[Biodegradable devices for annulus fibrosus defect closure after lumbar discectomy].

Objective: To study the properties of materials and select the most suitable one for appropriate device covering annulus fibrosus defect after lumbar discectomy.

Material And Methods: Prototype devices made of poly(L-)lactide, polycaprolactone (PLC) and copolymers of(L-)lactide and ε-caprolactone (LCL) without prior purification were used. Sponge materials were prepared using 1.

[Interbody cage implantation in cadaveric model of the ram spine: biomechanical tests].

Objective: To evaluate the mechanical properties of poly(L-lactide) cage prototypes on cadaveric models of the lumbar spine ram model.

Material And Methods: Prototypes of neck devices were developed on the Ender 2v2 3D printer («Shenzhen Creality 3D Technology Co., Ltd.

Theoretical and Experimental Investigation of 3D-Printed Polylactide Laminate Composites' Mechanical Properties.

The purpose of this work is to theoretically and experimentally investigate the applicability of the Tsai-Hill failure criterion and classical laminate theory for predicting the strength and stiffness of 3D-printed polylactide laminate composites with various raster angles in mechanical tests for uniaxial tension and compression. According to the results of tensile and compression tests, the stiffness matrix components of the orthotropic individual lamina and strength were determined. The Poisson's ratio was determined using the digital image correlation method.

[Effectiveness of physical therapy after total hip arthroplasty at the third stage of rehabilitation using a telemedicine program].

Objective: To assess the quality of life and efficacy of telemedicine technologies for rehabilitation after total hip replacement.

Material And Methods: The study included 60 patients aged 40-75 years after total hip replacement. All patients were divided into two groups by simple randomization.

[Efficiency of balance training with stabilizing platform in early postoperative rehabilitation of patients after arthroplasty].

Objective: To evaluate the effectiveness of balance training on stabilizing platform (HUBER360) in early postoperative rehabilitation of patients after total knee arthroplasty.

Material And Methods: We examined 60 patients after total knee arthroplasty. Mean age of patients was 69.