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Biomechanical Evaluation With Finite Element Models in Thumb Carpometacarpal Osteoarthitis: Prospective Comparative Analysis of Loads in Arthroplasty With or Without Implants

To better understand the load distribution in the Thumb Carpometacarpal Joint (CMC joint) in presence of osteoarthritis and how surgery by means of a suspension-resection arthroplasty or a joint replacement by means of a metal prosthesis affects this load distribution. These studies allow to supporting medical decisions and surgical treatments results with biomechanical evidence.The clinical management of the patients will be adapted to the treatment standards of the Orthopedic Surgery and Traumatology Service of the Hospital de la Santa Creu i Sant Pau, without the performance of this study influencing this process.

Studienübersicht

Detaillierte Beschreibung

For determine the normal kinematics of the thumb carpometacarpal (CMC) joint, Imaeda et al. (1994) examined in specimens four conditions which simulated normal function of the thumb: a) passive circumduction, b) active circumduction, c) static loading, and d) single-axis loading. Changes in normal kinematics predispose the CMC joint to osteoarthritis (OA). Previous studies used radiographic techniques that usually were static or measured the end range of motion.

For thumb CMC joint OA the prosthesis or total joint arthroplasty is one of the surgical option. Murai (2022) studied in ten healthy men with reconstruction 3D bone models the optimal center of rotation of the implant and found that the center of rotation change across various thumb positions. In the study by D´Agostino et al. (2018) a CT scan was used to quantify the 3D thumb kinematics in four female patients, before and after trapeziometacarpal joint replacement surgery with the Arpe implant. Thumb CMC joint OA led to a marked decrease of internal rotation and abduction of the first metacarpal during thumb flexion and a decrease of metacarpal adduction during thumb adduction. The abcense of first metacarpal translation in the ball-and-socket implant seems to indicate a decrease of first metacarpal adduction. Advanced thumb CMC joint OA mainly restrict the first metacarpal mobility. Whereas prosthesis is able to restore thumb function, it cannot fully replicate the kinematics of the healthy trapeziometacarpal joint.

This study will include 40 adults patients with chronic pain and carpometacarpal osteoarthritis that need surgical intervention. For the biomechanical evaluation, 3D modeling and finite element methods of evaluation of the CT scan before and after the surgical intervention in each patient will be performed with the computed specific software Epylisis and Ansys in Dimension Lab 3D, Hospital de la Santa Creu i Sant Pau by biomedical engineers.

The source of information is the journals and journals specialized in hand surgery, bioengineering, biotechnology and biomedical engineering.

The principal investigator and collaborators are responsible for creating the database and entering data. Statistical analysis requires support from the statistics unit of the UICEC/Hospital de la Santa Creu i Sant Pau. All data will be collected in REDCap.

Studientyp

Beobachtungs

Einschreibung (Geschätzt)

40

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Probenahmeverfahren

Wahrscheinlichkeitsstichprobe

Studienpopulation

Adult patients with chronic pain and thumb CMC joint osteoarthritis that need surgical treatment.

Beschreibung

Inclusion Criteria:

  • Primary Osteoarthritis in thumb CMC joint in the hand
  • Adults aged between 50 and 88 years old included.
  • Thumb CMC joint osteoarthritis, radiographic stages II, III and IV by Eaton- Littler classification (1973).

Exclusion Criteria:

  • Asymptomatic primary osteoarthritis in thumb CMC joint
  • Patients with osteoarthritis and age less than 50 years or more than 88 years.
  • Patients who have had previous interventions in the area, in this joint, injuries in this hand or fractures.
  • Patients with rheumatic diseases or collagen diseases that create joint instability.
  • Patients with physical or mental conditions that preclude intervention.
  • Thumb CMC joint osteoarthritis, radiographic stages I by Eaton-Littler classification (1973)

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
Chronic pain and Thumb carpometacarpal (CMC) osteoarthritis: Suspension-resection arthroplasty

This is a usual surgical treatment for patients with chronic pain and thumb CMC joint osteoarthritis. The clinical management of the patients will be adapted to the treatment standards of the Orthopedic Surgery and Traumatology Service of the Hospital de la Santa Creu i Sant Pau, without the performance of this study influencing this process.

Procedure performe with a suspension-resection arthroplasty by modified Welby´s technique. Dorso-lateral approach. Complete resection of the trapezium and joint stabilization with tendon interposition arthroplasty. After resection a distally based strip of the Abductor Pollicis Longus tendon is looped along the Flexor Carpi Radialis tendon. After surgical intervention the immobilization is one month with a plaster cast.

