- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00208325
PFC Sigma Fixed and Mobile Knee Study
August 1, 2016 updated by: DePuy International
Clinical Evaluation of the P.F.C. Sigma (Fixed Bearing) and P.F.C. Sigma RP (Mobile Bearing) Total Knee Systems
The primary objective of this investigation is to evaluate the performance (in terms of post-operative active range of motion at one year) of the P.F.C. Sigma and P.F.C. Sigma Rotating Platform total knee systems in clinical practice.
Study Overview
Status
Terminated
Conditions
Intervention / Treatment
Detailed Description
The secondary objectives of this investigation are:To evaluate the performance of the P.F.C. Sigma and P.F.C. Sigma Rotating Platform total knee systems in clinical practice.
To evaluate the impact of patellar resurfacing on the performance of the P.F.C. Sigma and the P.F.C. Sigma Rotating Platform total knee systems.
To evaluate the impact of Posterior Cruciate Ligament (PCL) sacrifice or retention on the performance of the P.F.C. Sigma and the P.F.C. Sigma Rotating Platform total knee systems.
Study Type
Interventional
Enrollment (Actual)
754
Phase
- Phase 4
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
-
Glasgow, United Kingdom
- Glasgow Royal Infirmary
-
Glasgow, United Kingdom
- Glasgow Western Infirmary
-
Northampton, United Kingdom
- Northampton General Hospital
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Nottingham, United Kingdom, NG5 1LB
- Nottingham City Hospital
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (ADULT, OLDER_ADULT)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Male or female subjects may be recruited to the evaluation.
- Age - there are no restrictions relating to age of the patient. The patient's age must be considered suitable by the clinical investigator for a bi-compartmental or tri-compartmental knee arthroplasty using either of the two systems available in the evaluation.
- Subjects who are able to give voluntary, written informed consent to participate in this investigation and from whom consent has been obtained.
- Subjects who, in the opinion of the Investigator, are able to understand this investigation, co-operate with the investigational procedures and are willing to return to the hospital for all the required post-operative follow-ups.
- Subjects who require a bi-compartmental or tri-compartmental knee arthroplasty for primary surgical management of idiopathic osteoarthritis.
- Patients who in the opinion of the Clinical Investigator are considered to be suitable for treatment with a fixed or mobile bearing knee system and who are suitable for patella resurfacing.
Exclusion Criteria:
- Patients who, in the opinion of the Investigator, have an existing condition that would compromise their participation and follow-up in this study.
- Patients who require revision total knee arthroplasty surgery.
- Patients with any tibial deformity requiring tibial component augmentation.
- Patients whom, in the opinion of the Clinical Investigator, require a constrained prosthesis.
- Patients with Rheumatoid Arthritis.
- Patients with a pathology which, in the opinion of the Clinical Investigator, will adversely affect healing.
- Patients with other disorders which, in the opinion of the Clinical Investigator, will / could impair rehabilitation.
- Contra-indications for use of the device, as detailed in the package insert.
- Women who are pregnant.
- Subjects who are known drug or alcohol abusers or with psychological disorders that could effect follow-up care or treatment outcomes.
- Subjects who are currently involved in another clinical study with an investigational product.
- Subjects who are currently involved in any injury litigation claims.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: SINGLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: PFC Sigma Fixed Bearing PCL Sacrificed
PFC Sigma Fixed Bearing Total Knee System with PCL Sacrificed
|
Orthopaedic implant for total knee replacement
|
Active Comparator: PFC Sigma RP PCL Sacrificed
PFC Sigma Rotating Platform Total Knee System with PCL Sacrificed
|
Orthopaedic implant for total knee replacement
|
Other: PFC Sigma Fixed Bearing PCL Retained
PFC Sigma Fixed Bearing Total Knee System with PCL Retained
|
Orthopaedic implant for total knee replacement
|
Active Comparator: PFC Sigma RP PCL Retained
PFC Sigma Rotating Platform Total Knee System with PCL Retained
|
Orthopaedic implant for total knee replacement
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
To Compare Range of Motion Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 1 year
|
Range of motion is knee flexion (how far the patient can bend their knee) minus knee extension (how far the patient can straighten their knee).
