Uncovering spatiotemporal development patterns of AIDS in China: A study using panel data with Joinpoint Regression analysis and Spatial Clustering.

The HIV/AIDS epidemic in China is severe and complex. Comprehensive spatiotemporal analysis provides valuable insights for intervention policy formulation. Previous studies often overlooked local changes in time trends and regional disease development patterns.

Anatomical cup implantation assisted with dynamic 3D planning improves functional outcomes in primary total hip arthroplasty: A retrospective study.

Background: Anatomical cup implantation is a promising approach in primary total hip arthroplasty (THA) and improves functional outcomes.

Objective: We aimed to evaluate the cup position and functional outcomes in primary THA with preoperative dynamic 3D planning.

Methods: We retrospectively reviewed 54 hips in 48 patients who underwent primary THA with anatomical cup implantation (mean follow-up time: 52 months).

Experimental and Numerical Investigation on the Influence Factors of Damage Interference of Patch-Repaired CFRP Laminates under Double Impacts.

The impact responses of a patch-repaired carbon-fiber-reinforced polymer (CFRP) specimen under double impacts were compared to study the damage interference mechanism through the combination of experiment and numerical analysis. A three-dimensional finite element model (FEM) with iterative loading based on continuous damage mechanics (CDM) and a cohesive zone model (CZM) was employed to simulate the double-impacts testing with an improved movable fixture at an impact distance of 0 mm-50 mm. The influence of impact distance and impact energy on the damage interference was explored by mechanical curves and delamination damage diagrams of the repaired laminates.

DMU-Net: A Dual-Stream Multi-Scale U-Net Network Using Multi-Dimensional Spatial Information for Urban Building Extraction.

Automatically extracting urban buildings from remote sensing images has essential application value, such as urban planning and management. Gaofen-7 (GF-7) provides multi-perspective and multispectral satellite images, which can obtain three-dimensional spatial information. Previous studies on building extraction often ignored information outside the red-green-blue (RGB) bands.

Pathoanatomy and Injury Mechanism of Typical Maisonneuve Fracture.

Objective: Maisonneuve fracture is a special type of injury which are rare in clinic. The manifestation of such fractures is variable. The aim of this study is to describe the pathoanatomical features of typical Maisonneuve fracture on the basis of radiographs, computed tomography (CT) scans, magnetic resonance imaging (MRI), and intraoperative exploration findings, and to investigate the injury mechanism of this variety.

[Application of anatomical approach osteoligaments repair technique in treatment of pronation ankle fractures].

Objective: To investigate the safety and effectiveness of anatomical approach osteoligaments repair technique in treatment of pronation ankle fractures.

Methods: The clinical data of 53 patients with pronation ankle fractures between April 2015 and October 2016, who were treated with anatomical approach osteoligaments repair technique applied for fracture reduction and internal fixation, were analysed retrospectively. There were 35 males and 18 females with an average age of 33.

Optimization of electronic prescription for parallel external fixator based on genetic algorithm.

Purpose: For the parallel external fixator, there are some defects, such as uneven distraction rate, unbearable pain and uncontrollable movement trajectory in practical clinical applications. In order to solve the problems, a new deformity correction algorithm, which is used to calculate the elongation of the six struts, is developed. Meanwhile, the corresponding computer software for getting the electronic prescription is developed.

[Progress of total ankle arthroplasty for end-stage ankle osteoarthritis].

Objective: To review the progress of total ankle arthroplasty (TAA) in treatment of end-stage ankle osteoarthritis (AOA).

Methods: The domestic and foreign literatures about TAA in recent years were reviewed. The current status and progress of TAA were summarized from the results of traditional and computer-assisted TAA clinical outcomes.

[Study on sustentaculum tali screw placement for constant fragment of calcaneal fracture].

Objective: To investigate the anatomical characters of the sustentaculum tali (ST), accurate entry point and direction for the placement of ST screw from posterior subtalar joint facet to the constant fragment (CF) in calcaneal fractures.

Methods: A total of 100 patients with calcaneal fractures performed ankle CT scans were enrolled between January 2016 and April 2016. According to the inclusion criteria, the clinical data of 33 patients were analyzed, including 18 males and 15 females, with a median age of 41.

