Questa pagina è stata tradotta automaticamente e l'accuratezza della traduzione non è garantita. Si prega di fare riferimento al Versione inglese per un testo di partenza.

AI-Based Video Assessment of Anterior Knee Laxity (AI-LAX)

17 settembre 2026 aggiornato da: Jacopo Conteduca, ASL Lecce

Artificial Intelligence-Based Video Assessment of Anterior Knee Laxity Compared With Rolimeter in Patients With Anterior Cruciate Ligament Injury: A Prospective Validation Study

This prospective observational validation study aims to evaluate the accuracy and reliability of artificial intelligence-based video analysis for quantifying anterior knee laxity. Participants with unilateral anterior cruciate ligament (ACL) injury and ACL-intact controls will undergo bilateral knee examination using a Rolimeter by two independent orthopedic surgeons. Three consecutive measurements will be obtained for each knee and examiner. Each examination maneuver will be video recorded using a standardized acquisition protocol including a metric reference of known dimensions.

The videos will subsequently be analyzed independently by a multimodal artificial intelligence system blinded to clinical diagnosis, MRI findings, injured side, examiner measurements, and contralateral knee measurements. AI-derived anterior tibial translation and side-to-side difference will be compared with Rolimeter measurements. The primary objective is to assess agreement between AI-derived and Rolimeter-derived side-to-side difference. Secondary objectives include inter-examiner reliability, AI repeatability and the diagnostic accuracy of AI-derived measurements for identifying ACL injury.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Descrizione dettagliata

Each examiner will perform three consecutive Rolimeter measurements on both knees. Individual maneuvers will be video recorded so that the Rolimeter and AI measurements refer to the same mechanical examination. Videos will be pseudonymized and analyzed independently. The AI system will have no access to participant group allocation, MRI findings, injured side, Rolimeter measurements, or results from other videos belonging to the same participant.

A standardized metric reference positioned in the plane of the examined knee will be visible in each recording to permit estimation of displacement in millimeters. AI measurements will not be used for clinical decision-making.

Tipo di studio

Osservativo

Iscrizione (Stimato)

70

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

      • Lecce, Italia, 73100
        • Ospedale Vito Fazzi
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 16 anni a 55 anni (Bambino, Adulto)

Accetta volontari sani

Sì

Sessi ammissibili allo studio

Tutto

Metodo di campionamento

Campione non probabilistico

Popolazione di studio

Adults undergoing prospective bilateral assessment of anterior knee laxity at a single orthopedic center. The study population will include two cohorts: participants with a unilateral, complete anterior cruciate ligament (ACL) injury confirmed by magnetic resonance imaging and ACL-intact control participants without clinical evidence or history of ACL injury.

All participants will undergo the same standardized bilateral knee examination using an arthrometer performed independently by two orthopedic examiners. Each examination maneuver will be video recorded for subsequent blinded AI-based assessment of anterior tibial translation.

Descrizione

Inclusion Criteria:

  • General inclusion criteria
  • Age ≥16 years.
  • Ability to understand the study procedures and provide written informed consent.
  • Ability to undergo bilateral clinical assessment of anterior knee laxity.

ACL-Deficient Group

  • Unilateral complete anterior cruciate ligament (ACL) injury confirmed by magnetic resonance imaging (MRI).
  • Clinical evidence of anterior knee instability compatible with ACL deficiency.
  • Contralateral knee without known ACL injury or previous ACL reconstruction.
  • ACL-Intact Control Group
  • No history of ACL injury or ACL reconstruction in either knee.
  • No clinical evidence of anterior knee instability.
  • Negative clinical assessment for ACL deficiency in both knees.

Exclusion Criteria

  • Previous ACL reconstruction or other major ligament reconstruction of either knee.
  • Bilateral ACL injury.
  • Revision ACL injury or previous ACL surgery.
  • Concomitant complete injury of another major knee ligament requiring surgical treatment.
  • Previous major knee surgery that could affect anterior tibial translation.
  • Moderate-to-severe knee osteoarthritis or radiographic osteoarthritis greater than Kellgren-Lawrence grade 1.
  • Acute fracture involving the examined lower limb.
  • Neurological, neuromuscular, or other conditions that could interfere with standardized knee examination.
  • Inability to tolerate or complete the standardized arthrometer examination.
  • Inability or unwillingness to provide informed consent or consent for study video recording.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Modelli osservazionali: COHORT
  • Prospettive temporali: PROSPECTIVE