The result of this subtraction is the range of motion (bending and straightening) for that knee.
|
1 year
|
To Compare Range of Motion Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: 1 year
|
Range of motion is knee flexion (how far the patient can bend their knee) minus knee extension (how far the patient can straighten their knee).
The result of this subtraction is the range of motion (bending and straightening) for that knee.
|
1 year
|
To Compare the Change in Range of Motion From Pre-op to 1 Year Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 1 year
|
Range of motion is knee flexion (how far the patient can bend their knee) minus knee extension (how far the patient can straighten their knee).
The result of this subtraction is the range of motion (bending and straightening) for that knee.
|
Change from pre-op to 1 year
|
To Compare the Change in Range of Motion From Pre-op to 1 Year Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 1 year
|
Range of motion is knee flexion (how far the patient can bend their knee) minus knee extension (how far the patient can straighten their knee).
The result of this subtraction is the range of motion (bending and straightening) for that knee.
|
Change from pre-op to 1 year
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
To Compare the Change in Range of Motion From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
Range of motion is knee flexion (how far the patient can bend their knee) minus knee extension (how far the patient can straighten their knee).
The result of this subtraction is the range of motion (bending and straightening) for that knee.
|
Change from pre-op to 2 years
|
To Compare the Change in Range of Motion From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 2 years
|
Range of motion is knee flexion (how far the patient can bend their knee) minus knee extension (how far the patient can straighten their knee).
The result of this subtraction is the range of motion (bending and straightening) for that knee.
|
Change from pre-op to 2 years
|
To Compare the Change in Range of Motion From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
Range of motion is knee flexion (how far the patient can bend their knee) minus knee extension (how far the patient can straighten their knee).
The result of this subtraction is the range of motion (bending and straightening) for that knee.
|
Change from pre-op to 5 years
|
To Compare the Change in Oxford Knee Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 2 years
|
The Oxford Knee Score (OKS) is a 12 to 60 point patient reported outcome (PRO) score (where 12 indicates the best outcome) that evaluates the affected knee.
The total score is composed of Pain and Function.
|
Change from pre-op to 2 years
|
To Compare the Change in Oxford Knee Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
The Oxford Knee Score (OKS) is a 12 to 60 point patient reported outcome (PRO) score (where 12 indicates the best outcome) that evaluates the affected knee.
The total score is composed of Pain and Function.
|
Change from pre-op to 2 years
|
To Compare the Change in Oxford Knee Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
The Oxford Knee Score (OKS) is a 12 to 60 point patient reported outcome (PRO) score (where 12 indicates the best outcome) that evaluates the affected knee.
The total score is composed of Pain and Function.
|
Change from pre-op to 5 years
|
To Compare the Change in American Knee Society Knee Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
American Knee Society (AKS) knee score is a 0-100 point score (where 100 indicates excellent knee condition) that evaluates the affected knee.
The knee score is composed of Pain, Range of Motion, and Stability.
|
Change from pre-op to 2 years
|
To Compare the Change in American Knee Society Knee Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 2 years
|
American Knee Society (AKS) knee score is a 0-100 point score (where 100 indicates excellent knee condition) that evaluates the affected knee.
The knee score is composed of Pain, Range of Motion, and Stability.
|
Change from pre-op to 2 years
|
To Compare the Change in American Knee Society Knee Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
American Knee Society (AKS) knee score is a 0-100 point score (where 100 indicates excellent knee condition) that evaluates the affected knee.
The knee score is composed of Pain, Range of Motion, and Stability.
|
Change from pre-op to 5 years
|
To Compare the Change in American Knee Society Function Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
American Knee Society (AKS) function score is a 0-100 point score (where 100 indicates excellent knee function) that evaluates the affected knee.
