Femoral Component TKA: Extramedullary vs Conventional Intramedullary Guide (EMAX (L2055))
Positioning Femoral Component TKA Using an Extramedullary Guide: Comparison With Conventional Intramedullary Guide
The study wants to evaluate the performance of this EM guide in comparison to a traditional IM guide.
75 patients will be included in the extramedullary group (to be compared with a corresponding previous group of 75 patients treated with intramedullary guide).
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Detaillierte Beschreibung
Total Knee Arthroplasty (TKA) is a widely performed surgical procedure aimed at relieving pain and restoring function in patients with advanced knee arthritis. The success of TKA is contingent upon precise implant positioning, particularly in relation to the femoral component. The femoral component's alignment significantly influences postoperative knee biomechanics, patient satisfaction, and long-term implant survival.
Conventional methods for femoral component positioning involve the use of intramedullary (IM) guides, which are inserted into the femoral canal to align the cutting block for bone preparation. While IM guides offer precise alignment, they can also lead to complications such as intraoperative fractures, fat embolism, activation of coagulation and excessive blood loss.
To address these limitations, extramedullary (EM) guides have emerged as an alternative option. EM guides are placed on the external surface of the femur without entering the medullary canal and avoiding complications that may occur reaming the canal.
In the recent past years, kinematic alignment (KA) has become widespread in use as a new technique for TKR that considers the patient's individual alignment and biomechanics. By restoring the pre-arthritic kinematic axes of the femur and tibia, KA aims to mimic the natural knee joint's function and movement.
In this study a specific EM guide - Anterior Cortex Stylus - is used to address the alignment of the femoral component in the context of a KA approach. The guide uses the anterior cortex of the distal femur as reference for cutting block positioning. The study aims to evaluate the performance of this EM guide in comparison to a traditional IM guide (used in previous group of patients).
This is an open, multi-centre, retro-prospective, observational, controlled study.
The primary aim is to evaluate whether the Anterior Cortex Stylus (in a retro-prospective collected series) is not inferior to the traditional intramedullary guide (previous group of patients) in term of positioning of the femoral component in TKA.
A total of 75 patients will be included in the extramedullary group (to be compared with a corresponding previous group of 75 patients treated with intramedullary guide). Both groups will be treated with a total knee arthroplasty using GMK Sphere (CE marked, class III) and a kinematic alignment approach.
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Sara Zacchetti
- Telefonnummer: 0039 0283502227
- E-Mail: sara.zacchetti@grupposandonato.it
Studieren Sie die Kontaktsicherung
- Name: Laura Mangiavini
- Telefonnummer: 0039 0283502227
Studienorte
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Milan, Italien, 20148
- Abgeschlossen
- Istituto Clinico San Siro
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Milan, Italien, 20157
- Rekrutierung
- IRCCS Ospedale Galeazzi-Sant'Ambrogio [coordinator]
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Kontakt:
- Zacchetti
- Telefonnummer: 0039 0283502227
- E-Mail: sara.zacchetti@grupposandonato.it
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Torino, Italien, 10152
- Abgeschlossen
- Ospedale Cottolengo
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Probenahmeverfahren
Studienpopulation
The study shall include a total of 150 patients: 75 will be included in the extramedullary group, to be compared with a corresponding previous group of 75 patients treated with intramedullary guide. Patients meeting the inclusion criteria (mentioned below) will be recruited separately by each participating institution.
Patient enrolled in the retrospective analysis have been operated upon between January 2021 and September 2025.
Beschreibung
Inclusion Criteria:
- Male or female ≥ 18 years old
- Indication to primary TKA, for any diagnosis operated with EM or IM guides
- Signature of the informed consent (only for prospective cohort)
- Been operated upon between January 2021 and September 2025 (only for retrospective cohort)
Exclusion Criteria:
- Revision surgery of knee arthroplasty
- Patients with malignant diseases (at the time of surgery)
- Patients with proven or suspect infections (at the time of surgery)
- Pregnancy end/or lactating (auto declaration)
- Patient with known allergy to the specific metallic components of the prosthesis (at the time of surgery)
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Anzahl der Gruppen / Kohorten
Kohorten und Interventionen
Gruppe / KohorteGruppe / Kohorte |
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Extramedullary (EM) guides: Retroprospective + Prospective cohort
patients trated with extramedullary (EM) guides.
This cohort can be both Retroprospective and Prospective
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intramedullary (IM) guides: Retrospective cohort
patients trated with intramedullary (IM) guides.
This cohort will be only Retrospective
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
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Anterior Cortex Stylus
Zeitfenster: Radiographic angle at 3 moth post-op in the sagittal plane, between the anterior cortex of the distal femur and the femoral component and compare it in the group operated with Anterior Cortex Stylus versus the group operated with IM guide.
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Radiographic angle at 3 moth post-op of the femoral component in TKA in an Anterior Cortex Stylus (retro-prospective collected series) compared to intramedullary guide (previous group of patients)
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Radiographic angle at 3 moth post-op in the sagittal plane, between the anterior cortex of the distal femur and the femoral component and compare it in the group operated with Anterior Cortex Stylus versus the group operated with IM guide.
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Results across study centres
Zeitfenster: Compare the results in terms of radiographic sagittal angle between study centres at pre-op, surgery and 3 month post-op.
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Radiographic angles compared between the centres (at pre-op, surgery and 3 month post-op)
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Compare the results in terms of radiographic sagittal angle between study centres at pre-op, surgery and 3 month post-op.
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Adverse Events to determinate Instrument safety
Zeitfenster: During surgery
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Number of: adverse events, adverse device effects, serious adverse events and serious adverse device effects
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During surgery
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Hauptermittler: Corrado Sosio, Ospedale Galeazzi S.p.A.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- EMAX (L2055)
Plan für individuelle Teilnehmerdaten (IPD)
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Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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