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

4. november 2026 oppdatert av: 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.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert 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.

Studietype

Intervensjonell

Registrering (Antatt)

54

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studer Kontakt Backup

Studiesteder

      • Kütahya, Tyrkia (Türkiye)
        • Rekruttering
        • Kutahya Health Science University
        • Ta kontakt med:
        • Hovedetterforsker:
          • Emrah Afsar, Phd
        • Underetterforsker:
          • Zeynep Sena Namaz, MSc

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 35 år (Voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Intervensjonsmodell: Enkeltgruppeoppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: 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.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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
Tiltaksbeskrivelse
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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Etterforskere

  • Hovedetterforsker: Emrah Afsar, Phd, Kutahya Health Science University

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

26. oktober 2026

Primær fullføring (Antatt)

26. oktober 2027

Studiet fullført (Antatt)

26. desember 2027

Datoer for studieregistrering

Først innsendt

19. oktober 2026

Først innsendt som oppfylte QC-kriteriene

19. oktober 2026

Først lagt ut (Faktiske)

26. oktober 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

5. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

4. november 2026

Sist bekreftet

1. november 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

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

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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