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Effects of Custom 3D Printed Insoles and Short Foot Exercises in Pes Planus

4. november 2026 opdateret af: Emrah Afsar, Kutahya Health Sciences University

The Effect of Custom 3D Printed Insoles and Short Foot Exercises on Foot Posture, Balance, and Gait Parameters in Individuals With Pes Planus

The primary purpose of this study is to evaluate the effects of combining custom 3D-printed medial arch-supported insoles with short foot exercises on foot posture, balance, and gait parameters in individuals with pes planus (flat feet). Furthermore, the study will investigate the impact of this combined intervention on secondary outcomes, including pain levels, health-related quality of life, and functional exercise capacity measured by the 6-Minute Walk Test.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Participants will be recruited through personal networks and social media platforms using a snowball sampling method. Potential candidates will be screened for pes planus in accordance with established literature protocols, utilizing the Foot Posture Index-6 (FPI-6) and the Navicular Drop Test.

Eligible individuals who meet the criteria for pes planus will undergo 3D foot scanning. Based on the obtained data, customized medial arch-supported insoles will be manufactured using 3D printing technology. Participants will be instructed to use these custom insoles in their daily lives for a total of 8 weeks. Concurrently, they will be assigned a daily short foot exercise (intrinsic muscle training) program. Each exercise repetition will involve a 5-second hold, and the entire protocol will be maintained for 8 weeks.

All clinical, functional, and biomechanical evaluations-including foot posture, dynamic balance, comprehensive gait and plantar pressure analysis (via the Zebris system), pain intensity, quality of life, and functional walking capacity-will be conducted at two time points: at baseline and at the end of the 8-week intervention period.

For statistical analysis, depending on the normality of data distribution, either a paired t-test or a Wilcoxon signed-rank test will be used to evaluate within-group changes between baseline and week 8. To determine the magnitude of the intervention effect, Cohen's d effect sizes for dependent measures will be calculated and reported alongside 95% confidence intervals.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

54

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

      • Kütahya, Tyrkiet (Türkiye)
        • Rekruttering
        • Kutahya Health Science University
        • Kontakt:
        • Ledende efterforsker:
          • Emrah Afsar, Phd
        • Underforsker:
          • Zeynep Sena Namaz, MSc

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 35 år (Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Aged between 18 and 35 years.
  • Presence of pes planus, defined as a Navicular Drop test value > 10 mm and a Foot Posture Index-6 (FPI-6) score between +6 and +12.
  • Willingness to volunteer for the study and provide written informed consent.

Exclusion Criteria:

  • Presence of rigid pes planus.
  • Hallux valgus.
  • Hallux rigidus.
  • Calcaneal spur (heel spur).
  • History of any neurological, cardiovascular, or systemic diseases.
  • History of any orthopedic disease affecting the lower extremities.
  • History of lower extremity surgery.
  • Body Mass Index (BMI) ≥ 30 kg/m².

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Insole and Exercise Group

All participants in this group will receive custom 3D printed insoles and perform a short foot exercise program.

The intervention consists of a combined biomechanical and active rehabilitation approach for individuals with pes planus:

  1. Custom 3D Printed Insoles: The participants' feet will be 3D scanned, and custom insoles will be manufactured using 3D printing technology. Participants will be recommended to use these personalized insoles during their daily activities for a total of 8 weeks.
  2. Short Foot Exercises (SFE): Participants will perform a short foot exercise (foot core / intrinsic muscle) program aimed at increasing intrinsic foot muscle activation. The exercise protocol will be performed daily for 8 weeks, with each repetition held for five seconds.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Foot Posture Index-6 (FPI-6)
Tidsramme: Baseline and 8 Weeks

Assesses foot posture across 6 criteria. Total scores range from -12 (highly supinated) to +12 (highly pronated).

Baseline and 8 Weeks
Navicular Drop Test (NDT)
Tidsramme: Baseline and 8 Weeks

Assesses medial longitudinal arch height difference (in mm) between seated (non-weight bearing) and standing (weight bearing) positions. Higher values indicate increased pronation.

Baseline and 8 Weeks
Modified Star Excursion Balance Test (MSEBT)
Tidsramme: Baseline and 8 Weeks

Evaluates dynamic balance by measuring the maximum reach distance (in cm) in three directions: anterior, posteromedial, and posterolateral.

Baseline and 8 Weeks
Spatiotemporal Gait and Plantar Pressure Parameters
Tidsramme: Baseline and 8 Weeks

Evaluated using the Zebris system. Includes gait speed (m/s), cadence (steps/min), stride length (cm), stance percentage (%), and plantar pressure parameters (e.g., peak pressure, contact area).

Baseline and 8 Weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Numeric Pain Rating Scale (NPRS)
Tidsramme: Baseline and 8 Weeks

Assesses pain intensity on an 11-point scale ranging from 0 (no pain) to 10 (worst imaginable pain).

Baseline and 8 Weeks
36-Item Short Form Health Survey (SF-36)
Tidsramme: Baseline and 8 Weeks

Assesses health-related quality of life across 8 domains. Subscale scores are transformed to a 0 to 100 scale, where higher scores indicate better health status.

Baseline and 8 Weeks
6-Minute Walk Test (6MWT) and Modified Borg Scale
Tidsramme: Baseline and 8 Weeks

Evaluates functional capacity by measuring the total distance walked in 6 minutes (in meters). Perceived exertion is assessed before and after the test using the Modified Borg Scale (0-10 scale; higher scores indicate greater exertion).

Baseline and 8 Weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Emrah Afsar, Phd, Kutahya Health Science University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

26. oktober 2026

Primær færdiggørelse (Anslået)

26. oktober 2027

Studieafslutning (Anslået)

26. december 2027

Datoer for studieregistrering

Først indsendt

19. oktober 2026

Først indsendt, der opfyldte QC-kriterier

19. oktober 2026

Først opslået (Faktiske)

26. oktober 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

4. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 3D Insole in Pes Planus
  • TDK-2026-365 (Andet bevillings-/finansieringsnummer: Kutahya Health Sciences University Scientific Research Projects Unit)

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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