Association Between Average Daily Activity Counts and Knee Osteoarthritis Progression.

Objective: To explore the relationship between daily activity counts and knee osteoarthritis (OA) progression.

Design: A cohort study using Osteoarthritis Initiative (OAI) data included 610 participants aged 45-79 years with knee OA or at risk. Daily activity counts were measured using ActiGraph GT1M accelerometers.

Study on the secondary oxidation behavior and microscopic characteristics of oxidized coal gangue.

Spontaneous combustion of coal gangue (CG) hills has caused varieties of secondary disasters that seriously endanger the ecological environment of the world. The emission law of index gases and their oxidation kinetics during the secondary oxidation process of CG with different ranks of oxidation were studied by using the temperature programmed device and online mass spectrometer (MS). Fourier transform infrared spectroscopy (FTIR) was used to reveal the changes of the CG internal active functional groups.

Treatment of tibial traumatic osteomyelitis with negative pressure closure drainage combined with open bone grafting or bone migration and its effect on the levels of CRP, TNF-α and IL-6 in the serum.

Objective: To observe the effect of negative pressure closure drainage combined with open bone grafting or bone migration in the treatment of tibial traumatic osteomyelitis.

Methods: Eighty-six (86) cases of tibial traumatic osteomyelitis admitted to Hospital of the Chinese people's Liberation Army from September 2017 to September 2018 were randomly divided into control group and observation group, forty-three (43) cases each. Debridement, open bone grafting or bone migration was given to the control group.

Piezoelectric Effect and Ignition Characteristics of Coal Mine Gob Roof Collapse.

Existing studies of coal self-ignition and impact frictional sparks do not provide valid support for the analysis of ignition sources in all cases of methane explosions in the gob. In this paper, the explosion in the gob of the Renlou coal mine is used to investigate the piezoelectric effect and ignition characteristics of roof collapse in identifying a new ignition source of gas explosion. Experimental and theoretical analyses conclude that the piezoelectric effect is produced by quartz, which is the main constituent of the roof sandstone.

Three-dimensional printing of gastro-floating tablets using polyethylene glycol diacrylate-based photocurable printing material.

Extruded three-dimensional (3D) printing based on photocurable materials has shown good application prospects in the medical field. This has been attributed to the operational aspect that can be performed at room temperature and the high mechanical strength of the extrudate and final product. However, the commonly used photocurable polymer, polyethylene glycol diacrylate (PEGDA), has a low viscosity and exhibits a long crosslinking time.

Spatial Distribution and Asymmetry of Surface Electromyography on Lumbar Muscles of Soldiers with Chronic Low Back Pain.

This study investigated spatial distribution and asymmetry of surface electromyography on lumbar muscles during a sustained contraction in soldiers with and without chronic low back pain. Twenty healthy soldiers and twenty chronic low back pain (CLBP) soldiers had performed the Sorensen test with a duration of 60 seconds. The corresponding muscle fatigue, spatial distribution, and the asymmetry of muscle activity over bilateral paraspinal lumbar regions were measured by the high-density surface electromyography (HDsEMG).

Long noncoding RNA LINC00858 promotes osteosarcoma through regulating miR-139-CDK14 axis.

Long noncoding RNAs (lncRNAs) have been identified to modulate the tumorigenesis of human cancers. The in-depth of lncRNAs on human osteosarcoma oncogenesis is still ambiguous. In present study, functional and mechanism experiments were conducted to investigate the role of long intergenic non-protein coding RNA 00858 (LINC00858) on human osteosarcoma tumorigenesis.

LncRNA DICER1-AS1 promotes the proliferation, invasion and autophagy of osteosarcoma cells via miR-30b/ATG5.

Osteosarcoma is a prevalent primary malignant tumor and long non-coding RNAs (lncRNAs) have been validated to modulate the osteosarcoma tumorigenesis. In present study, our research team investigates the role of a novel identified lncRNA DICER1-AS1 on the tumor progression and autophagy. Results showed that lncRNA DICER1-AS1 was up-regulated in osteosarcoma cells using microarray analysis and RT-PCR.

Adaptation of muscles of the lumbar spine to sudden imbalance in patients with lower back pain caused by military training.

Objective: This study aims to investigate the effects of sudden load changes (expected and unexpected imbalance) on the activity of muscles of the lumbar spine and their central motor control strategy in military personnel with or without chronic low back pain (LBP).

Design: Bilateral sudden imbalance was examined (2 × 2 factorial design).

Setting: The 117th PLA Hospital, Hangzhou, China

Participants: Twenty-one male subjects with lower back pain and 21 male healthy control subjects were active members of the Nanjing Military Region land forces.

Treatment of unstable intertrochanteric fractures with percutaneous non-contact bridging plates.

We reviewed medical records of patients with unstable intertrochanteric fractures (AO/OTA type 31-A2, A3) treated with percutaneous non-contact bridging (NCB) plates and with gamma nails and compared operative data and outcomes. Fifty-two patients received NCB plates (27 males and 25 females; median age, 77.0 years) and 36 received gamma nails (15 males and 21 females; median age, 77.

Prevalence of low back pain among soldiers at an army base.

Background: Low back pain (LBP) is a major medical and social problem among working populations and is associated with high medical expense, loss of productivity, and disability. The aim of this study is to investigate the prevalence of LBP among soldiers and evaluate the possible causative factors in military training. The results may provide an insight into changes needed in military training that will reduce the occurrence of LBP among soldiers.

Influence of distal tibiofibular synostosis on ankle function.

Objective: To study the influence of distal tibiofibular synostosis on ankle function.

Methods: From October 1998 to October 2004, a total of 281 consecutive patients underwent operations because of ankle fractures or distal fractures of the tibia and fibula. Distal tibiofibular synostosis occurred after operation in 8 patients.

Treatment of displaced radial head fractures by internal fixation with absorbable pins.

Objective: To study the effect of internal fixation with absorbable pins on treatment of displaced radial head fractures.

Methods: From May 1999 to May 2004, 16 patients with displaced radial head fractures (Mason types II and III) were treated with internal fixation by absorbable pins. The duration of follow-up averaged 22.