Electrostimulation: uses and applications for periprosthetic capsular contracture: experimental model

Area of Science:

• Biomaterials science
• Regenerative medicine
• Medical device engineering

Background:

• Previous studies show low-voltage galvanic electrostimulation (<300 mV) increases collagen production and scarring.
• The effects of electrostimulation with different parameters on scarring are not well understood.

Purpose of the Study:

• To investigate the impact of varying galvanic electrostimulation intensities on periprosthetic capsule formation.
• To determine if higher electrostimulation intensities can inhibit scar tissue development.

Main Methods:

• Designed and manufactured custom electrostimulators for the study.
• Utilized 40 rats, divided into 10 groups (5 smooth, 5 textured implants).
• Applied varying electrostimulation from postoperative day 3 to 15, including a control group.

Main Results:

• Implant texture did not influence capsular contracture.
• Electrostimulation <300 mV resulted in thicker capsules compared to controls.
• A 600 mV intensity significantly reduced periprosthetic capsule thickness compared to controls and other groups.

Conclusions:

• Direct galvanic current electrostimulation at 600 mV, with polarity reversal, inhibits periprosthetic capsule formation in rats.
• This suggests potential therapeutic applications for high-intensity electrostimulation in managing scar tissue.