Location of the Anatomic Footprint Centers of the Anterior Cruciate Ligament Determined by Quadrant Method on Three-Dimensional Magnetic Resonance Imaging.

Background: The quadrant method is widely used to determine the femoral footprint center (FFC) on radiographs or computed tomography (CT) and can also describe the tibial footprint center (TFC). However, its application on three-dimensional (3D) magnetic resonance imaging (MRI) has been limited. This study aims to describe the ACL footprint center position on 3D MRI of healthy knees using the quadrant method.

Accuracy of total knee arthroplasty using hospital-based 3D printed patient-specific instrumentation: A radiology research.

Background: Patient-specific instruments (PSIs) were reported to improve implant position and rotation accuracy in total knee arthroplasty (TKA), among other benefits. Most PSIs used in TKA were commercial products from implant manufacturers, which could be time-consuming and could potentially affect accuracy as they relied on engineer's decision. This study aimed to present the radiological outcomes of PSI produced by the 3D printing facility at our hospital, with direct involvement of the surgeon in its design.

Morphological Characteristics of the Vietnamese Adult Human Acetabulum Using Multiplanar Reconstruction Computed Tomography in Total Hip Replacement Surgery.

Background: The anatomical parameters of the acetabulum vary among races and geographical regions. Multislice Computed Tomography (CT) has proven to be a practical approach to assess morphological parameters of the acetabulum. The purpose of this study was to explore morphological characteristics of the acetabulum measured by CT scans in Vietnamese adults.

Doubling the life of Cu/ZnO methanol synthesis catalysts via use of Si as a structural promoter to inhibit sintering.

Cu/ZnO/AlO catalysts used to synthesize methanol undergo extensive deactivation during use, mainly due to sintering. Here, we report on formulations wherein deactivation has been substantially reduced by the targeted use of a small quantity of a Si-based promoter, resulting in accrued activity benefits that can exceed a factor of 1.8 versus unpromoted catalysts.

Production of extracellular agarase from Priestia megaterium AT7 and evaluation on marine algae hydrolysis.

Agar is a common component biosynthesized from various marine algae species that is widely applied in various fields including food and pharmaceutical industries. However, the structural composition of agar is highly resisted against chemical and biological hydrolysis. Therefore, tremendous research is exploring various pretreatment strategies to break down the intrinsic chemical structural of agar linkage (i.

Reflections on the concept of optimality of single decision point treatment regimes.

In many areas, applied researchers as well as practitioners have to choose between different solutions for a problem at hand; this calls for optimal decision rules to settle the choices involved. As a key example, one may think of the search for optimal treatment regimes (OTRs) in clinical research, that specify which treatment alternative should be administered to each patient under study. Motivated by the fact that the concept of optimality of decision rules in general and treatment regimes in particular has received so far relatively little attention and discussion, we will present a number of reflections on it, starting from the basics of any optimization problem.

Mechanochemical preparation of a modified NiAlO structure.

Mechanochemical synthesis routes offer a sustainable, simple method for preparing materials. In this work, NiAlO was synthesised by a mechanically activated method using a high-energy planetary mill and a calcination step. This study aims to identify the effect of different milling energies on the phases, chemical environments and surface composition of the material.

Novel technique for scapulothoracic arthroscopy: A case report of the application of intraoperative 3D imaging.

Introduction: Snapping shoulder syndrome could be effectively treated with scapulothoracic arthroscopy. The excision of the scapular superomedial corner is assumed to help lower the recurrence rate. However, the amount of resection is still controversial.

Partial replacement of pelvis with the hip joint in osteosarcoma treatment: A case report.

Introduction: and importance: Pelvic osteosarcoma is quite rare and is a challenging task for orthopedic surgeons. This aim of this study is to present the first case report using customized 3D-printed prosthesis in Vietnam.

Case Presentation: 57-year-old male was diagnosed with pelvic osteosarcoma.

Non-oncologic indication for elbow megaprothesis replacement: 2 cases report.

Introduction: Treatment of elbow bone defects is still a huge challenge in orthopaedic in order to restore the shape and function of the elbow joint. Bone defect reconstruction is very difficult due to biomechanical complexity of the elbow joint and the poor coverage tissue of this area, so mega-prothesis can be considered the most optimal solution in these cases.

Case Report: We present two clinical cases of megaprosthesis elbow replacement for treatment of bone defects caused by sequelae of trauma.

Production of Sucrolytic Enzyme by by the Bioconversion of Pomelo Albedo as a Carbon Source.

Recently, there has been increasing use of agro-byproducts in microbial fermentation to produce a variety of value-added products. In this study, among various kinds of agro-byproducts, pomelo albedo powder (PAP) was found to be the most effective carbon source for the production of sucrose hydrolyzing enzyme by TKU004. The optimal medium for sucrolytic enzyme production contained 2% PAP, 0.

Assessment of oral health in older adults by non-dental professional caregivers-development and validation of a photograph-supported oral health-related section for the interRAI suite of instruments.

