Change in Shoe Size and Forefoot Morphological Parameters After Scarf + P1 Osteotomy for Hallux Valgus: a Prospective Study Using Surface 3D Scanning (POINTURE-HV)
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.
調査の概要
詳細な説明
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前:Younes KERROUMI, Clinical Research Physician
- 電話番号:+33144643384
- メール:ykerroumi@hopital-dcss.org
研究連絡先のバックアップ
- 名前:Meriem BAKHTI, Clinical Research Technician
- 電話番号:+33144641603
- メール:mbakhti@hopital-dcss.org
参加基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
説明
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
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:ヘルスサービス研究
- 割り当て:なし
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的: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:
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Change in Weight-Bearing 3D Surface Scan Shoe Size at 6 Months Postoperatively
時間枠: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
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Change in Self-Reported Shoe Size
時間枠: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
時間枠: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
時間枠: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
時間枠: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
|
協力者と研究者
捜査官
- 主任研究者:Antoine MOUTON、Diaconesses Croix Saint Simon Hospital Group
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
- ID RCB/ 2026-A00408-43
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
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