Change in Shoe Size and Forefoot Morphological Parameters After Scarf + P1 Osteotomy for Hallux Valgus: a Prospective Study Using Surface 3D Scanning (POINTURE-HV)
24. august 2026 opdateret af: Groupe Hospitalier Diaconesses Croix Saint-Simon
Changes in Shoe Size and Forefoot Morphological Parameters After Scarf + P1 Osteotomy for Hallux Valgus: A Prospective Study Using Surface 3D Scanning
Background and Rationale:
Surgical correction of Hallux Valgus via Scarf and P1 osteotomy aims to realign the first ray, modifying overall forefoot morphology. While radiological correction is well established, a discrepancy often exists between objective foot measurements and patient-perceived postoperative shoe fitting. Weight-bearing 3D surface scanning provides a non-irradiating, precise method to evaluate volumetric and dimensional changes without the biases of traditional foot-measuring gauges.
Objective and Hypothesis:
The primary objective is to measure changes in shoe size (in French/Paris points) using weight-bearing 3D surface scanning between baseline and 6 months postoperatively. The study hypothesis is that Scarf + P1 osteotomy induces a shoe size reduction of at least 0.5 Paris points at 6 months, correlated with forefoot width reduction, M1 shortening, and angular correction (HVA and M1-M2 angles).
Study Design:
Prospective, single-center, non-comparative interventional study with minimal risks and constraints (RIPH 2) involving 100 participants.
Studieoversigt
Status
Ikke rekrutterer endnu
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Study Procedures and Follow-up Schedule: Preoperative Assessment: Clinical evaluation, standing plain radiographs (HVA and M1-M2 angles), baseline self-reported shoe size, foot-measuring device measurement, and weight-bearing 3D surface scan.
Surgical Intervention: Hallux valgus correction via Scarf osteotomy of the first metatarsal combined with P1 phalanx osteotomy.
Postoperative Follow-up Visits: 6-Week Visit: Routine clinical evaluation, 3D surface scan, foot-measuring device measurement, and self-reported shoe size assessment.
6-Month Visit: Final follow-up visit including standing radiographs, 3D surface scan, foot-measuring device measurement, self-reported shoe size assessment, and recording of surgical/mechanical complications.
Undersøgelsestype
Interventionel
Tilmelding (Anslået)
100
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiekontakt
- Navn: Younes KERROUMI, Clinical Research Physician
- Telefonnummer: +33144643384
- E-mail: ykerroumi@hopital-dcss.org
Undersøgelse Kontakt Backup
- Navn: Meriem BAKHTI, Clinical Research Technician
- Telefonnummer: +33144641603
- E-mail: mbakhti@hopital-dcss.org
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
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Ingen
Beskrivelse
Inclusion Criteria:
- Patient informed about the study and signed written consent obtained in duplicate
- Male or female participant aged 18 years or older
- Symptomatic hallux valgus without lateral ray involvement, requiring surgical correction by Scarf + P1 osteotomy
- Primary surgery planned for the affected foot
- Ability to understand study information, complete questionnaires, and comply with follow-up visits (6 weeks and 6 months)
Exclusion Criteria:
- Previous bony surgery of the first ray or forefoot on the affected side (osteotomy, arthrodesis)
- Surgical indication on lateral rays (claw toes, Weil osteotomy)
- Severe lower-limb neurological or vascular disease altering gait or foot morphology (Charcot foot, critical limb ischemia, severe neuropathy)
- Active inflammatory rheumatic disease (e.g., rheumatoid arthritis) with polyarticular foot involvement
- Complex foot deformity requiring primary first metatarsophalangeal (MTP1) arthrodesis or procedure other than Scarf + P1 osteotomy
- Pregnant or breastfeeding woman
- Person under legal guardianship or unable to provide free and informed consent
- Person deprived of liberty by judicial or administrative decision
- Concurrent participation in another research study that could interfere with study endpoints
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Sundhedstjenesteforskning
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Eksperimentel: Hallux valgus
patients consulting for hallux valgus
|
A prospective, non-comparative, single-center interventional study involving human subjects and entailing minimal risk and burden (RIPH2). The interventions introduced by the research consist of:
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in Weight-Bearing 3D Surface Scan Shoe Size at 6 Months Postoperatively
Tidsramme: Baseline (preoperative) and 6 months postoperatively
|
Mean change in shoe size (expressed in French size points / Paris points) measured objectively using a weight-bearing 3D surface scanner between baseline (preoperative) and 6 months postoperatively.
The proportion of patients experiencing a clinically significant shoe size reduction of at least 0.5 Paris points will also be assessed.
|
Baseline (preoperative) and 6 months postoperatively
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in Self-Reported Shoe Size
Tidsramme: Baseline (preoperative) and 6 months postoperatively
|
Difference between the patient's self-reported shoe size at 6 months postoperatively compared to baseline (measured in Paris points).
|
Baseline (preoperative) and 6 months postoperatively
|
|
Correlation Coefficient Between Radiographic and 3D Surface Scanner Angular Measurements
Tidsramme: Baseline (preoperative) and 6 months postoperatively
|
Correlation coefficient evaluating the agreement between Hallux Valgus Angle (HVA) and Intermetatarsal Angle (M1-M2) measured on standing plain radiographs versus 3D surface scan reconstructions.
|
Baseline (preoperative) and 6 months postoperatively
|
|
Incidence of Surgical Complications
Tidsramme: Through 6 months postoperatively
|
Proportion of patients experiencing early or late postoperative complications, including deformity recurrence, hallux varus hypercorrection, transfer metatarsalgia, hardware intolerance/failure, delayed wound healing, surgical site infection, or dorsal collateral nerve sensory disorders.
|
Through 6 months postoperatively
|
|
Forefoot Morphometric Changes Measured by 3D Surface Scanner
Tidsramme: Baseline (preoperative), 6 weeks, and 6 months postoperatively
|
Changes in forefoot width (in mm), metatarsal perimeter (in mm), and global forefoot volume (in cm3) measured during weight-bearing 3D surface scanning.
|
Baseline (preoperative), 6 weeks, and 6 months postoperatively
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Ledende efterforsker: Antoine MOUTON, Diaconesses Croix Saint Simon Hospital Group
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 (Anslået)
20. september 2026
Primær færdiggørelse (Anslået)
20. september 2027
Studieafslutning (Anslået)
31. december 2027
Datoer for studieregistrering
Først indsendt
5. august 2026
Først indsendt, der opfyldte QC-kriterier
5. august 2026
Først opslået (Faktiske)
10. august 2026
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
26. august 2026
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
24. august 2026
Sidst verificeret
1. august 2026
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- ID RCB/ 2026-A00408-43
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