G7 Dual Mobility System Used in Total Hip Arthroplasty for the Treatment of Femoral Neck Fracture

December 15, 2024 updated by: Zimmer Biomet

Retrospective and Prospective Multi-Center Outcomes Study of G7 Dual Mobility System Used in Total Hip Arthroplasty for the Treatment of Femoral Neck Fracture

This is a retrospective and prospective, multi-center, non-comparative, post market clinical follow-up study involving orthopedic surgeons skilled in THA and experienced implanting the devices included in this study.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The objectives of the study are to document the performance and safety of the G7 Dual Mobility System when used in primary total hip arthroplasty for the treatment of femoral neck fracture by analysis of standard scoring systems, radiographs, revision and adverse event records.The study will include a maximum of 15 centers and up to 300 implanted hips. Each center may enroll up to a maximum of 40 hips to permit the consistency of outcomes across a variety of investigators and clinical setting

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
275

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Korea, Republic of
      • Seoul, Korea, Republic of, 03080
        • Seoul National University Hospital
      • Seoul, Korea, Republic of, 06351
        • Samsung Medical Center
      • Seoul, Korea, Republic of, 05505
        • Asan Medical Centre
      • Seoul, Korea, Republic of, 04763
        • Hanyang University Medical Center
      • Seoul, Korea, Republic of, 06591
        • Seoul St. Mary's Hospital
      • Seoul, Korea, Republic of, 130-872
        • Kyunghee University Medical Center
      • Seoul, Korea, Republic of, 05505
        • Seoul National University Bundang Hospital

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

55 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Sampling Method

Probability Sample

Study Population

The study population will consist of patients who required primary THA for treatment of femoral neck fracture and satisfy eligibility criteria outlined in this section. In order to avoid potential selection bias, each investigator will offer study participation to each consecutive eligible patient presenting as a candidate for primary THA using G7 Dual Mobility System.

Description

Inclusion Criteria:

  • 55 to 80 years of age, inclusive
  • Skeletally mature
  • Have undergo treatment or in need of primary THA treatment of non-union, femoral neck fracture, unmanageable by other techniques
  • Have G7 Dual Mobility system implanted or decision to have a G7 Dual Mobility system implanted was made independently and prior to recruitment into study
  • Willing and able to complete scheduled follow-up evaluations as described in the study protocol
  • Has participated in the Informed Consent process and is willing and able to sign an IRB/EC approved informed consent

Exclusion Criteria:

  • Is septic, has an active infection or has osteomyelitis at the affected joint
  • Has significant osteoporosis as defined by treating surgeon
  • Has metabolic disorder(s) which may impair bone formation
  • Has osteomalacia
  • Has distant foci of infections which may spread to the implant site
  • Has rapid joint destruction, marked bone loss or bone resorption on pre-operative radiographs
  • Has vascular insufficiency, muscular atrophy at the implant site or neuromuscular disease which might jeopardize the outcome of the surgery
  • Has any concomitant disease which is likely to jeopardize the functioning or success of the implant
  • Is known to be pregnant
  • Is a prisoner, known alcohol or drug abuser or mentally incompetent or unable to understand what participation in this study entails
  • Has a known sensitively or allergy to one or more of

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

  • Observational Models: Other
  • Time Perspectives: Other

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
G7 G7 Acetabular System
All patients will receive G7 G7 Acetabular System
Device: G7 Acetabular System
All patients will receive G7 Acetabular System

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Implant dislocation rate
Time Frame: One year post-surgery
Dislocation is defined as the complete loss of articulation contact between two artificial joint components.
One year post-surgery

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Pain and Functional Performance by Oxford Hip Score
Time Frame: Up to 5 years post-surgery
The Oxford Hip score consist of 12 disease-specific questions measuring patient-reported pain and function of the hip joint. Responses to each question are formatted as a 5-point Likert scale, scored from 0 (the worst outcome/most symptoms) to 4 (the best outcome / least symptoms). The scores for each question are added together for a final result between 0 and 48.
Up to 5 years post-surgery
Implant survivorship by revision rates
Time Frame: Up to 5 years post-surgery
Cumulative survival rates using a Kaplan-Meier analysis.
Up to 5 years post-surgery
Quality of life by EQ-5D-5L questionnaire
Time Frame: Up to 5 years post-surgery
This 5-level EQ-5D version (EQ-5D-5L) consists of 2 pages: the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems. A 1-digit number expresses the level selected for that dimension. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state. The health states may be converted into a single index value where 1 represents full health and 0 represents death. The EQ VAS records the patient's self-rated health on a vertical visual analogue scale, where the endpoints are labelled 'The best health you can imagine' and 'The worst health you can imagine'.
Up to 5 years post-surgery
Quality of life by JHEQ
Time Frame: Up to 5 years post-surgery
The Japanese Orthopaedic Association hip disease evaluation questionnaire (JHEQ) is a self-administered questionnaire that evaluates the quality of life in patients with hip disease. The questionnaire consists of three subscales: pain (28 points), movement (28 points), and mental (28 points), with higher scores indicating a better outcome. This measurement is applicable to Japanese population only.
Up to 5 years post-surgery
Pain and Functional Performance by JOA Hip Score
Time Frame: Up to 5 years post-surgery
The Japanese Orthopaedic Association (JOA) hip score consists of four subcategories: pain (Pain, 40 points), range of motion (ROM, 20 points), ability to walk (Gait, 20 points), and activities of daily life (ADL, 20 points), with higher scores indicating a better outcome. This measurement is applicable to Japanese population only.
Up to 5 years post-surgery
Adverse events reported
Time Frame: Up to 5 years post-surgery
Summary of adverse events by category, incidence and frequency
Up to 5 years post-surgery

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Zimmer Biomet

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Kee-Hyung Rhyu, Kyunghee University Medical Center

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2020

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 4, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 21, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 24, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 25, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 15, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CSA2019-02H

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

Yes

product manufactured in and exported from the U.S.

Yes

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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