Alternating Current Stimulation Promotes Healing of Bone Fractures in Rabbits.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Orthopedics

Background:

• Bone fractures represent a significant healthcare challenge requiring novel therapeutic strategies.
• Accelerating bone fracture healing is crucial for reducing patient morbidity and healthcare costs.

Purpose of the Study:

• To investigate the efficacy of alternating current stimulation (ACS) in enhancing bone fracture healing.
• To elucidate the underlying mechanisms by which ACS promotes bone regeneration.

Main Methods:

• A rabbit model of bone fracture was established to evaluate ACS.
• Fracture healing was assessed using X-ray, Micro-CT, HE staining, and immunohistochemistry.
• In vitro studies on pre-osteoblastic cells involved alizarin red S staining, ALP activity assays, and RNA-seq analysis.

Main Results:

• ACS significantly promoted bone formation and improved bone structure by day 14.
• Early increases in new bone formation were observed on days 3 and 7 (p < 0.05).
• ACS enhanced osteogenic differentiation in vitro and increased expression of BMP-2 and VEGF in vivo.

Conclusions:

• Alternating current stimulation (ACS) shows promise as a novel therapeutic approach for accelerating bone fracture healing.
• ACS may significantly reduce the time to fracture consolidation, particularly in the early healing stages.
• This method could alleviate the burden on patients suffering from bone fractures.