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CompletedNCT05595902Updated Jul 30, 2026

Normative Value for Navicular Drop Test in Older Adults

An observational study in Healthy, sponsored by Istanbul Medeniyet University. Completed at 1 site in Turkey (Türkiye). Open to participants aged 65 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-07-30.

Sponsored by Istanbul Medeniyet University · Observational

Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
100
Ages
65 Years and older
Sex
All
01

Study summary

The aim of this study is to determine the normative values of navicular height and navicular drop in individuals over 65 years of age. The secondary aim is to investigate the effects of age, gender, and body mass index on these normative values.

02

Conditions studied

  • Healthy
03

In context

Lead sponsor

Istanbul Medeniyet University is the lead sponsor of 188 studies on the registry; 18 are open to participants now.

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

04

Who can participate

Ages eligible
65 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Healthy older adults

Inclusion criteria

  • Being 65 years or older
  • Having a body mass index between 18.5 and 29.0 kg/m2

Exclusion criteria

Exclusion Criteria:

  • Having chronic diseases that affect the foot structure and connective tissue (such as diabetes mellitus, rheumatoid arthritis, gout, etc.).
  • Have had foot or ankle surgery in the last 6 months
  • Having orthopedic or neurological deformities (related to stroke, Parkinson's, multiple sclerosis, spinal cord injury, etc.) that will affect the foot structure and mobility.
  • Dependence on standing and ambulation (except independence gained through the use of assistive devices)
05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
100 participants (actual)
Patient registry
No

Groups and cohorts

  • Young older adults

    ≥65-\<75 years of age

  • Older adults

    ≥75-\<90 years of age

  • ≥90 years old
06

What researchers measure

Primary outcomes

  1. Navicular Drop Test

    The navicular height and the amount of navicular drop will be made separately for each foot. The navicular prominence is found by palpation and marked with a marker pen when the individual is in a sitting position with the hips and knees flexed to 90 degrees and the subtalar joint in neutral position (the subtalar joint is palpated and the talus is in a neutral position). The height of the navicular protrusion from the ground is measured with a rigid ruler. Then, while the person stands on both feet equally, the height of the navicular protrusion from the ground is also measured with a ruler. The difference between the two measurements is noted as the amount of "navicular drop" (NDT).

    Time frame: 10 minutes

Secondary outcomes

  1. Age

    Age

    Time frame: 1 minute

  2. Gender

    Gender

    Time frame: 1 minute

  3. Body-Mass index

    weight/ (height)2

    Time frame: 3 minutes

  4. Foot Posture Index

    FPI

    Time frame: 15 minutes

07

Study locations

1 site
  • Nilüfer Kablan
    Kadıköy, Istanbul 34000, Turkey (Türkiye)
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 30, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05595902
Lead sponsor
Istanbul Medeniyet University
Responsible party
Nilufer Kablan (PhD., Asisst. Prof., Istanbul Medeniyet University) — Principal investigator
First posted
Oct 27, 2022
Start date
Apr 1, 2023
Primary completion
May 1, 2024
Completion
Aug 1, 2025
Last update
Jul 30, 2026

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 Jul 2026. You cannot join it, but the record below documents what was studied.

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