Prospective G7 Dual Mobility Total Hip PMCF

Active, not recruiting

• Conditions: Clinical Outcomes; Functional Outcomes; Safety; Radiological Outcomes; Survivorship

• Registration Number: NCT03308929
• Lead Sponsor: Zimmer Biomet

Brief Summary

This is a prospective multi-center clinical evaluation following recipients of the G7 Dual Mobility hip device. The primary objective is to characterize survivorship of the G7 hip at five years post-index procedure. Secondary objectives include documentation of clinical outcomes, safety and radiographic data.

Detailed Description

This multi-center prospective follow-up study will evaluate clinical outcomes, functional outcomes, radiological outcomes and further characterize the safety profile of the G7 Dual Mobility Hip Arthroplasty System. This will be accomplished by assessing these domains using the Harris Hip Score, UCLA Activity Score, and EQ-5D-3L, obtaining and assessing radiographs and the tracking of device or procedure related adverse events. Subjects will undergo unilateral primary or revision total hip arthroplasty and will then be followed for 10 years with intervals at 6 weeks, 1-, 2-, 3- 5- and 10 years. For the 10 year visit, subjects will not be required to present in their doctor's office, but will fill out a survey. Subsequent to 10 year data collection, the subject's participation in the study will be compete.

Study Timeline

• Study Start: 2017-02-28
• Study First Submitted: 2017-04-24
• Study First Submitted QC: 2017-10-06
• Study First Posted: 2017-10-13
• Status Verified: 2024-05
• Last Update Submitted: 2024-05-23
• Last Update Posted: 2024-05-24
• Primary Completion: 2027-07-01
• Study Completion: 2029-02-28

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 250

Inclusion Criteria

• Patients who are undergoing revision hip arthroplasty

  -OR

• Patients who are undergoing total hip arthroplasty (THA) for the correction of a functional deformity

  • OR

• Patients in need of treatment of femoral neck fracture, and trochanteric fractures of the proximal femur with head involvement, unmanageable by other techniques

  • OR

• Patients suffer from substantial pain and/or limited function, are appropriate for a primary total hip arthroplasty, considered at high risk for dislocation and have one of the following:

  • Non-inflammatory degenerative joint disease, including osteoarthritis and avascular necrosis
  • Rheumatoid arthritis

• Decision to have a G7 Dual Mobility system implanted was made independently and prior to recruitment into study

• From 18 to 80 years of age (inclusive) at time of procedure

• BMI equal to or less than 35

• Unilateral total hip replacement

• Willing and able to comply with the study procedures

Exclusion Criteria

• Patients undergoing total hip arthroplasty following non-union of previous surgically treated fracture.

• Infection, sepsis or osteomyelitis at the affected joint

• Significant osteoporosis as defined by treating surgeon

• Metabolic disorders which may impair bone formation

• Osteomalacia

• Distant foci of infections which may spread to the implant site

• Rapid joint destruction, marked bone loss or bone resorption on preoperative radiographs

• Underwent contralateral THA within 12 months of planned index procedure

• Contralateral THA planned within 12 months of index procedure

• Vascular insufficiency, muscular atrophy at the implant site or neuromuscular disease

• The patient is

  • A prisoner
  • A known alcohol or drug abuser

• The patient has any concomitant disease which is likely to jeopardize the functioning or success of the implant

• The patient is known to be pregnant

• The patient has a known sensitivity or allergy to one or more of the implanted materials, inducing but not limited to chromium, cobalt, and ceramic

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Survivorship of the study device	5 years	This is assessed by removal of the study device from the patient for any reason, including failure of the device, infection, or traumatic injury.

Secondary Outcome Measures

Name	Time	Method
Radiographic measurements of the implanted device	10 years	Standard AP radiographs of implanted hip will assess the positioning of the device as well as lucencies and other potential anomalies.
Patient Physical Activity	10 years	UCLA activity score - patient self assessment
Frequency and incidence of adverse events for all subjects with particular focus on those related or potentially related to the device	10 years	Assessed by tracking the type of adverse event, severity and relation of the event(s) to the study device
Patient Quality of Life	10 years	EQ-3L-5D quality of life measure - patient self assessment
Harris Hip Score	10 years	Harris Hip score measures pain, function, absence of deformity, and range of motion. Scores range from 0-100 with higher scores representing less dysfunction and better outcomes

Trial Locations

Locations (6)

Jersey City Medical Center; 🇺🇸 Jersey City, New Jersey, United States

New Mexico Orthopaedics; 🇺🇸 Albuquerque, New Mexico, United States

Tidewater Orthopaedics; 🇺🇸 Hampton, Virginia, United States

Ortho Virginia; 🇺🇸 Richmond, Virginia, United States

University of North Carolina; 🇺🇸 Chapel Hill, North Carolina, United States

Oregon Health and Science University; 🇺🇸 Portland, Oregon, United States