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Completed

NCT Number: NCT06879756

Relationship Between Flexible Flat Foot and Lumbar Proprioception

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

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Key information

Conditions

Flexible Flatfoot Back Injuries Congenital Abnormalities Congenital, Hereditary, and Neonatal Diseases and Abnormalities Flatfoot Foot Deformities Foot Deformities, Acquired Foot Deformities, Congenital Limb Deformities, Congenital Lower Extremity Deformities, Congenital Lumbar Spine Injury Musculoskeletal Abnormalities Musculoskeletal Diseases Nervous System Diseases Neurologic Manifestations Pathological Conditions, Signs and Symptoms Proprioceptive Disorders Sensation Disorders Signs and Symptoms Somatosensory Disorders Spinal Injuries Talipes Wounds and Injuries

Age range

17 year–35 year

Sex eligibility

All sexes

Study type

Observational

Primary location

out-patient clinic, faculty of physical therapy, Cairo university

Cairo, Egypt

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

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

Treatment and study plan

Primary outcomes

  1. assessment of the foot posture using navicular drop test

    Time frame: at baseline

    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).

Secondary outcomes

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

    Time frame: at baseline

    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.

Sponsors and collaborators

Lead sponsor

Cairo University

Other

Registry information

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Mar 17, 2025
Registry last updated
Mar 17, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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