The function score is composed of walking and stair climbing ability.
|
Change from pre-op to 2 years
|
To Compare the Change in American Knee Society Function Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 2 years
|
American Knee Society (AKS) function score is a 0-100 point score (where 100 indicates excellent knee function) that evaluates the affected knee.
The function score is composed of walking and stair climbing ability.
|
Change from pre-op to 2 years
|
To Compare the Change in American Knee Society Function Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
American Knee Society (AKS) function score is a 0-100 point score (where 100 indicates excellent knee function) that evaluates the affected knee.
The function score is composed of walking and stair climbing ability.
|
Change from pre-op to 5 years
|
To Compare the Percentage of Subjects With No Anterior Knee Pain Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 2 years
|
Anterior Knee Pain is assessed by the patient into 1 of 4 categories: None, Mild, Moderate, or Severe.
The percentage of participants with no anterior knee pain is reported in the data table.
|
2 years
|
To Compare the Percentage of Subjects With No Anterior Knee Pain Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: 2 years
|
Anterior Knee Pain is assessed by the patient into 1 of 4 categories: None, Mild, Moderate, or Severe.
The percentage of participants with no anterior knee pain is reported in the data table.
|
2 years
|
To Compare the Percentage of Subjects With No Anterior Knee Pain Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 5 Years
|
Anterior Knee Pain is assessed by the patient into 1 of 4 categories: None, Mild, Moderate, or Severe.
The percentage of participants with no anterior knee pain is reported in the data table.
|
5 Years
|
To Compare the Percentage of Subjects With Good Quadriceps Strength Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 2 years
|
Quadriceps Strength is assessed by the patient into 1 of 3 categories: Good, Fair, or Poor.
The percentage of participants with good quadriceps strength is reported in the data table.
|
2 years
|
To Compare the Percentage of Subjects With Good Quadriceps Strength Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: 2 years
|
Quadriceps Strength is assessed by the patient into 1 of 3 categories: Good, Fair, or Poor.
The percentage of participants with good quadriceps strength is reported in the data table.
|
2 years
|
To Compare the Percentage of Subjects With Good Quadriceps Strength Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 5 Years
|
Quadriceps Strength is assessed by the patient into 1 of 3 categories: Good, Fair, or Poor.
The percentage of participants with good quadriceps strength is reported in the data table.
|
5 Years
|
To Compare the Change in SF-12 Physical Health Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
The 12-Item Short Form Health Survey (SF-12) is a patient reported outcome survey that represents overall subjective health status by measuring eight health-related parameters (each scored from 0 [poor health] to 100 [better health]): body pain, general mental health, perception of general health, physical functioning, role limitations caused by mental condition, role limitations caused by a physical condition, social functioning, and vitality.
The survey is converted into 2 summary measures that are scored from 0 to 100 (where 100 indicates the highest level of health) - the Physical Component Score (PCS-12) and Mental Component Score (MCS-12).
|
Change from pre-op to 2 years
|
To Compare the Change in SF-12 Physical Health Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 2 years
|
The 12-Item Short Form Health Survey (SF-12) is a patient reported outcome survey that represents overall subjective health status by measuring eight health-related parameters (each scored from 0 [poor health] to 100 [better health]): body pain, general mental health, perception of general health, physical functioning, role limitations caused by mental condition, role limitations caused by a physical condition, social functioning, and vitality.
The survey is converted into 2 summary measures that are scored from 0 to 100 (where 100 indicates the highest level of health) - the Physical Component Score (PCS-12) and Mental Component Score (MCS-12).
|
Change from pre-op to 2 years
|
To Compare the Change in SF-12 Physical Health Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
The 12-Item Short Form Health Survey (SF-12) is a patient reported outcome survey that represents overall subjective health status by measuring eight health-related parameters (each scored from 0 [poor health] to 100 [better health]): body pain, general mental health, perception of general health, physical functioning, role limitations caused by mental condition, role limitations caused by a physical condition, social functioning, and vitality.