Carpometacarpal arthroplasty without implant: Trapezectomy and ligamentoplasty.
Andere Namen:
  • trapezium resection ligamentoplasty arthroplasty
Chronic pain and Thumb carpometacarpal (CMC) osteoarthritis: Trapeziometacarpal joint prosthesis

This is a usual surgical treatment for patients with chronic pain and thumb CMC joint osteoarthritis. The clinical management of the patients will be adapted to the treatment standards of the Orthopedic Surgery and Traumatology Service of the Hospital de la Santa Creu i Sant Pau, without the performance of this study influencing this process.

Procedure performe with a thumb CMC joint prosthesis. Dorso-lateral approach. Insertion of a dual mobility trapeziometacarpal joint prosthesis. The Prosthesis consists of a hemispherical cup, a modular neck and of an anatomical metacarpal stem. It offers a complete range of implants allowing the choice between single and double mobility. After surgical intervention the immobilization is one month with a plaster cast.

Joint carpometacarpal prostesis
Andere Namen:
  • Trapeziometacarpal arthroplasty with implant

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Thumb carpometarcarpal joint radiological evaluation
Zeitfenster: 12 months
Standard radiographs are required x-rays in posteroanterior (PA), PA in pronation (Robert´s view) and lateral views for assessment of the radiological stages of Eaton-Littler modified by Eaton-Glicker classification (1973). This classification include four stages of progression of the loss cartilage in thumb CMC joint, from I to IV. The X-rays will made in clinics at 6 weeks, 3 months, 6 months and 12 months after the surgical repair.
12 months
Thumb carpometacarpal joint CT scan evaluation
Zeitfenster: 12 months
A Computed Tomography (CT) scan is also required for the initial evaluation and regular control of these patients. For each participant, CT scans will be perform in static limb positions before and after the surgery.
12 months
3D modeling and finite element methods of evaluation of the CT scan before and after surgical intervention.
Zeitfenster: 12 months

In each patient will be performed with the computed specific software Epylisis and Ansys in Dimension Lab 3D, Hospital de la Santa Creu i Sant Pau by biomedical engineers.

To obtain the 3D geometrical information for a subject-specific finite element human hand, CT images will take from patients. Each scan is recontructed in a Digital Imaging and Communications in Medicine (DICOM) format. These 2D data (DICOM data collection) are process using medical image processing software Mimics (Materialise, Leuven, Belgium). All the CT images will be segmented manually into the bones and skin, while subcutaneous tissues and tendons will be reconstructed based on CT images.

A specific software (Epylisis, Ansys) will be used to simulated the loads in the thumb CMC joint. Epylisis is one of this specific software based on the Finite Element Methods (FEM), enables computational simulation of the biomechanical behavior of the trapeziometacarpal joint. It is used to conduct mechanistic analyses

12 months

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Pain pre and postoperative
Zeitfenster: 12 months
A Visual Analoge Scale (VAS) is used to assess pain (range, 0-10). This scale is from 0, no pain to 10, uncontrollable pain.
12 months
Pinch force pre and postoperative
Zeitfenster: 12 months
A pinch Jamar dynamometer is used to measure pinch force, scale from 0-30 Kilograms (Sammons Preston, Bolingbrook, IL, USA).
12 months
Grip Strength pre and postoperative
Zeitfenster: 12 months
A Jamar dynamometer is used to assess grip strength, scale from 0 to 90 Kilograms (Sammons Preston, Bolingbrook, IL, USA).
12 months
Range of motion
Zeitfenster: 12 months
A goniometer is used to assess the thumb CMC range of motion (flexion, extension, adduction, abduction), measure in grades from 0-90º.
12 months
Questionnaire QuickDash
Zeitfenster: 12 months
The clinical and functional outcomes is evaluate using the Questionnaire QuickDash, Disabilities of the Arm, Shoulder and Hand, consist of 30 items (11 items, scored 1-5). The QuickDASH score ranges from 0 (no disability) to 100 (most severe disability).
12 months

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

15. Juni 2026

Primärer Abschluss (Geschätzt)

25. November 2026

Studienabschluss (Geschätzt)

31. Dezember 2026

Studienanmeldedaten

Zuerst eingereicht

15. Mai 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

25. Mai 2026

Zuerst gepostet (Tatsächlich)

29. Mai 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

29. Mai 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

25. Mai 2026

Zuletzt verifiziert

1. Mai 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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