Randomized Controlled Clinical Evaluation to Compare Vanguard Cruciate Retaining and AGC Total Condylar Knee Implants

NCT ID: NCT01064063

Last Updated: 2025-11-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

150 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-02-15

Study Completion Date

2022-05-10

Brief Summary

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This evaluation is being conducted on the relative new knee system, the Vanguard Cruciate Retaining (CR) to evaluate clinical efficacy of the Vanguard CR components.

Detailed Description

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This clinical trial was initially designed as a multi-centre, randomized controlled study, comparing the Vanguard CR with the AGC in routine use. The study now is a single centre study.

The Vanguard CR system has been specifically designed to give greater knee stability through the use of more anatomic patello-femoral kinematics.

Conditions

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Osteoarthritis Rheumatoid Arthritis Traumatic Arthritis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Patients will be randomised into two arms, one receiving the AGC CR cement knee system (control group), and the other receiving Vanguard CR cement knee system (trial group).
Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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AGC knee

Patients were randomised to receive an AGC Cruciate Retaining cement knee. This is the control group in the study; the AGC is the gold standard of Biomets' knee products.

Group Type ACTIVE_COMPARATOR

AGC knee

Intervention Type DEVICE

The AGC knee is a metal and polyethylene total condylar knee system offering complete component interchangeability.

Vanguard CR

Patients were randomised to receive a Vanguard Cruciate Retaining Knee from the Vanguard system which encompasses concepts used in the AGC family of knees. The Vanguard is specifically designed to give greater knees stability through use of more anatomic patello-femoral kinematics.

Group Type EXPERIMENTAL

Vanguard CR

Intervention Type DEVICE

The Vanguard CR is a metal and polyethylene total condylar knee system. The system contains three primary components: femoral, tibial, and bearing components, and a peripheral component: the patella button.

Interventions

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Vanguard CR

The Vanguard CR is a metal and polyethylene total condylar knee system. The system contains three primary components: femoral, tibial, and bearing components, and a peripheral component: the patella button.

Intervention Type DEVICE

AGC knee

The AGC knee is a metal and polyethylene total condylar knee system offering complete component interchangeability.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Pre-op knee score of \<70
* Scheduled to undergo primary total knee replacement with any of the following indication:

1. pain and disabled knee joint resulting from Osteoarthritis, Rheumatoid Arthritis, or Traumatic arthritis.
2. One or more compartments involved.
* Need to obtain pain relief and improve function
* Ability and willingness to follow instructions, including control of weight and activity level, and to return for follow-up evaluations
* A good nutritional state of the patient
* Full skeletal maturity of the patient, patients who are at least 18 years of age.
* Patients of either sex
* Consent form read, understood, and signed by patient

Exclusion Criteria

* Pre-op knee score greater than or equal to 70
* Infection
* Osteomyelitis
* Previous partial or total prosthetic knee replacement on the operative side
* Skeletal immaturity of the patient, patients who are less than 18 years of age.
* Sepsis
* Uncooperative patient or patient with neurological disorders who are incapable of following directions
* Osteomalacia
* Distant foci of infections
* Rapid joint destruction, marked bone loss, or bone resorption apparent on roentgenogram
* Vascular insufficiency, muscular atrophy, or neuromuscular disease in affected limb
* Incomplete or deficient soft tissue surrounding the knee
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Zimmer Biomet

INDUSTRY

Sponsor Role lead

East Sussex Hospitals NHS Trust

OTHER

Sponsor Role collaborator

Biomet U.K. Ltd.

INDUSTRY

Sponsor Role collaborator

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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A. Butler-Manual, FRCS

Role: PRINCIPAL_INVESTIGATOR

East Sussex Hospital NHS Trust - Conquest Hospital

Locations

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East Sussex Hospital NHS Trust

Saint Leonards-on-Sea, East Sussex, United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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NCT01064063

Identifier Type: REGISTRY

Identifier Source: secondary_id

BMETEU.CR.LEU29

Identifier Type: -

Identifier Source: org_study_id

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