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Clinical Trials/NCT07389343
NCT07389343
Recruiting
Not Applicable

Immediate Effect of a Semirigid Foot Insole on Radiological Foot Angles in Flexible Pes Planus

Fatma El Zahraa1 site in 1 country30 target enrollmentStarted: August 27, 2025Last updated:
InterventionsFoot Insole

Overview

Phase
Not Applicable
Status
Recruiting
Sponsor
Fatma El Zahraa
Enrollment
30
Locations
1
Primary Endpoint
Radiological foot angles

Overview

Brief Summary

The goal of this clinical trial is to investigate the effect of a semirigid foot insole on radiological angle correction in people with asymptomatic flexible flat feet. The X-ray will be performed while standing barefoot one time and the other while standing on the insole from 2 views.

Detailed Description

This study will be conducted on 30 male and female subjects with flexible pes planus. Clinical diagnosis for flexible pes planus will be made through the navicular drop test (NDT) and the Foot Posture Index (FPI). The study included asymptomatic people with flexible pes planus. If the pain is greater than 3 out of 10 on the numeric pain rating scale in the last 3 months, aged 18-35, and BMI max 29.9 kg/cm². The subjects will be excluded if they have osteoarthritis of the joints of the foot (excluded by x-ray), foot deformities (e.g., hallux valgus), old fractures of the foot, previous injuries to the ankle, or previous surgeries to the lower limb. Calcaneal Spur, Foot and Ankle Ligament Tear, Systemic diseases such as rheumatoid arthritis (gouty arthritis, an autoimmune disease) and neurological diseases. The X-ray is the gold standard for assessment of adult-acquired flat foot deformity. Two views are used: anteroposterior (AP) and lateral views. A ruler and protractor will be used for manual measurements of X-ray foot. The subject will stand barefoot, and a weight-bearing X-ray will be taken from lateral and AP views once, without an insole, and another photo will be taken with an insole. The subject will stand barefoot, and a weight-bearing X-ray will be taken from lateral and AP views once, without an insole, and another photo will be taken with an insole.

The angles will be measured:

The gathered angles aim to evaluate the alignment of the foot's three arches. In the lateral view, the following angles will be measured and evaluated with without the insole: the lateral talo-1st metatarsal angle, the calcaneal inclination angle, the angle of Hibbs, the calcaneal-5th metatarsal angle, and the navicular height.

In the AP view, the following angles will be measured and evaluated with without the insole: The lateral talo-1st metatarsal angle, Talo-2nd metatarsal angle, The talocalcaneal angle, Talonavicular coverage angle and First-fifth metatarsal angle

Study Design

Study Type
Interventional
Allocation
Na
Intervention Model
Single Group
Primary Purpose
Treatment
Masking
None

Eligibility Criteria

Ages
18 Years to 35 Years (Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Asymptomatic people with flexible pes planus. If the pain is greater than 3 out of 10 on the visual analog scale in the last 3 months, the patient is considered to have symptomatic flat feet (Mahdiyar et al., 2021).
  • BMI max 29.9 kg/cm².

Exclusion Criteria

  • Osteoarthritis of the joints of the foot (excluded by x-ray).
  • Foot Deformities (e.g. Hallux Valgus)
  • Old fractures of the foot.
  • Previous injuries to the ankle.
  • Previous surgeries to the lower limb.
  • Calcaneal Spur.
  • Foot and ankle ligaments tear.
  • 8- Systemic diseases such as rheumatoid arthritis. (Gouty arthritis, autoimmune disease)
  • Neurological diseases.

Arms & Interventions

Semirigid foot insole

Experimental

A semi-rigidly designed foot insole will be used to investigate the correction provided for flat-foot angles.

Intervention: Foot Insole (Other)

Outcomes

Primary Outcomes

Radiological foot angles

Time Frame: Immediately after the insole insertion. The radiology will be taken one time barefoot and second time with the insole insertion, and the researcher will measure the foot angles pre- and post-insole to measure the correction.

In the lateral view,the lateral talo-1st metatarsal angle, the calcaneal inclination angle, the angle of Hibbs, the calcaneal-5th metatarsal angle, and the navicular height. In the AP view,The lateral talo-1st metatarsal angle, Talo-2nd metatarsal angle, The talocalcaneal angle, Talonavicular coverage angle and First-fifth metatarsal angle

Secondary Outcomes

No secondary outcomes reported

Investigators

Sponsor
Fatma El Zahraa
Sponsor Class
Other
Responsible Party
Sponsor Investigator
Principal Investigator

Fatma El Zahraa

lecturer assistant at faculty of physical therapy-Ahram Canadian University AND PHD candidate at Faculty of physical therapy

Cairo University

Study Sites (1)

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