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ROBODOC® Clinical Trials: Long-Term Follow-Up

14. November 2016 aktualisiert von: Curexo Technology Corporation

A Follow-Up Study of Subjects Enrolled in the Pin-Based (IDE G920035) and Pinless (IDE G000071) ROBODOC® Surgical System Clinical Trial

This is a follow-up study looking at the and long-term results of two methods of preparing the thigh bone to receive an implant during hip replacement surgery. For one group of patients in the original study, the surgeon used a cutting tool called a broach and a special hammer on patients who had standard hip replacement operations. For the other patients, the surgeon used a surgical robot which was equipped with a cutting tool, like a drill, to prepare the thigh bone. The purpose of this study is to collect additional information confirming that the surgical robot is safe and effective when used as recommended. Only patients who were enrolled in the original clinical trials are eligible for this study.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Detaillierte Beschreibung

A. Description This study is a follow-up study looking at mid- and long-term outcomes for participants in the IDE G920035 and IDE G000071 Clinical Trials. The IDE G920035 was a randomized, controlled trial with a 1:1 ROBODOC:control randomization. The IDE G000071 was a randomized, controlled trial with a 3:1 ROBODOC:control randomization.

B. Selection Criteria Only subjects who were originally enrolled in the IDE G920035 and IDE G000071 Clinical Trials are eligible to participate in this study. Subjects selected for this study will have completed a minimum of the 3 month follow-up requirements of the IDE G920035 and IDE G000071 Clinical Trials. Enrolled subjects must be willing to give a relevant medical history, undergo a focused physical examination of their operative hip(s), have an AP and lateral x-ray taken of their operative hip(s) and complete the Harris Hip Score, SF-12, UCLA Activity Score, VAS pain self-assessment, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaires.

The study subject may be reimbursed for reasonable travel expenses associated with their participation in the study. All requests for reimbursement must be pre-approved by Curexo Technology Corporation.

C. Data Collection Subjects participating in this study will be asked to visit the study site to undergo a physical examination of their operative hip(s). During this visit, they will be asked to give a relevant medical history, have AP and lateral radiographs taken of their operative hip(s), and complete the Harris Hip Score, SF-12, UCLA Activity Score, VAS pain self-assessment, and WOMAC questionnaires.

If the subject has obtained AP and lateral radiographs within the last year, these can be used instead of requiring them to obtain new radiographs specifically for this study.

If the subject is unable or unwilling to come in for the examination, they will be asked to fill out the Harris Hip Score, SF-12, UCLA Activity Score, VAS pain self-assessment, and WOMAC questionnaires via mail or over the phone with the Study Nurse/Coordinator. Additionally, they will be asked to obtain current AP and lateral radiographs taken of their operative hip(s) with their current orthopaedic surgeon to be transferred to the study site.

D. Blinding An independent radiologist or orthopaedic surgeon, experienced in reading hip x-rays, who is blinded to the original randomly assigned study group, will read the follow-up x-rays taken on subjects enrolled in this study.

E. Randomization There will be no further randomization of subjects in this study. Prior subject records will determine the original study group (ROBODOC or manual control) to which the subject was randomly assigned in IDE G920035 or IDE G000071.

F. Baseline Measurements No baseline measurements will be collected for this follow-up study. G. Power and Sample Size The sample size will be determined by the number of qualifying subjects from the IDE G920035 and IDE G000071 Clinical Trials who can be located and who agree to participate in this follow-up study. We anticipate approximately 20 patients from IDE G920035 and 30 patients from IDE G000071 to agree to study participation. This sample size will provide 82% power (α = 0.05, 2-tailed) to detect a 20% (5 versus 2.5, pooled SD = 3.0) difference between the ROBODOC and control groups on the VAS at the last available follow-up.

Studientyp

Beobachtungs

Einschreibung (Tatsächlich)

118

Kontakte und Standorte

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

Studienorte

    • California
      • Sacramento, California, Vereinigte Staaten, 95816
        • Sutter Institute for Medical Research

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

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Probenahmeverfahren

Nicht-Wahrscheinlichkeitsprobe

Studienpopulation

Subjects included in this study will have been enrolled in either the IDE G920035 or the IDE G000071 Clinical Trial and will have completed the follow-up requirements to those trials.

Beschreibung

Inclusion Criteria:

  • Subjects included in this study will have completed the follow-up requirements of the IDE G920035 or the IDE G000071 Clinical Trial;
  • Subjects must be willing to give a relevant medical history, undergo a focused physical examination of their operative hip(s) and have an AP and lateral x-ray taken of their operative hip(s);
  • Subjects must be willing to complete the Harris Hip Score, SF-12, WOMAC, UCLA Activity Score, and VAS pain self-assessment questionnaires; and
  • Subjects must be willing to sign an informed consent document.

Exclusion Criteria:

  • There are no exclusion criteria.

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
ROBODOC
The ROBODOC group received total hip arthroplasty using the ROBODOC Surgical system for preparation of the femoral canal for a femoral stem implant.
Conventional
The conventional group received total hip arthroplasty using the conventional manual tools including a broach to prepare the femoral cavity for femoral stem replacement.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Presence of Osteolysis
Zeitfenster: 14 months
Presence of osteolysis determined by looking at patient x-rays as described by Gruen et al and Johnson et al.
14 months
Western Ontario and McMaster Universities Osteoarthritis Index
Zeitfenster: 2 months
The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) will be used to measure clinical outcome. The WOMAC total score ranges 96 (best) to 0 (worst). The WOMAC pain score ranges 0-20, the stiffness score ranges 0-8, and functional limitation score ranges 0-68.
2 months

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Harris Hip Score
Zeitfenster: 2 months
The Harris Hip Score will be measured to determine clinical outcome. The Harris Hip total score ranges 100 (best) to 0 (worst) and it is computed by the sum of the pain score (0-44 points), function (, 0-47 points), absence of deformity (4 points), and range of motion (5 points).
2 months
Health Status Questionnaire-12
Zeitfenster: 2 months
The Health Status Questionnaire-12 (HSQ-12) will be used to measure clinical outcome. HSQ-12 total score ranges from 0 (worst) to 800 (best).
2 months
UCLA Activity Score
Zeitfenster: 2 months
The UCLA Activity Score will be used to measure clinical outcome. The UCLA Activity Score ranges 10 (best) to 0 (worst).
2 months
Visual Analog Pain Score
Zeitfenster: 2 months
The Visual Analog Scale pain questionnaire will be used to measure clinical outcome. The pain VAS is a continuous scale which range from 0 (no pain) to 100 [100-mm scale] ("worst imaginable pain" ).
2 months

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Number of Operated Hips That Required Revision/Reoperation
Zeitfenster: At follow-up visit (7-20 years post-operatively)
Implant survivorship will be determined from the medical history CRF by comparing the percentage of ROBODOC and manual control subjects who have required revision or re-operation THA procedures on the hip in question since their original study procedure which took place 7-20 years previously.
At follow-up visit (7-20 years post-operatively)

Mitarbeiter und Ermittler

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

Sponsor

Ermittler

  • Hauptermittler: William L Bargar, MD, Department of Orthopaedics, University of California at Davis

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.

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

1. April 2013

Primärer Abschluss (Tatsächlich)

1. Januar 2016

Studienabschluss (Tatsächlich)

1. Januar 2016

Studienanmeldedaten

Zuerst eingereicht

9. April 2013

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

12. April 2013

Zuerst gepostet (Schätzen)

15. April 2013

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Schätzen)

11. Januar 2017

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

14. November 2016

Zuletzt verifiziert

1. November 2016

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 12-PROTO-01

Plan für individuelle Teilnehmerdaten (IPD)

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UNENTSCHIEDEN

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