Safety and Efficacy of Simultaneous Application of High-intensity Focused Electromagnetic Field and Synchronized Radiofrequency for Non-invasive Fat Reduction and Muscle Toning in Inner Thighs: Magnetic Resonance Imaging Evaluation.

BACKGROUND

High-intensity focused electromagnetic field (HIFEM) and radiofrequency (RF) are established stand-alone techniques used in body contouring. However, data on the simultaneous combination and effects of these modalities for inner thigh treatment is lacking.

OBJECTIVE

To investigate the efficacy and safety of the HIFEM+RF procedure for non-invasive fat reduction in the inner thigh, as well as toning and strengthening of the inner thigh muscles.

METHODS

Sixteen women with an average age of 47.31±12.51 years were recruited. Each patient received four 30-minute bilateral treatments on the inner thighs once a week. Magnetic resonance imaging (MRI) scans of the treated area were evaluated at baseline, one-, and three-month follow-up visits for subcutaneous fat and muscle thickness changes. Anthropometric data and digital photographs were collected. Subject satisfaction and therapy comfort were evaluated.

RESULTS

The results peaked at three months, showing significant changes in both treated tissues. On average, the fat thickness was reduced by 27.4 percent (<0.001), while muscle tissue showed an average increase of 23.2 percent. Thigh circumference was reduced on average by 1.52cm, with a maximum change of -1.8cm, observed at 5cm below the gluteal crease. The treatment was considered comfortable with high patient satisfaction.

CONCLUSION

Analysis of magnetic resonance images and thigh circumference showed that therapy combining HIFEM and RF is highly effective for subcutaneous fat reduction and increased muscle thickness in inner thighs.