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
状態
状態
条件
条件
介入・治療
介入・治療
詳細な説明
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- 適用できない
連絡先と場所
研究連絡先
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
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)
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・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
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
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
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)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
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
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
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?
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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