the effect solid (one-piece) and two-piece abutments on stress profile narrow implants with marginal bone loss. Materials Methods: Solid were connected a conical internal octagon–connection implant (3.3 mm in diameter, 10 length) restored single crown. ...

doi:10.3415/VCOT-12-12-0154 Our first issue of VCOT for this year contains several papers pertaining to the study of fracture morphology, and the stabilization of fractures with bone plates (1-3). In addition, Herten and colleagues describe the characterization of mesenchymal stem cells isolated from bone marrow by a point-of-care device; these cells had osteogenic potential that could be expec...

The aims of this study were to analyse the stress distribution developing around an orthodontic miniscrew (OM) inserted into the maxilla and to determine the stress field changes for different screw lengths and for different levels of osseointegration occurring at the bone/screw interface. An integrated experimental/numerical approach was adopted. Using the photoelastic technique, the stress fi...

BACKGROUND Degenerative lumbosacral stenosis is a common problem in large breed dogs. For severe degenerative lumbosacral stenosis, conservative treatment is often not effective and surgical intervention remains as the last treatment option. The objective of this retrospective study was to assess the middle to long term outcome of treatment of severe degenerative lumbosacral stenosis with pedic...