The survey is converted into 2 summary measures that are scored from 0 to 100 (where 100 indicates the highest level of health) - the Physical Component Score (PCS-12) and Mental Component Score (MCS-12).
|
Change from pre-op to 5 years
|
To Compare the Change in SF-12 Mental Health Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
The 12-Item Short Form Health Survey (SF-12) is a patient reported outcome survey that represents overall subjective health status by measuring eight health-related parameters (each scored from 0 [poor health] to 100 [better health]): body pain, general mental health, perception of general health, physical functioning, role limitations caused by mental condition, role limitations caused by a physical condition, social functioning, and vitality.
The survey is converted into 2 summary measures that are scored from 0 to 100 (where 100 indicates the highest level of health) - the Physical Component Score (PCS-12) and Mental Component Score (MCS-12).
|
Change from pre-op to 2 years
|
To Compare the Change in SF-12 Mental Health Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 2 years
|
The 12-Item Short Form Health Survey (SF-12) is a patient reported outcome survey that represents overall subjective health status by measuring eight health-related parameters (each scored from 0 [poor health] to 100 [better health]): body pain, general mental health, perception of general health, physical functioning, role limitations caused by mental condition, role limitations caused by a physical condition, social functioning, and vitality.
The survey is converted into 2 summary measures that are scored from 0 to 100 (where 100 indicates the highest level of health) - the Physical Component Score (PCS-12) and Mental Component Score (MCS-12).
|
Change from pre-op to 2 years
|
To Compare the Change in SF-12 Mental Health Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
The 12-Item Short Form Health Survey (SF-12) is a patient reported outcome survey that represents overall subjective health status by measuring eight health-related parameters (each scored from 0 [poor health] to 100 [better health]): body pain, general mental health, perception of general health, physical functioning, role limitations caused by mental condition, role limitations caused by a physical condition, social functioning, and vitality.
The survey is converted into 2 summary measures that are scored from 0 to 100 (where 100 indicates the highest level of health) - the Physical Component Score (PCS-12) and Mental Component Score (MCS-12).
|
Change from pre-op to 5 years
|
To Compare the Change in Patella Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
The Patella Score is completed by the clinicians and assesses the anterior knee pain, quadriceps strength, ability to rise from a chair and stair climbing.
The Patella Score ranges from 3 to 30 points with higher scores indicating better functionality and lower scores indicating poorer functionality.
|
Change from pre-op to 2 years
|
To Compare the Change in Patella Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Change from pre-op to 2 years
|
The Patella Score is completed by the clinicians and assesses the anterior knee pain, quadriceps strength, ability to rise from a chair and stair climbing.
The Patella Score ranges from 3 to 30 points with higher scores indicating better functionality and lower scores indicating poorer functionality.
|
Change from pre-op to 2 years
|
To Compare the Change in Patella Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
The Patella Score is completed by the clinicians and assesses the anterior knee pain, quadriceps strength, ability to rise from a chair and stair climbing.
The Patella Score ranges from 3 to 30 points with higher scores indicating better functionality and lower scores indicating poorer functionality.
|
Change from pre-op to 5 years
|
To Compare the Percentage of Subjects With at Least 1 Tibial Radiolucency Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 2 years
|
Tibial Radiolucency observes a radiolucent line (of 0.5mm or wider) on the radiograph around the tibial component.
|
2 years
|
To Compare the Percentage of Subjects With at Least 1 Tibial Radiolucency Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: 2 years
|
Tibial Radiolucency observes a radiolucent line (of 0.5mm or wider) on the radiograph around the tibial component.
|
2 years
|
To Compare the Percentage of Subjects With at Least 1 Tibial Radiolucency Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 5 Years
|
Tibial Radiolucency observes a radiolucent line (of 0.5mm or wider) on the radiograph around the tibial component.
|
5 Years
|
To Compare the Percentage of Subjects With Lateral Release Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: Operative
|
Lateral release is a surgical procedure to release tight capsular structures (lateral retinaculum) on the outside of the kneecap (patella).
It is performed during knee surgery and allows the kneecap to move smoothly in the center of the knee.
