Search results for "bone"

Dental implants with versus without peri-implant bone defects treated with guided bone regeneration

2015

BACKGROUND: The guided bone regeneration (GBR) technique is highly successful for the treatment of peri-implant bone defects. The aim was to determine whether or not implants associated with GBR due to peri-implant defects show the same survival and success rates as implants placed in native bone without defects. MATERIAL AND METHODS: Patients with a minimum of two submerged dental implants: one suffering a dehiscence or fenestration defect during placement and undergoing simultaneous guided bone regeneration (test group), versus the other entirely surrounded by bone (control group) were treated and monitored annually for three years. Complications with the healing procedure, implant surviv…

Direct and oblique approaches to the craniovertebral junction: Nuances of microsurgical and endoscope-assisted techniques along with a review of the …

2017

Purpose: The aim of this review is to provide an update of the technical nuances of microsurgical and endoscopic-assisted approaches to the craniovertebral junction (transnasal, transoral, and transcervical), and to report on the available clinical results in order to identify the best strategy. Methods: A nonsystematic update of the reviews and reporting on the anatomical and clinical results of endoscopic-assisted and microsurgical approaches to the craniovertebral junction (CVJ) was performed. Results: Pure endonasal and cervical endoscopic approaches still have some disadvantages, including their steep learning curves and their deeper surgical fields. Endoscopically assisted transoral s…

2014

Currently, antegrade intramedullary nailing and minimally invasive plate osteosynthesis (MIPO) represent the main surgical alternatives in distal tibial fractures. However, neither choice is optimal for all bony and soft tissue injuries. The Retrograde Tibial Nail (RTN) is a small-caliber prototype implant, which is introduced through a 2-cm-long incision at the tip of the medial malleolus with stab incisions sufficient for interlocking. During this project, we investigated the feasibility of retrograde tibial nailing in a cadaver model and conducted biomechanical testing. Anatomical implantations of the RTN were carried out in AO/OTA 43 A1-3 fracture types in three cadaveric lower limbs. B…

Pioneer: A Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study of Avapritinib in Patients with Indolent or Smoldering Systemic Mastocytosis w…

2019

Background: The gain-of function mutation KIT D816V plays a central role in the pathogenesis of systemic mastocytosis (SM). Among subtypes of SM, indolent SM (ISM) is the most frequent and is associated with normal/near-normal life expectancy; smoldering SM (SSM) is a subtype with a relatively higher burden of mast cells and may be associated with an increased risk of progression to advanced mastocytosis. However, both ISM and SSM patients may experience severe symptoms associated with mast cell mediator release, such as pruritus, diarrhea, anaphylaxis, and bone pain, which can be severely debilitating and have a profoundly negative impact on quality of life. Symptomatic treatments (eg, ant…

Der interessante Fall Nr. 42

2001

Epistaxis is a symptom and one of the most frequent medical emergencies. In most cases haemorrhages concern the anterior parts of the septum, in particular the Locus Kiesselbachi. Thus they are harmless and therapy is easy to handle, We report a case of a 55-year-old lady with relapsing epistaxis due to a pseudoaneurysm after surgery of a meningioma of the sphenoid bone. This type of epistaxis is rare and may culminate into a life-threatening event. The case demonstrates the importance of an exact differential diagnostic evaluation by use of modern imaging techniques for severe and life-threatening symptomatic nose-bleeding.

Allogeneic Stem Cell Transplantation for Acquired Aplastic Anemia: Better Outcome with Bone Marrow as Compared to Peripheral Blood in HLA-Matched Sib…

2009

Abstract Abstract 876 Background: Transplantation of bone marrow (BM) from a HLA-matched sibling donor is an effective treatment for severe aplastic anemia (AA) with long-term survival in excess of 80%. In the recent years there were two trends in allogeneic stem cell transplantation (SCT) for AA: (1) increasing proportion of transplants performed from matched unrelated donors (MUD) and (2) increasing proportion of transplants using peripheral blood progenitor cells (PBSC) as stem cell source instead of BM. A similar switch to PBSC over BM grafts is reported in leukemia transplants. PBSC grafts for leukemia are associated with higher rates of chronic graft-versus-host disease (cGVHD). This …

New Trends in the Treatment of Osteoporosis

1998

Osteoporosis is “a systemic disease characterized by a reduction in bone mass and a microarchitectonic alteration of the skeleton, with a consequent increase in skeleton fragility and susceptibility to fractures”, as defined by the last Consensus Development Conference1. With this definition, the alteration in skeletal structure, which is not yet easy to evaluate, becomes an important factor determining the risk of fracture of the osteoporotic patient, in addition to the bone mass, which to certain limit can be easily evaluated. This is an aspect that may create some problems at the time of taking a decision on how to proceed with a subject with decreased bone mass. Currently, the measureme…

Asymptomatic Bone Cement Pulmonary Embolism after Vertebroplasty: Case Report and Literature Review

2013

Introduction. Acrylic cement pulmonary embolism is a potentially serious complication following vertebroplasty. Case Report. A 70-year-old male patient was treated with percutaneous vertebroplasty for osteoporotic nontraumatic vertebral collapse of L5-S1. Asymptomatic pulmonary cement embolism was detected on routine postoperative chest radiogram and the patient was treated with enoxaparin, amoxicillin, and dexamethasone. At the followup CT scan no further migration of any cement material was reported; and the course was uneventful. Discussion. The frequency of local leakage of bone cement is relatively high (about 80–90%), moreover, the rate of cement leakage into the perivertebral veins (…

Bone Turnover Markers and Potential Correlation with Outcomes in Patients with Genitourinary Cancer (Renal and Bladder) and Bone Metastasis (Results …

2012

ABSTRACT Background Levels of bone turnover markers (BTM) might be correlated with outcome in terms of skeletal related events (SRE), disease progression and death. The aim of the study was to determine the possible correlation between BTM, disease progression, SREs and death in patients with genitourinary cancer and bone metastases (BM) treated with zoledronic acid (ZA). Methods Observational, prospective, multicenter study. Patients with genitourinary cancer (prostate, renal, bladder) and BM were included. BTM determined were: carboxiterminal telopeptide of type I collagen (β-CTX) and bone specific alkaline phosphatase (BALP) by ELISA (immunoenzymatic assay, IDS UK), and aminoterminal pro…

Muscle versus Fasciocutaneous Flap in Lower Limb Reconstruction: Is There a Best Option?

2017

AbstractSoft tissue defects of the lower extremity that expose underlying bones, joints, and tendons pose challenging problems and generally require free tissue transfer for a successful reconstruction. Historically, muscle flaps were the gold standard choice for lower limb reconstruction. To obviate the unpredictable appearance and high donor-site morbidity of muscle flaps, fasciocutaneous flaps were introduced. Recently, perforator flaps, such as the anterolateral thigh flap, gained a leading role in the reconstructive scenario. There is growing evidence in the literature supporting that fasciocutaneous and perforator flaps are comparable to muscle flaps in terms of flap survival, postope…