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Effect of Metformin Iontophoresis on Knee Osteoarthritis in Postmenopausal Women

Effect of Metformin Iontophoresis Combined With Physical Therapy Rehabilitation on Knee Osteoarthritis in Postmenopausal Women: A Randomized Double-Blind Placebo-Controlled Clinical Trial

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07395895
Enrollment
68
Registered
2026-02-09
Start date
2026-03-01
Completion date
2026-05-01
Last updated
2026-02-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osteoarthritis in Postmenopausal Women

Keywords

Metformin gel, Iontophoresis, Physical Therapy Rehabilitation, Osteoarthritis, Postmenopausal Women

Brief summary

This study is designed as a randomized, double-blind, placebo-controlled clinical trial with two parallel groups. All participants will receive a standardized physical therapy rehabilitation program. Participants will be randomly allocated into either a study group receiving metformin iontophoresis or a control group receiving placebo iontophoresis. Both participants and outcome assessors will be blinded to group allocation.

Detailed description

The study population will consist of postmenopausal women diagnosed with knee osteoarthritis. Postmenopause is defined as the absence of menstruation for at least 12 consecutive months. Participants will be randomly assigned to either the study or control group using a computer-generated randomization sequence. Allocation concealment will be ensured using sealed opaque envelopes. Both participants and outcome assessors will be blinded to the treatment allocation. The physical therapist applying iontophoresis will not be involved in outcome assessment.

Interventions

DRUGMetformin gel Iontophoresis

Metformin gel 2% Iontophoresis Combined with Physical Therapy Rehabilitation

Iontophoresis with neutral gel Combined with Physical Therapy Rehabilitation

Sponsors

Badr University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Caregiver)

Eligibility

Sex/Gender
FEMALE
Age
50 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* • Postmenopausal women aged 50-70 years. * Clinical and radiographic diagnosis of knee osteoarthritis according to the American College of Rheumatology criteria. * Radiographic severity classified as Kellgren-Lawrence grade II or III. * Chronic knee pain for a duration of at least 3 months. * Pain intensity ≥4 on the Visual Analog Scale. * Ability to ambulate independently with or without assistive devices. * Ability to understand and follow instructions. * Willingness to participate and provide written informed consent.

Exclusion criteria

* • Severe knee osteoarthritis (Kellgren-Lawrence grade IV). * History of knee surgery or intra-articular injections within the previous 6 months. * Presence of inflammatory rheumatic diseases such as rheumatoid arthritis or gout. * Neurological disorders affecting lower limb function. * Uncontrolled metabolic, cardiovascular, or systemic diseases. * Current or recent use of metformin or other antidiabetic medications. * Skin lesions, infections, or hypersensitivity at the iontophoresis site. * Contraindications to electrotherapy such as pacemakers or implanted electronic devices. * Body mass index ≥35 kg/m². * Participation in another clinical trial within the last 3 months.

Design outcomes

Primary

MeasureTime frameDescription
Pain intensityat baseline, after 6 weeks and after 12 weeksassessed using the Visual Analog Scale.
Functional statusat baseline, after 6 weeks and after 12 weeksassessed using the WOMAC index

Countries

Egypt

Contacts

CONTACT‪Eman swan‬, Ph d
eman.said@buc.edu.eg+201090111013

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 10, 2026