Rate information was collected at time of study surgery.
|
Operative
|
To Compare the Percentage of Subjects With Lateral Release Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: Operative
|
Lateral release is a surgical procedure to release tight capsular structures (lateral retinaculum) on the outside of the kneecap (patella).
It is performed during knee surgery and allows the kneecap to move smoothly in the center of the knee.
Rate information was collected at time of study surgery.
|
Operative
|
To Compare the Survivorship Analysis Results Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 2 Years
|
Kaplan Meier survivorship analysis estimates the proportion of a population that will survive past a certain time avoiding a certain event.
In this study, the event is removal of any component for any reason, also known as revision for any reason.
Survival estimates are provided when 40 devices are left still being followed.
|
2 Years
|
To Compare the Survivorship Analysis Results Between Sigma RP and Sigma Fixed Treatment Groups in PCL Retaining Arm
Time Frame: 2 Years
|
Kaplan Meier survivorship analysis estimates the proportion of a population that will survive past a certain time avoiding a certain event.
In this study, the event is removal of any component for any reason, also known as revision for any reason.
Survival estimates are provided when 40 devices are left still being followed.
|
2 Years
|
To Compare the Survivorship Analysis Results Between Sigma RP and Sigma Fixed Treatment Groups in PCL Sacrificing Arm
Time Frame: 5 Years
|
Kaplan Meier survivorship analysis estimates the proportion of a population that will survive past a certain time avoiding a certain event.
In this study, the event is removal of any component for any reason, also known as revision for any reason.
Survival estimates are provided when 40 devices are left still being followed.
|
5 Years
|
To Compare the Percentage of Subjects With No Anterior Knee Pain Between Sigma RP and Sigma Fixed Bearing Treatment Groups With Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 2 Years
|
Anterior Knee Pain is assessed by the patient into 1 of 4 categories: None, Mild, Moderate, or Severe.
The percentage of participants with no anterior knee pain is reported in the data table.
|
2 Years
|
To Compare the Percentage of Subjects With No Anterior Knee Pain Between Sigma RP and Sigma Fixed Bearing Treatment Groups Without Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 2 Years
|
Anterior Knee Pain is assessed by the patient into 1 of 4 categories: None, Mild, Moderate, or Severe.
The percentage of participants with no anterior knee pain is reported in the data table.
|
2 Years
|
To Compare the Percentage of Subjects With No Anterior Knee Pain Between Sigma RP and Sigma Fixed Bearing Treatment Groups With Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 5 Years
|
Anterior Knee Pain is assessed by the patient into 1 of 4 categories: None, Mild, Moderate, or Severe.
The percentage of participants with no anterior knee pain is reported in the data table.
|
5 Years
|
To Compare the Percentage of Subjects With No Anterior Knee Pain Between Sigma RP and Sigma Fixed Bearing Treatment Groups Without Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 5 Years
|
Anterior Knee Pain is assessed by the patient into 1 of 4 categories: None, Mild, Moderate, or Severe.
The percentage of participants with no anterior knee pain is reported in the data table.
|
5 Years
|
To Compare the Percentage of Subjects With Good Quadriceps Strength Between Sigma RP and Sigma Fixed Bearing Treatment Groups With Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 2 Years
|
Quadriceps Strength is assessed by the patient into 1 of 3 categories: Good, Fair, or Poor.
The percentage of participants with good quadriceps strength is reported in the data table.
|
2 Years
|
To Compare the Percentage of Subjects With Good Quadriceps Strength Between Sigma RP and Sigma Fixed Bearing Treatment Groups Without Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 2 Years
|
Quadriceps Strength is assessed by the patient into 1 of 3 categories: Good, Fair, or Poor.
The percentage of participants with good quadriceps strength is reported in the data table.
|
2 Years
|
To Compare the Percentage of Subjects With Good Quadriceps Strength Between Sigma RP and Sigma Fixed Bearing Treatment Groups With Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 5 Years
|
Quadriceps Strength is assessed by the patient into 1 of 3 categories: Good, Fair, or Poor.