Coorti e interventi

Gruppo / Coorte
ACL-deficient participants

Adults with a unilateral, complete anterior cruciate ligament (ACL) injury confirmed by magnetic resonance imaging (MRI). Participants will undergo bilateral anterior knee laxity assessment using a Rolimeter by two independent orthopedic examiners. Three consecutive measurements will be obtained for each knee and examiner, and each examination maneuver will be video recorded for subsequent blinded AI-based analysis. The contralateral knee will serve as the within-subject reference for calculation of the side-to-side difference.

ACL-Intact Control Group

Adults without a history or clinical evidence of ACL injury or knee instability. Participants will undergo the same standardized bilateral anterior knee laxity assessment performed by two independent orthopedic examiners using a Rolimeter, with three consecutive measurements for each knee and examiner. Each examination maneuver will be video recorded and subsequently analyzed by the AI system using the same protocol applied to the ACL-deficient cohort.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Agreement Between AI-Derived and Arthrometer-Derived Side-to-Side Difference in Anterior Tibial Translation
Lasso di tempo: Day 1 (index study examination)

Agreement between the side-to-side difference (SSD, mm) in anterior tibial translation estimated by artificial intelligence from standardized knee examination videos and the corresponding SSD obtained with an arthrometer. Agreement will be assessed using intraclass correlation coefficient (ICC, absolute agreement) and Bland-Altman analysis, including mean bias and 95% limits of agreement.

Day 1 (index study examination)

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Measurement Error of AI-Derived Anterior Tibial Translation Compared With Arthrometer Measurements
Lasso di tempo: Day 1 (index study examination)

The difference between AI-derived and arthrometer-derived measurements of anterior tibial translation will be quantified in millimeters using mean absolute error (MAE), root mean square error (RMSE), mean bias, and 95% limits of agreement.

Day 1 (index study examination)
Inter-Examiner Reliability of Arthrometer Measurements
Lasso di tempo: Day 1 (index study examination)

Reliability of anterior tibial translation and side-to-side difference measurements obtained independently by two orthopedic examiners using an arthrometer. Inter-examiner reliability will be assessed using intraclass correlation coefficients with 95% confidence intervals and Bland-Altman analysis.

Day 1 (index study examination)
Agreement Between AI Measurements Derived From Examinations Performed by Different Examiners
Lasso di tempo: Day 1 (index study examination)

Agreement between AI-derived anterior tibial translation and side-to-side difference obtained from videos of knee examinations performed independently by the two examiners. This outcome will assess the robustness of AI-derived measurements with respect to examiner-related variability.

Day 1 (index study examination)
Diagnostic Accuracy of AI-Derived Side-to-Side Difference for ACL Injury
Lasso di tempo: Day 1 (index study examination)

The ability of AI-derived side-to-side difference to discriminate participants with complete anterior cruciate ligament injury from ACL-intact controls will be assessed using receiver operating characteristic (ROC) curve analysis. Area under the curve (AUC), sensitivity, specificity, positive predictive value, and negative predictive value will be calculated.

Day 1 (index study examination)
diagnostic Accuracy of Arthrometer-Derived Side-to-Side Difference for ACL Injury
Lasso di tempo: Day 1 (index study examination)

The diagnostic performance of arthrometer-derived side-to-side difference for identifying complete anterior cruciate ligament injury will be evaluated using ROC curve analysis, including AUC, sensitivity, specificity, positive predictive value, and negative predictive value.

Day 1 (index study examination)

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

15 settembre 2026

Completamento primario (Stimato)

31 dicembre 2026

Completamento dello studio (Stimato)

31 dicembre 2026

Date di iscrizione allo studio

Primo inviato

12 settembre 2026

Primo inviato che soddisfa i criteri di controllo qualità

17 settembre 2026

Primo Inserito (Effettivo)

22 settembre 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

22 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

17 settembre 2026

Ultimo verificato

1 settembre 2026

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Altri numeri di identificazione dello studio

  • ASLLECCE-AILAX-2026-01

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano IPD

De-identified data may be made available from the corresponding author upon reasonable request, subject to institutional and ethical approval.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .