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Vanguard Complete Knee Versus Vanguard High Flex Rotating Platform (RP) Knee Study

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
Zimmer Biomet Identifier:
First received: October 26, 2009
Last updated: March 20, 2017
Last verified: July 2016
The purpose of this study is to compare Vanguard High Flex Rotating Platform to Vanguard Complete Knee System in Asian population in terms of early range of motion (ROM), clinical outcomes, and kinetic and kinematic characteristics in relation to healthy knees.

Condition Intervention
Rheumatoid Arthritis
Traumatic Arthritis
Device: Vanguard Complete Knee
Device: Vanguard High Flex RP

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: A Prospective Controlled Multi-center Study on Vanguard Complete Knee and Vanguard High Flex RP Knee

Resource links provided by NLM:

Further study details as provided by Zimmer Biomet:

Primary Outcome Measures:
  • American Knee Society Knee Score, including ROM [ Time Frame: 1 Year postop ]

Secondary Outcome Measures:
  • Kinematic Fluoroscopic Analysis [ Time Frame: 3 yr ]
  • Gait Lab Analysis [ Time Frame: 3 yr ]
  • EQ5D [ Time Frame: 3 mo, 6 mo, 1 yr, 3 yr, 5 yr, 7 yr, 10 yr ]
  • Radiographic Assessment [ Time Frame: immediate postop, 3 mo, 6 mo, 1 yr, 3 yr, 5 yr, 7 yr, 10 yr ]

Estimated Enrollment: 300
Study Start Date: October 2009
Estimated Study Completion Date: October 2021
Primary Completion Date: October 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Vanguard Complete Knee
Vanguard Completed Knee with Microplasty Tibial Tray is designed to hold the tibial knee bearings in a microplsty knee procedure. The Co-Cro-Mo trays are designed with a shorter stem.
Device: Vanguard Complete Knee
Vanguard Knee is a metal and polyethylene system indicated for cemented tibial and femoral use.
Active Comparator: Vanguard High Flex RP
VGRD High Flex RP knee is an extension to the exsting Vanguard Knee and has been specifically desinged to facilitate greather than 135 degrees of knee flextion as required by certain patients.
Device: Vanguard High Flex RP
Vanguard High Flex RP is an extension to the existing Vanguard Knee and has been specifically designed to facilitate greater than 135 degrees of knee flexion.

Detailed Description:

The primary objectives of this clinical study include:

  • Evaluate size fit and long term performance of Vanguard Complete Knee ("Fixed") System in Asian and Latino population in comparison to competitor's similar product.
  • Evaluate efficacy of Vanguard Complete Knee with Microplasty Tibial Tray.
  • Compare Vanguard High Flex Rotating Platform ("High Flex") Knee System to Vanguard Complete Knee System in Asian population in terms of:

    • Early ROM
    • Clinical outcomes
    • Kinetic and Kinematic characteristics in relation to Healthy Knees. o
  • Compare current design to new design of Vanguard High Flex Rotating Platform Knee System in terms of :

    • Early ROM
    • Clinical outcomes
    • Kinetic and Kinematic characteristics

Ages Eligible for Study:   21 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Painful and disabled knee joint resulting form osteoarthritis, rheumatoid arthritis, traumatic arthritis where one or more compartments are involved.
  • Correction of varus, valgus, or posttraumatic deformity.
  • Correction or revision of unsuccessful osteotomy, or arthrodesis.
  • Need to obtain pain relief and improve function.
  • Ability and willingness of the patient to follow instructions, including control of weight and activity level.
  • Good nutritional state of the patient.
  • Patient must have reached full skeletal maturity.

Exclusion Criteria:

  • Infection, sepsis, osteomyelitis, and failure of previous joint replacement.
  • Uncooperative patient or patients with neurologic disorders who are incapable of following directions.
  • Osteoporosis
  • 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 apparent on roentgenogram
  • Vascular insufficiency, muscular atrophy, neuromuscular disease
  • Incomplete or deficient soft tissue surrounding the knee
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01010269

Korea, Republic of
Asan Medical Center
Seoul, Korea, Republic of
Samsung Medical Center
Seoul, Korea, Republic of
Seoul Nat'l Uni. Hospital
Seoul, Korea, Republic of
The Catholic Uni. of Korea, Seoul St. Mary's Hospital
Seoul, Korea, Republic of
Sponsors and Collaborators
Zimmer Biomet
Principal Investigator: Myung-Chul Lee, M.D., Ph.D. Seoul National University Hospital
Principal Investigator: Chul-Won Ha, M.D., Ph.D. Samsung Medical Center
Principal Investigator: Seong-Il Bin, M.D., Ph.D. Asan Medical Center
Principal Investigator: Yong In, M.D., Ph.D. Catholic University Uijungbu St. Mary's Hospital
  More Information

Responsible Party: Zimmer Biomet Identifier: NCT01010269     History of Changes
Other Study ID Numbers: INT.CR.RROW1
Study First Received: October 26, 2009
Last Updated: March 20, 2017
Individual Participant Data  
Plan to Share IPD: Yes

Additional relevant MeSH terms:
Arthritis, Rheumatoid
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases
Connective Tissue Diseases
Autoimmune Diseases
Immune System Diseases processed this record on May 25, 2017