Clinical Study With the seleXys PC and the RM Pressfit Vitamys Cup

February 18, 2025 updated by: University Hospital, Basel, Switzerland

A Randomized Controlled Trial With the seleXys PC Cup and RM Pressfit Vitamys Cup in Combination With the Optimys Short Stem

This is a randomized controlled trial with the seleXys PC cup and RM Pressfit vitamys cup in combination with the optimys short stem. Wear rate and migration is assessed with roentgen stereophotogrammetric analysis (RSA) measurements.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

53

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
    • BL
      • Basel, BL, Switzerland, 4031
        • Klinik für Orthopädie und Traumatologie, University Hospital Basel

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

50 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients with symptomatic arthritis who are candidates for a primary total hip arthroplasty with an uncemented femoral stem as determined jointly by the surgeon and the patient.
  • Patients suitable for an uncemented acetabular component in combination with a 36mm femoral head (seleXys PC cup: 52mm, 54mm or 56mm; RM Pressfit vitamys: 52mm, 54mm or 56mm)
  • Patients between the ages of 50 and 75 inclusive
  • Patients who understand the conditions of the study and are willing to participate for the length of the prescribed follow-up

Exclusion Criteria:

  • Patients that require an acetabular cup size which cannot be used in combination with a 36mm femoral head
  • Patients that offer no guarantee for regular follow-up controls
  • Patients that have a revision surgery
  • Patients that have a fracture of the femoral neck or a bone tumour in the area of the femur or pelvis
  • Patients that had a previous osteotomy of the femur or pelvis
  • Pregnant women or those seeking to become pregnant
  • Patients with a history of active infection

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: seleXys PC
seleXys PC cup combined with the optimys stem
Device: seleXys PC
Total hip arthroplasty using the seleXys PC cup
Active Comparator: RM
RM Pressfit vitamys cup combined with the optimys stem
Device: RM
Total hip arthroplasty using the RM cup

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Wear Rate
Time Frame: 3 years
The principal purpose of this study is to compare the modular seleXys PC Cup with a vitamys inlay to the monoblock RM Pressfit vitamys cup by means of wear rate. In addition, the migration of the two cups and the optimys stem, respectively, will be evaluated.
3 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Basel, Switzerland

Investigators

  • Principal Investigator: Karl Stoffel, Prof. Dr. med., Klinik für Orthopädie und Traumatologie, Universitätsspital Basel

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 30, 2017

Primary Completion (Estimated)

August 1, 2025

Study Completion (Estimated)

August 1, 2025

Study Registration Dates

First Submitted

August 22, 2017

First Submitted That Met QC Criteria

August 22, 2017

First Posted (Actual)

August 24, 2017

Study Record Updates

Last Update Posted (Actual)

March 25, 2025

Last Update Submitted That Met QC Criteria

February 18, 2025

Last Verified

February 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2017-00832; mu21Stoffel

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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