Anatomic Surface Measurement of the Lumbar Laminae for Safely Resection During Percutaneous Endoscopic Surgery: A Computed Tomography-Based 3-Dimensional Morphometric Study.

Objective: The aim of this study was to use computed tomography-based 3-dimensional morphometric imaging to precisely quantify the anatomic parameters of the lumbar laminae and increase the precision of laminar fenestration during percutaneous endoscopic spinal surgery.

Methods: Lumbar computed tomography data for the L1-L5 vertebrae of 62 patients (310 total vertebrae) were collected. Laminar width, height, thickness, and bilateral angle were measured in detail, and each parameter was compared and analysed.

Effectiveness of early cervical functional exercise in patients after anterior cervical discectomy and fusion: A randomized controlled trial.

Objective: To observe the effect of early cervical functional exercise (CFE) on clinical outcomes and safety of patients after anterior cervical discectomy and fusion (ACDF).

Methods: Sixty patients who underwent ACDF from September 2019 to September 2020 were analyzed and randomly divided into two groups: the CFE group (27 cases) and the usual care (UC) group (33 cases). Then, all patients in the two groups received routine postoperative guidance care at the same time.

Comparison of the predictive values of MRI-based vertebral bone quality scores for the determination of osteoporosis in different diseases.

Purpose: The study aimed to examine the consistency of vertebral bone quality (VBQ) scores for assessing osteoporosis across different etiologies and explore the predictive value of various VBQ scores for fragility vertebral fractures.

Methods: Patients with fragility fractures were matched by age and sex to patients with lumbar degeneration. VBQ scores were calculated in T1- and T2-weighted magnetic resonance imaging.

Does the sizing of current cervical disc arthroplasty systems match Chinese cervical anatomic dimensions?

The objectives of this study were to analyze the computed tomography (CT) scan imaging data of the cervical spine from healthy volunteers and to correlate the measurements to the dimensions of current cervical disc arthroplasty systems. A total of 130 participants (78 males and 52 females) with a mean age of 41.0 years (range 18.

Ideal entry point and trajectory for C2 pedicle screw placement in children: a 3D computed tomography study.

Purpose: To identify the ideal entry point for pediatric C2 pedicle screw and to obtain parameters of it for the indication of pediatric atlantoaxial fusion arthrodesis.

Methods: The pediatric cervical CT images were reconstructed into the 3D digital models and the C2 vertebrae were separated. The location of ideal entry point and screw placement related linear and angular parameters were assessed on the 3D digital models.

Genetic polymorphisms of the TNF-α-308G/A are associated with metabolic syndrome in asthmatic patients from Hebei province, China.

Asthma is a complex inflammatory disease involving the critical actions of several important cytokines. Epidemiological data show that obesity could increase the risk of asthma, and insulin resistance, or metabolic syndrome are an important risk factor for obesity asthma. Some studies identified that upstream of the transcription start site within the TNF-α gene promoter region-308 polymorphism was associated insulin resistance or metabolic disorders, while this site was closely related to asthma.

[The electroluminescence spectra of InGan/GaN blue LEDs during aging time].

The luminescence spectra of InGaN/GaN multiple quantum wells light-emitting diodes under low level injection current (<4 mA) during aging process was investigated for the first time. Comparing the electroluminescence (EL) spectra of LEDs before and after aging time it was found that the peak wavelength and the full width at half maximum (FWHM) decreased with stress time and the changes of EL spectrum had two different stages-drastic decrease at the early stress stage and slow decrease later showing the same trend with the output optical power of LEDs, which indicates that the effective polarization electric field of LEDs becomes weak during the aging process and the change has a clear correlation with the increase of the defects in the multiple quantum wells of LEDs. Electrical measurement revealed that junction capacitance (C(j)) under the same junction voltage (V(j) = 1.