ClinicalTrials.gg
CompletedNCT06879756Updated Mar 17, 2025

Relationship Between Flexible Flat Foot and Lumbar Proprioception

An observational study in Flexible Flatfoot, Lumbar Spine Injury and Proprioceptive Disorders, sponsored by Cairo University. Completed at 1 site in Egypt. Open to participants aged 17 Years to 35 Years. Per ClinicalTrials.gov, last updated 2025-03-17.

Sponsored by Cairo University · Observational

Study type
Observational
Model
Other
Time perspective
Cross-sectional
Enrollment
57
Ages
17 Years to 35 Years
Sex
All
01

Study summary

The purpose of this study was to determine the relationship between flexible flatfoot and lumbar proprioception.

Read the detailed description

The human foot plays a crucial role in maintaining balance during various activities, and poor foot alignment, such as excessive subtalar joint pronation, can lead to leg, knee, and back pain. Proprioception is essential for active joint stability, as it indirectly modulates and provides motor response, helping the neuromuscular system maintain balance. Lumbar proprioception deficits can decrease the ability to assume a neutral spinal posture and coordinate muscle contraction, affecting spinal segmental function, dynamic joint stability, and good motor control. This study investigates the association between flatfoot and lumbar proprioception.

02

Conditions studied

  • Flexible Flatfoot
  • Lumbar Spine Injury
  • Proprioceptive Disorders
03

In context

Flatfoot

173 studies on the registry are indexed under Flatfoot; 44 are open to participants now.

This study's enrollment of 57 is above the median of 47 across 48 observational studies indexed under Flatfoot.

Browse Flatfoot studies →

Lead sponsor

Cairo University is the lead sponsor of 4,941 studies on the registry; 1,458 are open to participants now.

Of its 37 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
17 Years to 35 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

  • Subjects with flexible flat foot posture according to the Navicular Drop Test by Brody method: a normal foot (between five and nine mm of navicular drop), apronated foot (more than 10 mm of navicular drop).

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • 60 subjects of both sexes (females and males) were selected and assigned into two groups
  • Patient's age range was between 17 to 30 years old.
  • Subjects with flexible flat foot posture according to the Navicular Drop Test by Brody method: a normal foot (between five and nine mm of navicular drop), pronated foot (more than 10 mm of navicular drop).
  • Patients will be willing and able to participate in assessment without cognitive impairments that would limit their participation

Exclusion criteria

Exclusion Criteria:

The potential participation was excluded when they had one of the following criteria:

  • Repeated lower extremity injuries, such as fractures or deformities.
  • History of surgery to the lower extremity.
  • history of back surgery
  • rheumatologic disorders
  • spine infections
  • ankle fracture
  • lumbar fracture
  • spondylosis
  • lumbar disc bulge
  • spondylolisthesis
05

Study design

Observational model
Other
Time perspective
Cross-sectional
Enrollment
57 participants (actual)
Patient registry
No

Groups and cohorts

  • flexible flat feet

    28 patients suffering from flexible flatfoot were included in this group

  • normal subjects

    27 normal subjects were included in this group

06

What researchers measure

Primary outcomes

  1. assessment of the foot posture using navicular drop test

    The study evaluates foot posture in a weight-bearing position by placing the thumb and index fingers on the medial and lateral aspects of the talar dome. The subject is then asked to invert and evert the hind-foot and ankle until equal depressions are felt. The distance between the navicular tubercle and the floor is measured. The navicular-drop score is recorded, and the subject is classified into a pronated foot (more than 10 mm of navicular drop) and a normal foot (between five and nine mm of navicular drop).

    Time frame: at baseline

Secondary outcomes

  1. assessment of change of lumbar proprioception using Biodex system isokinetic dynamometer

    The Biodex System 3 Pro isokinetic device is used to measure lumbar proprioception. The device offers isokinetic, eccentric, isometric, and passive modes for all body joints and is equipped with various attachments and isolation straps. The system is equipped with a computer unit and a special testing unit for lumbar area testing. Subjects are instructed to sit on the lumbar attachment unit with their hips and knees flexed at 90 degrees, strapped around their thigh, pelvis, and trunk, and fold their arms above their chest. The selected test is active repositioning error/speed 30o/S, with a target position of 30° lumbar flexion. The device is locked in 0° position during trials, and the isokinetic device software calculates the mean of the three real testing results. The isokinetic machine prints the results, providing each trial's error value and the average error of the three trials.

    Time frame: at baseline

07

Study locations

1 site
  • out-patient clinic, faculty of physical therapy, Cairo university
    Cairo, Egypt
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Oct 2024 to primary completion in Jan 2025, 3 months.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 10, 2025
First posted
Mar 17, 2025
StartActual
Oct 9, 2024
Primary completionActual
Jan 15, 2025
CompletionActual
Jan 22, 2025
Last update
Mar 17, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 17, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06879756
Lead sponsor
Cairo University
Responsible party
Hoda Anwar Mohamed Elmeligy (principal investigator, Cairo University) — Principal investigator
First posted
Mar 17, 2025
Start date
Oct 9, 2024
Primary completion
Jan 15, 2025
Completion
Jan 22, 2025
Last update
Mar 17, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.

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