Comparison of the effects of electrical field stimulation and low-level laser therapy on bone loss in spinal cord-injured rats.

Objective: This study investigated the effects of low-level laser therapy (LLLT) and electrical stimulation (ES) on bone loss in spinal cord-injured rats.

Materials And Methods: Thirty-seven male Wistar rats were divided into four groups: standard control group (CG); spinal cord-injured control (SC); spinal cord-injured treated with laser (SCL; GaAlAs, 830 nm, CW, 30 mW/cm, 250 J/cm(2)); and spinal cord-injured treated with electrical field stimulation (SCE; 1.5 MHz, 1:4 duty cycles, 30 mW, 20 min).

Comparative study of how low-level laser therapy and low-intensity pulsed ultrasound affect bone repair in rats.

Objective: This study aimed to compare the consequences of low-level laser therapy (LLLT) and low-intensity pulsed ultrasound (LIPUS) on bone repair.

Background Data: Many studies have assessed the effects of LLLT and LIPUS on bone repair, but a comparison of them is rare.

Methods: Male Wistar rats (n = 48) with tibial bone osteotomy were used.

Metallic biomaterials TiN-coated: corrosion analysis and biocompatibility.

Corrosion processes due to contact with the physiological environment should be avoided or minimized in orthopedic implants. Four metallic substrates frequently used as biomaterials: pure Ti, Ti-6Al-4V alloy, ASTM F138 stainless steel, and Co-Cr-Mo alloy, were coated with TiN using the physical vapor deposition (PVD) technique. These coatings have been screened by polarization curves in physiological solutions.

Endurance test on a textured diaphragm for the auxiliary total artificial heart (ATAH).

We performed an endurance test on a textured diaphragm made of polyurethane (BioSpan, The Polymer Technology Group, San Francisco, CA, U.S.A.