The percentage of participants with good quadriceps strength is reported in the data table.
|
5 Years
|
To Compare the Percentage of Subjects With Good Quadriceps Strength Between Sigma RP and Sigma Fixed Bearing Treatment Groups Without Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: 5 Years
|
Quadriceps Strength is assessed by the patient into 1 of 3 categories: Good, Fair, or Poor.
The percentage of participants with good quadriceps strength is reported in the data table.
|
5 Years
|
To Compare the Change in Patella Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Bearing Treatment Groups With Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
The Patella Score is completed by the clinicians and assesses the anterior knee pain, quadriceps strength, ability to rise from a chair and stair climbing.
The Patella Score ranges from 3 to 30 points with higher scores indicating better functionality and lower scores indicating poorer functionality.
|
Change from pre-op to 2 years
|
To Compare the Change in Patella Score From Pre-op to 2 Years Between Sigma RP and Sigma Fixed Bearing Treatment Groups Without Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: Change from pre-op to 2 years
|
The Patella Score is completed by the clinicians and assesses the anterior knee pain, quadriceps strength, ability to rise from a chair and stair climbing.
The Patella Score ranges from 3 to 30 points with higher scores indicating better functionality and lower scores indicating poorer functionality.
|
Change from pre-op to 2 years
|
To Compare the Change in Patella Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Bearing Treatment Groups With Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
The Patella Score is completed by the clinicians and assesses the anterior knee pain, quadriceps strength, ability to rise from a chair and stair climbing.
The Patella Score ranges from 3 to 30 points with higher scores indicating better functionality and lower scores indicating poorer functionality.
|
Change from pre-op to 5 years
|
To Compare the Change in Patella Score From Pre-op to 5 Years Between Sigma RP and Sigma Fixed Bearing Treatment Groups Without Patella Resurfacing in the PCL Sacrificing Arm
Time Frame: Change from pre-op to 5 years
|
The Patella Score is completed by the clinicians and assesses the anterior knee pain, quadriceps strength, ability to rise from a chair and stair climbing.
The Patella Score ranges from 3 to 30 points with higher scores indicating better functionality and lower scores indicating poorer functionality.
|
Change from pre-op to 5 years
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
May 1, 2000
Primary Completion (Actual)
January 1, 2009
Study Completion (Actual)
September 1, 2010
Study Registration Dates
First Submitted
September 13, 2005
First Submitted That Met QC Criteria
September 13, 2005
First Posted (Estimate)
September 21, 2005
Study Record Updates
Last Update Posted (Estimate)
September 13, 2016
Last Update Submitted That Met QC Criteria
August 1, 2016
Last Verified
August 1, 2016
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CT 9923
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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Isfahan University of Medical SciencesCompletedOsteoarthritisIran, Islamic Republic of
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DePuy OrthopaedicsCompletedArthritis, Rheumatoid | Osteoarthritis, KneeUnited States
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DePuy OrthopaedicsCompletedOsteoarthritis | Rheumatoid Arthritis | Avascular Necrosis | Juvenile Rheumatoid Arthritis | Post-Traumatic Arthritis | Other Inflammatory ArthritisUnited States
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DePuy OrthopaedicsCompletedOsteoarthritis | Rheumatoid Arthritis | Post-traumatic Arthritis | Juvenile Rheumatoid Arthritis | Avascular Necrosis of BoneUnited States
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DePuy OrthopaedicsCompletedOsteoarthritis | Rheumatoid ArthritisKorea, Republic of, Australia
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DePuy OrthopaedicsTerminatedArthritis, Rheumatoid | Osteoarthritis | Rheumatoid Arthritis | Post-traumatic Arthritis | Avascular Necrosis of BoneUnited States
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DePuy InternationalTerminatedOsteoarthritisIndia, Japan, Korea, Republic of, New Zealand, Singapore, Thailand, United Kingdom
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Maastricht University Medical CenterStryker NordicCompletedArthritis of the Knee Joint
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Damascus UniversityCompletedJoint Diseases | Arthroplasty Complications | Arthritis KneeSyrian Arab Republic