Long non-coding RNA ZFAS1 sponges miR-486 to promote osteosarcoma cells progression and metastasis and .

Long noncoding RNAs (lncRNAs) have been wildly demonstrated to participate in the osteosarcoma tumorigenesis. ZFAS1 is a novel identified lncRNA, however, its role in osteosarcoma is still unclear. In present study, we utilize lncRNA microarray assay to screen the lncRNA expression profile in osteosarcoma tissue, and investigate the regulatory function of ZFAS1 in osteosarcoma.

[EFFECT OF MEDIAL 1/3 ANATOMICAL ORIENTATION OF TIBIAL TUBERCLE ON ROTATIONAL ALIGNMENT OF Gemini MK-II TIBIAL COMPONENTS IN TOTAL KNEE ARTHROPLASTY].

Objective: To investigate the effect of medial 1/3 anatomical orientation of the tibial tubercie on tne rotational alignment of Gemini MK-II tibial components in total knee arthroplasty (TKA).

Methods: Between March 2011 and December 2012, 61 cases (67 knees) of varus knee osteoarthritis underwent Gemini MK-II knee arthroplasty, and the clinical data were retrospectively analyzed. There were 12 males and 49 females, with an average age of 67.

Safety and efficacy of intra-articular tranexamic acid injection without drainage on blood loss in total knee arthroplasty: A randomized clinical trial.

Background: Major blood loss is unavoidable after primary total knee arthroplasty (TKA). The aim of this study was to determine if tranexamic acid (TXA) can reduce major blood loss following TKA.

Methods: In this double-blind, randomized, placebo-control trial, 60 patients treated with unilateral primary cement TKA between August 1st 2013 and September 30th 2013 were randomized into TXA 500 mg intra-articular injection without drainage (test group, 30 knees) and 30 patients with saline intra-articular injection (control group, 30 knees).

[Determination of tibial bone resection thickness by lateral tibiofemoral joint 90° flexional gap in total knee arthroplasty for varus osteoarthritic knees].

Objective: To investigate the efficiency of total knee arthroplasty (TKA) for varus osteoarthritic knees with tibial bone resection determined by lateral tibiofemoral joint 90° flexional gap measurement.

Methods: Between March and June 2013, 60 patients (60 knees) with varus osteoarthritic knees underwent TKA. All patients were randomly divided into traditional osteotomy group (control group, 30 cases) and lateral tibiofemoral joint 90° flexional gap measurement resection group (trial group, 30 cases).

[Research development of diagnosis and treatment of meniscal root tears].

Objective: To analyze the causes of meniscal root tears (MRTs), and to review the progress in its diagnosis and therapy.

Methods: The published literature about MRTs was extensively reviewed and summarized.

Results: MRTs can be divided into acute traumatic injuries and chronic degenerative injuries; MRI examination is an effective way to diagnose according to meniscal extrusion, ghost sign, and meniscal root linear defects.

Comparison of quadriceps snip and tibial tubercle osteotomy in revision for infected total knee arthroplasty.

Purpose: Controversies exist regarding the ideal approach in a revision total knee arthroplasty for infection, providing adequate exposure with minimum complications. The purpose of this study was to compare the results of second stage revision total knee arthroplasty (TKA) between tibial tubercle osteotomy (TTO) and quadriceps snip (QS) approaches for infected TKA.

Methods: The clinical and radiological outcomes of 27 patients of TTO and 21 patients of QS in second stage revision TKA for infected TKA were compared with an average follow up of 51 months.

Femoral stress and strain changes post-hip, -knee and -ipsilateral hip/knee arthroplasties: a finite element analysis.

Objective: To identify the optimal ratio of free femur for minimizing the risks of periprosthetic fracture.

Methods: Three dimensional models of the femur with hip and knee stem elongation were constructed. With the distal femoral condylar surface fixed in a three dimensional model, the femoral head loading was performed according to the methods described by Huiskes and van Rietbergen in the models of hip replacement, knee replacement with or without hip stem or knee stem elongation.

[Management of deep infection after total knee arthroplasty].

Objective: To evaluate the clinical treatment methods of deep infection after total knee arthroplasty (TKA) and its effectiveness.