Objectives: An optimized oral health-related section and a video training were developed and validated for the interRAI suite of instruments. The latter is completed by professional non-dental caregivers and used in more than 40 countries to assess care needs of older adults.

Methods: The optimized oral health-related section (ohr-interRAI) consists of nine items and a video training that were developed in consecutive phases.

Transarticular Screw Fixation in the Treatment of Severe C1-C2 Dislocation: A Case Series Report.

Background: To aim of the present paper was to evaluate the results of halo traction and transarticular screw fixation combined with bone autoplasty in patients with severe atlantoaxial dislocation.

Case Presentation: This is a retrospective study of severe cases of atlantoaxial dislocation in nine patients (six men and three women) treated with preoperative halo traction and posterior C1-C2 transarticular screw fixation combined with bone autoplasty from June 2006 to June 2011 at the Saint Paul Hospital (Hanoi). The mean age of patients was 37.

Serial correlation structures in latent linear mixed models for analysis of multivariate longitudinal ordinal responses.

We propose a latent linear mixed model to analyze multivariate longitudinal data of multiple ordinal variables, which are manifestations of fewer continuous latent variables. We focus on the latent level where the effects of observed covariates on the latent variables are of interest. We incorporate serial correlation into the variance component rather than assuming independent residuals.

Assessment of oral health conditions presented in photographs - is there a difference between dentists and non-dental professional caregivers?

Background: Photographs can help non-dental professional caregivers to identify problems when inspecting the mouth of care-dependent older individuals. This study evaluated whether the assessment of oral health-related conditions presented in photographs differed between dentists and non-dental professional caregivers.

Materials And Methods: One-hundred-and-seventy-nine photographs were taken from long-term care facility residents and from patients at the Department of Dentistry of a University Hospital.

Bioprocessing of Squid Pens Waste into Chitosanase by sp. TKU047 and Its Application in Low-Molecular Weight Chitosan Oligosaccharides Production.

Chitosan oligosaccharide (COS) has become of great interest in recent years because of its worthy biological activities. This study aims to produce COS using the enzymatic method, and investigates sp. TKU047, a chitinolytic-producing strain, in terms of its chitosanase productivity on several chitinous material-containing mediums from fishery process wastes.

Latent Ornstein-Uhlenbeck models for Bayesian analysis of multivariate longitudinal categorical responses.

We propose a Bayesian latent Ornstein-Uhlenbeck (OU) model to analyze unbalanced longitudinal data of binary and ordinal variables, which are manifestations of fewer continuous latent variables. We focus on the evolution of such latent variables when they continuously change over time. Existing approaches are limited to data collected at regular time intervals.

The Anatomical Numerical Measurement of Posterior Cruciate Ligament: A Vietnamese Cadaveric Study.

Background: The posterior cruciate ligament (PCL) is crucial to restrain the posterior translation of the tibia. Its anatomical structure is complex. A proper understanding of PCL anatomy may assist surgeon in reconstructing anatomically native PCL.

Primary Cementless Bipolar Long Stem Hemiarthroplasty for Unstable Osteoporotic Intertrochanteric Fracture in the Elderly Patients.

Background: Intertrochanteric fracture (ITF) is a major part of fracture in femoral head fracture. 95% of ITF are found in elderly patients. Osteosynthese is the preferred method of choice.

The effectiveness of knee osteoarthritis treatment by arthroscopic microfracture technique in combination with autologous bone marrow stem cells transplantation.

Objective: We aimed to evaluate the efficacy of the treatment of knee osteoarthritis (OA) patients by using microfracture technique in combination with autologous bone marrow stem cell transplantation.

Methods: A clinical study was conducted between November 2011 and January 2015 and involved 46 patients (aged from 46 to 69) with primary knee OA grade II and III (according to Kellgren-Lawrence classification) at the Orthopedic Trauma Department, Vietnam-Germany Friendship Hospital. Patients were randomly assigned to receive knee arthroscopy and then bone-marrow stem cells from their pelvic bones via injection.

Arthroscopic fixation of ACL avulsion fracture in the saint pault hospital: A review of treatment outcomes: Cohort study.

Background: The purpose of this research is to evaluate the results of arthroscopic suture fixation with fiber wires used as treatment for ACL avulsion fracture, and to determine how effective such a technique is when it comes to restoring of knee function.

Materials And Methods: This prospective study involves 28 patients, who underwent arthroscopic fixation of displaced ACL avulsion fractures at Saint Paul Hospital (Hanoi) from January 2014 to March 2018.

Results: The first three weeks were not marked with any abnormalities associated with post-operative sutures and hematomas, infectious complications were not detected either.

Correction to: Arthroscopic fixation of ACL avulsion fracture in the Saint Paul Hospital: a review of treatment outcomes.

The original version of this article unfortunately contained a mistake. One affiliation was incorrect.

The oral health-related section of the interRAI: Evaluation of test content validity by expert rating and assessment of potential reasons for inaccurate assessments based on focus group discussions with caregivers.

Objectives: To explore the failure of the oral health-related section of the interRAI (ohr-interRAI), this study investigated test content validity (A.) and reasons for inaccurate assessments (B.).