- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04524312
Dynamic Congruence Total Knee Replacement vs Posterior-stabilized (K-Mod)
Does Dynamic Congruence Design Improve Gait After Total Knee Replacement in Comparison to Posterior-stabilized One? - Prospective Randomized Controlled Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The aim of this study is to assess and compare kinematic and time-space gait parameters in patients after total knee arthroplasty, who will undergo the surgery with the use of either posterior-stabilized (PS) or dynamic congruence (DC) implants.
Materials and methods To this study 56 consecutive patients undergoing total knee arthroplasty will be recruited. Study protocol is designed as a prospective, blinded, parallel-group, superiority trial, with balanced randomization [1:1]. All participants will be operated in single clinical orthopedic department, by single high-volume surgeon, who performed more than 3000 total knee arthroplasties in his professional career.
Before the surgery patients will fulfill the author's questionnaire concerning their age, height and body mass, level of activity and VAS (Visual Analogue Scale).
After the surgery 1 to 3 years postoperatively three-dimensional gait analysis will performed with use of BTS SMART device. This device uses passive markers technology and registers the movement by six cameras. To perform full gait analysis several data concerning patients anthropometry will be collected (lower limb length, knee and ankle joint width, width and depth of the pelvis). Whole gait analysis will be performed by experienced single clinical biomechanist accordingly to the Davis protocol. Markers will be installed on the patients' limbs on the following points: base of sacral bone, greater trochanter of the femur, lateral femoral condyle, head of the fibula, lateral malleoli, head of the V metatarsal bone).
Participants will walk barefoot for 10 meters quadruple times. Following time-space and kinematic parameters will be assessed:
Time-space parameters Single stance time (T1) [%] Swing time (T2) [%] Double-stance time (T3) [%] Step length (SL) [m] Mean gait velocity (Vm) [m/s] Cadence (C) [number of steps/min]
Kinematic parameters:
Operated knee range of flexion during swing phase [°]
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Mazowieckie
-
Warszawa, Mazowieckie, Poland, 03-984
- Department of Othopedics and Rehabilitation, Medical University of Warsaw
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- agreement to participate in the study
- BMI (kg/m2) less than 40
- ability to walk for 10 meters
- knee flexion more or equal of 90 degrees
Exclusion Criteria:
- unwillingness to participate in the study
- osteoarthritis due to the rheumatological disease
- disorders associated with nerve-muscle signal transmission
- neurological disorders associated with dizziness, nystagmus or other conditions that might influence balance during activity
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: NexGen
Patients undergoing total knee replacement for treatment of primary knee ostearthritis with use of Zimmer Biomet NexGen prosthesis
|
Participant will undergo total knee replacement performed via anterior parapatellar approach with either Posterior-stabilized or retaining cruciate-retaining with dynamic congruence implant
Participants will be asked to perform biomechanical assesment before and following surgery at baseline, 6-8 weeks and 6-months postoperatively
Participant are randomly allocated to receive one of the NexGen PS or Biomplanti K-MOD total knee implant for treatment of end-stage knee osteoarthritis.
|
Active Comparator: K-Mod
Patients undergoing total knee replacement for treatment of primary knee ostearthritis with use of Bioimplanti K-MOD prosthesis
|
Participant will undergo total knee replacement performed via anterior parapatellar approach with either Posterior-stabilized or retaining cruciate-retaining with dynamic congruence implant
Participants will be asked to perform biomechanical assesment before and following surgery at baseline, 6-8 weeks and 6-months postoperatively
Participant are randomly allocated to receive one of the NexGen PS or Biomplanti K-MOD total knee implant for treatment of end-stage knee osteoarthritis.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Time of swing phase
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline part of swing phase time during gait, measured in percentage Change from baseline part of swing phase time during gait, measured in percentage |
Time Frame: 1-3 years after surgery
|
Time of stance phase
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline part of stance phase time during gait, measured in percentage
|
Time Frame: 1-3 years after surgery
|
Time of double-stance phase
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline part of double-stance phase time during gait, measured in percentage
|
Time Frame: 1-3 years after surgery
|
Stride length
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline length of stride during gait, measured in meters
|
Time Frame: 1-3 years after surgery
|
Cadence
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline number of strides per minute of walking
|
Time Frame: 1-3 years after surgery
|
Mean gait velocity
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline mean values of gait speed, measured in meters per second
|
Time Frame: 1-3 years after surgery
|
Range of maximal hip extension for both limbs during ending part of mid-stance phase
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline range of maximal hip extension for both limbs during ending part of mid-stance phase, measured in degrees
|
Time Frame: 1-3 years after surgery
|
Range of pelvic drop in frontal plane on the opposite site of the bearing limb
Time Frame: Time Frame: 1-3 years after surgery
|
Change from baseline range of pelvic drop in frontal plane on the opposite site of the bearing limb, measured in degrees
|
Time Frame: 1-3 years after surgery
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- WarsawMU/kmod
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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