G7 Freedom Constrained Vivacit-E Liners

N/AEnrolling By InvitationNCT05587244

Zimmer Biomet202 enrolled

Overview

The main objectives of this study are to confirm the long-term safety, performance, and clinical benefits of the G7 Freedom Constrained Vivacit-E Acetabular Liners in primary and revision total hip arthroplasty. The primary endpoint is defined by the survival of the implant system at 10 years, which is based on removal of the study device and will be determined using the Kaplan-Meier method. The safety of the system will be assessed by monitoring the frequency and incidence of adverse events. Relation of the events to the implant, instrumentation and/or procedure should be specified. The secondary endpoints are the assessment of performance and clinical benefits by recording patient-reported clinical outcomes measures (PROMs) as well as radiographic outcomes (if available). The G7 Vivacit-E Freedom Constrained Liner is indicated for use (per IFU) as a component of a total hip prosthesis in primary and revision patients at high risk of dislocation due to a history of prior dislocation, bone loss, joint or soft tissue laxity, neuromuscular disease, or intraoperative instability, and for whom all other options to constrained acetabular components have been considered.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

202

Conditions

Osteoarthritis, Hip Rheumatoid Arthritis Non-Union Fracture Trochanteric Fractures Femoral Neck Fractures Avascular Necrosis Dislocation, Hip

Interventions

Total Hip Arthroplasty with G7 Freedom Constrained Vivacit-E LinersDEVICE

Primary and/or Revision total hip arthroplasty with the G7 Freedom Constrained Vivacit-E Liners

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Patient is 18 to 80 years of age, inclusive * Patient is skeletally mature * Patient qualifies for unilateral total hip arthroplasty based on physical exam and medical history including at least one of the following: * Non-inflammatory degenerative joint disease, including osteoarthritis and avascular necrosis * Rheumatoid arthritis * High risk for dislocation * Undergoing revision hip arthroplasty * Correction of functional deformity * In need of treatment of non-union, femoral neck fracture, and trochanteric fractures of the proximal femur with head involvement, unmanageable by other techniques * Patient is willing and able to complete scheduled follow-up evaluations as described in the protocol and Informed Consent * Patient, or the patient's legally authorized representative, has participated in the Informed Consent process and is willing and able to sign an IRB approved informed consent Exclusion Criteria: * Patient is septic, has an active infection or has osteomyelitis at the affected joint * Patient has significant osteoporosis as defined by treating surgeon * Patient has metabolic disorder(s) which may impair bone formation * Patient has osteomalacia * Patient has distant foci of infections which may spread to the implant site * Patient has rapid joint destruction, marked bone loss or bone resorption on pre-operative radiographs * Patient underwent contralateral THA within 3 months of planned index procedure or has a contralateral THA planned within 3 months of the index procedure * Patient is undergoing simultaneous bilateral THA * Patient has vascular insufficiency, muscular atrophy at the implant site or neuromuscular disease which might jeopardize the outcome of the surgery. * In the opinion of the investigator, patient has any concomitant disease which is likely to jeopardize the functioning or success of the implant * Patient is known to be pregnant * The patient is in the vulnerable population group, such as * a prisoner * a known alcohol or drug abuser * mentally incompetent or unable to understand what participation in this study entails

Locations (10)

University of Alabama at Birmingham

Birmingham, Alabama, United States

University of Southern California

Los Angeles, California, United States

University of Florida Board of Trustees

Gainesville, Florida, United States

Outcomes

Primary Outcomes

Survival of the study device

Survival (whether or not it is still implanted in the subject) determined using Kaplan Meier method.

Time frame: 10 years

Secondary Outcomes

Incidence of treatment-emergent Adverse Events (safety)

Safety is assessed by monitoring the frequency and incidence of all adverse events, with particular focus on those that may be related to the study device.

Time frame: 10 years

Pain and Functional Performance - Modified Harris Hip Score

The Harris Hip Score evaluates hip function, pain, mobility and daily activity impairment after hip replacement surgery. The ten items in the Harris hip score consist of answer choices, awarded a number of points. There are four domains evaluated, as follows: * Pain - 1 item which scores between 0 and 44; * Function - 7 items, scores are between 0 and 47; * Deformity - 1 item which scores either 0 or 4; * Range of motion - 1 item which scores between 0 and 5. The overall score varies between 0 and 100, where scores closer to 0 are suggestive of impaired hip function and scores closer to 100 indicate positive outcome. There are four categories of hip function status: * \<70: poor hip status; * 70 - 79: fair hip status; * 80 - 89: good hip status; * 90 - 100: excellent hip status.

Time frame: 10 years

Pain and Functional Performance - Oxford Hip Score

"The Oxford Hip Score is patient-reported outcome instrument which contains 12 questions on activities of daily living that assess function and residual pain in patients undergoing total hip replacement surgery. Grading the Oxford Hip Score 0 to 19-May indicate severe hip arthritis... 20 to 29-May indicate moderate to severe hip arthritis... 30 to 39-May indicate mild to moderate hip arthritis... 40 to 48-May indicate satisfactory joint function..." Oxford Hip Score. (n.d.) Segen's Medical Dictionary. (2011). Retrieved August 19 2022 from https://medical-dictionary.thefreedictionary.com/Oxford+Hip+Score Each question is scored from 0 to 4 with 4 being the best outcome. This method, when summed, produces overall scores running from 0 to 48 with 48 being the best outcome. The overall score is reached by simply summing the scores received for individual questions. This results in a continuous score ranging from 0 (most severe symptoms) to 48 (least symptoms).

Data from ClinicalTrials.gov

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