Methods: Between January 2004 and January 2010, 32 cases (32 knees) of deep infection after TKA were treated, including 13 males and 19 females with an average age of 64.6 years (range, 52-79 years).

Antibiotic-loaded articulating cement spacers in two-stage revision for infected total knee arthroplasty: individual antibiotic treatment and early results of 21 cases.

Objective: To detail our early experience and technique of a modified two-stage reimplantation protocol using antibiotic-loaded articulating cement spacers (ALACSs) for treatment of late periprosthetic infection after total knee arthroplasty (TKA).

Methods: From January 2006 to February 2009, a series of 21 patients (21 knees) with late infected TKAs were treated by radical debridement and removal of all components and cement, and then articulating spacers were implanted using antibiotic-impregnated bone cement. For this purpose, 4 g vancomycin powder was mixed with per 40 g cement.

Does mismatch of the femoral component aspect ratio influence the range of knee flexion after posterior-stabilized total knee arthroplasty?

Objective: To study whether the range of knee flexion (ROF) is affected by geometrical mismatch of the femoral component and the resultant change in the posterior condylar offset (PCO) after high-flexion posterior-stabilized total knee arthroplasty (TKA).

Methods: One hundred osteoarthritic patients (50 males and 50 females) underwent femoral osteotomy by the anterior referencing technique. The PCO for each patient was measured from lateral radiographs before, during and 2 years after TKA.

[Autologous bone grafting plus screw fixation for medial tibial defects in total knee arthroplasty].

Objective: To investigate the efficacy of autologous bone grafting plus screw fixation to reconstruct the medial tibial defects in total knee arthroplasty (TKA).

Methods: From November 2001 to November 2004, 46 patients (50 knees) with medial tibial bone defects underwent TKA at our hospital. There were 16 males (16 knees) and 30 females (34 knees).

[Management of femoral neck fracture post total knee arthroplasty].

Objective: To investigate the risk factors, management and prognosis of femoral neck fracture post total knee arthroplasty (TKA).

Methods: From January 2003 to August 2009, 45 cases of femoral neck fracture post TKA were treated. There were 8 males and 37 females with an age range of 56 - 81 years old.

[Management of postoperative pain after total knee arthroplasty].

Objective: To evaluate causes and clinical management of postoperative pain after total knee arthroplasty (TKA).

Methods: From January 2004 to June 2009, 41 patients (44 knees) with knee pain post TKA were treated. There were 9 male and 32 female patients aging from 51 to 84 years with a mean of 63.

[Effect of distal femoral flexion angle on sagittal alignment of femoral prosthesis and function recovery after total knee arthroplasty].

Objective: To analyze the effect of the distal femoral flexion angle (DFFA) on the sagittal alignment of femoral prosthesis and function recovery after total knee arthroplasty (TKA).

Methods: Between January 2007 and January 2009, 35 patients (35 knees) whose distal femoral flexion angle (DFFA) was more than 6 degrees underwent TKA. Reference to the method by Oswald for DFFA measurement, 35 patients were divided into 2 groups: group A (n = 23, 6 degrees < DFFA < 12 degrees, long intramedullary rod system) and group B (n = 12, DFFA > 12 degrees, short intramedullary rod system).

[Management of extension apparatus in total knee arthroplasty of osteoarthritis].

Objective: To investigate the management of extension apparatus and clinical results of total knee arthroplasty (TKA) of osteoarthritis.

Methods: Between June 2007 and June 2009, 386 patients (460 knees) with osteoarthritis received TKA, including 216 left knees and 244 right knees. There were 125 males (145 knees) and 261 females (315 knees) with an average age of 60.

[Effect of posterior condylar offset on knee flexion after high-flex posterior-stabilized total knee arthroplasty].

Objective: To determine the effect of the posterior condylar offset (PCO) on intra- and post-operative knee flexion after total knee arthroplasty (TKA) using a high-flex posterior-stabilized (PS) fixed-bearing prosthesis and to discuss it's importance in femoral prosthesis design.

Methods: The clinical and radiographic materials of 100 consecutive patients (100 knees) were prospectively studied, including 50 men and 50 women, who had undergone primary NexGen LPS-Flex TKAs for end-stage osteoarthritis. All operations were performed by a single surgeon using the same operative technique between March 2005 and October 2006.