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Visionaire™ Versus Standard Instrumentation Safety and Efficacy in Total Knee Arthroplasty (TKA)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT01084772
Recruitment Status : Terminated
First Posted : March 10, 2010
Results First Posted : April 3, 2020
Last Update Posted : April 3, 2020
Sponsor:
Information provided by (Responsible Party):
Smith & Nephew, Inc.

Brief Summary:
The objective of this study is to assess outcomes following TKA, utilizing two surgical techniques. Patients will be randomized to one of two arms: TKA with standard instrumentation and TKA with VISIONAIRE™ patient-matched cutting blocks. Data will be collected at preoperative, operative/discharge, 3 months, 1 year and 2 years after TKA. The secondary objective of this study is to compare the safety, quality of life, and economic outcomes of TKA when these two techniques are utilized. This study does not involve treatment or investigational products, as all components are FDA cleared and are commercially available.

Condition or disease Intervention/treatment Phase
Degenerative Arthritis of Knee Other: VISIONAIRE Total Knee Arthroplasty Other: Standard Total Knee Arthroplasty Not Applicable

Detailed Description:

This is a prospective study comparing VISIONAIRE™ to standard TKA instrumentation. The objective of this study is to evaluate the safety and efficacy of TKA using VISIONAIRE™ when compared with standard instrumentation, including device survival, improvement in function and implant alignment after TKA. This study will also document any device-related, surgical complications and/or adverse radiographic observations.

In contrast with the control group clinical outcomes following TKA completed with VISIONAIRE™ have yet to be assessed. The current investigation will determine if there is any difference in TKA outcomes when VISIONAIRE™ patient matched technology is utilized versus standard instrumentation. All patients meeting the inclusion/exclusion criteria specified in this protocol will be asked to participate in the study. If the patient consents to participate, they will be enrolled in the study and randomized to one of the two study arms. Patients requiring TKA will be implanted with Legion, Genesis II or Journey BCS (Smith & Nephew) total knee implant systems. Standard instrumentation will be used to assist the surgeon in placing the implant in the control group. In the VISIONAIRE™ group, standard instrumentation will not be used in the surgery. Patients randomized to the VISIONAIRE™ arm will have an MRI preoperatively that will be used to create the customized cutting blocks. All patients will have an x-ray at each postoperative interval.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 134 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: A Multicenter, Randomized, Clinical Outcome of VISIONAIRE™ Patient Matched Technology vs. Standard Surgical Instrumentation in Total Knee Arthroplasty
Actual Study Start Date : June 21, 2012
Actual Primary Completion Date : April 15, 2014
Actual Study Completion Date : September 2015

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Knee Replacement

Arm Intervention/treatment
VISIONAIRE Instrumentation
TKA with VISIONAIRE instrumentation
Other: VISIONAIRE Total Knee Arthroplasty
TKA will be performed with VISIONAIRE instrumentation, depending on randomization assignment.

Standard Instrumentation
TKA with standard instrumentation
Other: Standard Total Knee Arthroplasty
TKA will be performed with standard instrumentation, depending on randomization assignment.




Primary Outcome Measures :
  1. Knee Society Clinical (KSS) Score at 2 Years Following Surgery - Total Score [ Time Frame: 2 years postoperatively ]
    The KSS was used to rate both the prosthesis function and the patient's functional abilities after TKA. The KSS Total Score (0-100 points) included a combined evaluation of joint motion (0-25 points), instability (0-25 points), alignment (0-25 points), and symptoms (0-25 points). A higher score indicated a better outcome for subjects.

  2. Knee Society Clinical (KSS) Score at 2 Years Following Surgery - Clinical Evaluation Questionnaire [ Time Frame: 2 years postoperatively ]
    The KSS was used to rate both the prosthesis function and the patient's functional abilities after TKA. The KSS clinical evaluation included a questionnaire completed by the investigators to assess for pain, stability, flexion contracture, extension lag, and alignment and evaluated based on number of subjects experiencing any of these issues at the 2-year postoperative visit.


Secondary Outcome Measures :
  1. Evaluation of Mechanical Alignment Assessed as Either Neutral or Varus/Valgus 3 Months Postoperatively Using a Full Leg X-ray [ Time Frame: 3 months postoperative ]
    Long radiographic anterior-posterior (AP) (full-leg standing x-rays) of the entire limb are superior for measuring alignment of the knee as the limb mechanical axes may be more precisely computed. For full-leg x-rays, 2 lines were drawn on the radiograph. First, a line was drawn from the center of the femoral head to the center of the femoral intercondylar notch and the line was extended through to the ankle. Second, a line was drawn from the center of the tibial spine to the center of the ankle talus. The angle between the first and second line was measured to determine mechanical alignment and assessed as either neutral (0 degrees) or a number of degrees of varus or valgus.

  2. Knee Injury and Osteoarthritis Outcome Score (KOOS) Preoperatively and Postoperatively [ Time Frame: Baseline (preoperative), 3 months, 1 year, and 2 years postoperatively ]
    Evaluation of KOOS questionnaire total scores including categories for symptoms, pain, function of daily living, function of sports and recreational activities, and quality of life. KOOS total scores ranged from 0 to 100, with 0 indicating worst (no function) and 100 indicating no symptoms at all.

  3. Serial Radiographic Evaluations to Assess Evidence of Loosening (Radiolucencies) by Measuring Lucent Zones at 1 Year Postoperatively [ Time Frame: 1 year postoperatively ]
    X-ray evaluations performed to assess for evidence of implant loosening by radiolucencies (> 2 mm). Anterior-posterior (AP) and lateral serial x-ray evaluations were performed. The span of the bone-prosthesis interface, for each component, was broken down into zone systems. The scoring system for each of the 3 components was determined by measuring the radiolucent lines (mm) for each of these zones.

  4. Radiographic Outcomes to Assess Evidence of Loosening at 1 Year Postoperatively [ Time Frame: 1 year postoperatively ]
    X-ray evaluations performed to assess for evidence of implant loosening by lack of evidence of surface wear or particulate debris generation, indications of early osteolysis, implant migration, and/or other clinical or radiographic abnormalities. Anterior-posterior (AP) and lateral serial x-ray evaluations were performed.

  5. Serial Radiographic Evaluations to Assess Evidence of Loosening at 2 Years Postoperatively [ Time Frame: 2 years postoperatively ]
    X-ray evaluations performed to assess for evidence of implant loosening by radiolucencies (> 2 mm), lack of evidence of surface wear or particulate debris generation, indications of early osteolysis, implant migration, and/or other clinical or radiographic abnormalities. Anterior-posterior (AP) and lateral serial x-ray evaluations were performed. The span of the bone-prosthesis interface, for each component, was broken down into zone systems. The scoring system for each of the 3 components was determined by measuring the radiolucent lines (mm) for each of these zones.

  6. Radiographic Outcomes to Assess Evidence of Loosening at 2 Years Postoperatively [ Time Frame: 2 years postoperatively ]
    X-ray evaluations performed to assess for evidence of implant loosening by lack of evidence of surface wear or particulate debris generation, indications of early osteolysis, implant migration, and/or other clinical or radiographic abnormalities. Anterior-posterior (AP) and lateral serial x-ray evaluations were performed.

  7. Evaluation of Health Economic Criteria - Surgical Time Details [ Time Frame: During and immediately following surgery ]
    Analysis of health data captured during and immediately following surgery: anesthesia time, operative time (skin-to-skin), tray setup, duration of operation, blood loss, incision length, number of instrument trays setup, and number of instrument trays used.

  8. Evaluation of Health Economic Criteria - Blood Loss [ Time Frame: During and immediately following surgery ]
    Analysis of health data captured during and immediately following surgery: anesthesia time, operative time (skin-to-skin), tray setup, duration of operation, blood loss, incision length, number of instrument trays setup, and number of instrument trays used.

  9. Evaluation of Health Economic Criteria - Incision Length [ Time Frame: During and immediately following surgery ]
    Analysis of health data captured during and immediately following surgery: anesthesia time, operative time (skin-to-skin), tray setup, duration of operation, blood loss, incision length, number of instrument trays setup, and number of instrument trays used.

  10. Evaluation of Health Economic Criteria - Instrument Tray Use [ Time Frame: During and immediately following surgery ]
    Analysis of health data captured during and immediately following surgery: anesthesia time, operative time (skin-to-skin), tray setup, duration of operation, blood loss, incision length, number of instrument trays setup, and number of instrument trays used.

  11. Evaluation of Health Economic Surgical Criteria [ Time Frame: During and immediately following surgery ]
    Analysis of health data captured during and immediately following surgery: surgical approach, cut order, final status of posterior cruciate ligament (PCL), and need for perioperative prophylaxis antibiotics.



Information from the National Library of Medicine

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, Learn About Clinical Studies.


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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

Patients must meet all of the inclusion criteria.

  1. Patient diagnosed with degenerative arthritis of the knee requiring a unilateral primary TKA.
  2. Patient is of legal age to consent and is skeletally mature.
  3. Patient is willing to sign and date an ethics-approved consent form.
  4. Patient is willing to be available for two-year follow-up postoperatively

Exclusion Criteria:

Patients must not meet any of the exclusion criteria.

  1. Patient is known to have poor bone stock making a TKA unjustifiable.
  2. Patient is immuno-suppressed.
  3. Patient has physical, emotional or neurological conditions that would compromise the patient's compliance with postoperative rehabilitation and follow-up.
  4. Patient is pregnant or may become pregnant during the course of the study.
  5. Patient has a history of prior ipsilateral major knee surgery (e.g. arthroplasty, high tibial osteotomy, or tibial plateau fracture). Minor prior procedures such as ACL repair, meniscectomy, or arthroscopy are not excluded.
  6. Patient has active, localized or systemic infection.
  7. Patient is severely overweight (BMI >40).
  8. Patient is a prisoner.
  9. Subject has a significant MRI (magnetic resonance imaging) exclusion or contraindication.
  10. Patient has had a total joint arthroplasty of the contralateral limb in the last 12 months.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01084772


Locations
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United States, Illinois
Orthopaedic Surgery Specialist, Ltd.
Park Ridge, Illinois, United States, 60068
Southern Illinois University School of Medicine
Springfield, Illinois, United States, 62794-9679
United States, Missouri
Town & Country Orthopedics
Saint Louis, Missouri, United States, 63131
United States, Nebraska
University of Nebraska Medical Center
Omaha, Nebraska, United States, 68198-1080
United States, North Carolina
Wake Forest University School of Medicine
Winston-Salem, North Carolina, United States, 27157-1070
United States, Oregon
Slocum Research & Education Foundation
Eugene, Oregon, United States, 97401
Australia, Victoria
Malabar Orthopaedic Clinic
Windsor, Victoria, Australia, 3181
Sponsors and Collaborators
Smith & Nephew, Inc.
Investigators
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Study Director: Beate Hanson, MD, PhD Smith & Nephew, Inc.
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Responsible Party: Smith & Nephew, Inc.
ClinicalTrials.gov Identifier: NCT01084772    
Other Study ID Numbers: VISSTD01
First Posted: March 10, 2010    Key Record Dates
Results First Posted: April 3, 2020
Last Update Posted: April 3, 2020
Last Verified: March 2020
Additional relevant MeSH terms:
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Osteoarthritis
Arthritis
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases