Revolutionary MRI Study Unveils Changes in Pelvic Floor Dynamics with Femikushion Happiness™

Dr. Koichi Nagao, a urologist and director at Ginza Repro Surgery in Chuo-ku, Tokyo, made headlines with his presentation at the 28th Annual Meeting of the Japanese Society of Women's Pelvic Floor Medicine. The study, titled "Changes in the Pelvic Floor Induced by Wearing Femikushion Happiness™ - An MRI Analysis," took place on July 25-26, 2026, at the Nagara River International Conference Hall. This remarkable research focused on how the Femikushion Happiness™, aimed at supporting the pelvic floor, impacts pelvic structures, particularly through MR imaging.

Study Background

In recent years, various corrective undergarments designed to support weakened pelvic floors have emerged in the market. While some reports suggest that these products can alleviate symptoms related to stress urinary incontinence and pelvic organ prolapse, there remains insufficient understanding of the direct effects they have on pelvic support structures. To address this gap, Dr. Nagao's research specifically examined the changes induced by the Femikushion Happiness™ on the pelvic floor through MRI imaging.

Research Methodology

The study involved a healthy female volunteer aged 55 (BMI 21.5 and a history of three childbirths). The participant underwent MRI imaging in a state of mild urinary retention after performing light office work. Images were captured before and immediately after donning the Femikushion Happiness™, under the same conditions while lying supine—ensuring no pelvic floor muscle contraction or increased abdominal pressure during the imaging.

Key Findings

The analysis revealed several notable changes in pelvic floor structures due to wearing the Femikushion Happiness™:

- The angle of the puborectalis muscle changed from 40 degrees to 51 degrees.
- The bladder neck and base shifted approximately 1.5 cm forward.
- The posterior urethral angle exhibited a substantial change from 150 degrees to 90 degrees.

These MRI comparisons clearly indicated that wearing the Femikushion Happiness™ produces significant alterations in pelvic support structures.

Everyday Observations

In addition to the MRI assessments, Dr. Nagao documented the participant's urinary experiences during daily activities. For instance, on a day when she played golf, the participant reported a reduction in urinary frequency from 15 to just 7 times over a 17-hour period while wearing the Femikushion Happiness™ compared to not wearing it.

Moreover, while she felt a pressing urge to urinate during traffic jams without the support garment, the sensation decreased significantly when wearing it, allowing her to engage in activities without constantly worrying about restroom availability. Evaluations using the CLSS and OABSS scales highlighted a dramatic shift, with her previously severe urge to urinate reported as returning to normal ranges while wearing the device.

Conclusion of Findings

This preliminary observational study involved only one healthy volunteer. However, the results from the MRI evaluations suggest that wearing Femikushion Happiness™ prompts significant changes in pelvic floor dynamics, such as raising the puborectalis muscle and shifting the bladder outlet forward while altering the posterior urethral angle.

Dr. Nagao emphasized that more extensive studies will be planned to verify these observations with a larger sample size.

About Femikushion Happiness™

Femikushion Happiness™ is a general medical device designed to support the pelvic floor from below. It aims to provide conservative care for conditions like pelvic organ prolapse and to offer physical support during daily activities.

For more information, visit the official website: Femikushion Happiness™

Presentation Overview

- Conference Name: 28th Annual Meeting of the Japanese Society of Women's Pelvic Floor Medicine
- Presentation Number: O-115
- Presentation Title: Changes in the Pelvic Floor Induced by Wearing Femikushion Happiness™ - An MRI Analysis
- Presenter: Dr. Koichi Nagao, Professor Emeritus at Toho University Medical School / Director of Ginza Repro Surgery
- Session: General Presentation Session 16 "Pessaries and Support Underwear"
- Presentation Date: July 26, 2026

For more details, visit: 28th JFPM Meeting

Additional Comments from Dr. Koichi Nagao

Dr. Nagao noted, "Many patients suffer from issues like urinary incontinence due to pelvic organ prolapse or weakened pelvic floor muscles, but there is a lack of reports showing the actual changes in the pelvis that occur with conservative care. This study represents a critical first step in objectively evaluating these changes through MRI. We will continue to build a body of clinical research and disseminate our findings to ensure that patients receive the best possible care."

For more about Dr. Koichi Nagao, visit: Dr. Nagao's Profile

More Information

- Institute Name: Medical Corporation Micro Association, Ginza Repro Surgery
- Location: 2-8-19 Ginza, Chuo-ku, Tokyo, FPG Links GINZA 6F
- Website: Ginza Repro Surgery
- YouTube Channels:
- Dr. Nagao's Male Infertility Solution Channel: YouTube Channel
- Lymphedema Advisor Keiko Mitsui / Ginza Repro Surgery: YouTube Channel
- Keiko's Honest Body Care Lab: YouTube Channel