Knee replacement surgery is a surgery designed to treat severe arthritis of the knee. However, as many as 20% of patients are not satisfied with the results of their surgery. To place the knee replacement in correct position, the kinematic alignment method, which tries to reproduce the patient normal anatomy, has shown promise in improving the satisfaction after knee replacement surgery. It is not known if using a robotic arm to assist in surgery is better than the traditional method when trying to recreate kinematic alignment.
The goal of this study is to learn if robotic assisted surgery is better than traditional method for knee replacement done using kinematic alignment. The main questions the study tries to answer are:
1. Do the radiographs of kinematic knee replacement surgeries done with robotic assistance show better alignment than radiographs of kinematic knee replacements done with the traditional method? 2. Does robotic assisted kinematic knee replacement give better function to patients than traditional knee replacement done with kinematic alignment? 3. Does robotic assisted kinematic knee replacement decrease pain, improve knee movement and improve knee stability better than traditional knee replacement done with kinematic alignment? 4. Are there more complications with robotic assisted kinematic knee replacement in comparison to traditional kinematic knee replacement? 5. How long long does it take a surgeon to become good a performing a kinematic knee replacement using robotic assistance? Researchers will compare knee replacements done using a robotic to make the bone cuts, and compare it to the usual method using guides and manual instruments. All the knee replacements will be done using the kinematic alignment and with the same type of knee replacement prothesis.
Participants will:
* Have a knee replacement done with the kinematic alignment technique by an experienced surgeon, with or without robotic assistance during the surgery. * Visit the clinic before surgery, six weeks after surgery, three months, six months, twelve months and twenty-four months after the surgery. * Fill questionnaire, have their knee examined and have radiographs of their knee done at each visit.
Patient aged 18 or above
Patient being consented for a primary total knee arthroplasty (TKA)
The primary TKA is planned to be done with kinematic alignment
All pre-operative alignments are included
Revision TKA (including revision of unicompartimental knee arthroplasty into total knee arthroplasty with primary components). TKA being done in the setting of previous femur or tibia fracture or osteotomy are however included.
No available adequate pre-operative imaging
Patient who does want to be randomized of the two groups
At the discretion of the surgeon, if the patient's pathology or particular anatomy precludes the use of kinematic alignment technique, robotic surgery, or traditional instrument TKA.
Parallel
Kinematic aligned total knee replacement
Procedure/SurgeryReplacement of worn knee cartilage using a prosthesis. The alignment is determined according to the patient's anatomy and ligament balance.
Radiographic alignment of the knee
Long leg anteroposterior views of both legs and lateral knee radiographs will be used to measure knee alignment and position of the knee replacement hardware. The angles measured and analyzed will be: * The hip-knee-ankle (HKA) angle * Medial proximal tibia mechanical angle (MPTAm) * Lateral distal femur mechanical angle (LDTAm) * Distal femur flexion angle (DFFA) * Posterior tibial slope (PTS) Radiographic measurements will be made by a trained observer and a fellowship-train arthroplasty surgeon.
Knee Injury and Osteoarthritis Outcome Score (KOOS)
Patient questionnaire (42 questions) evaluating knee pain, symptoms, function, recreational activities and knee-related quality of life. The questionnaire is score over 100 points, with a higher score meaning better knee function.
Forgotten joint score
A 12-questions form asking patients if they forget about their joint during activities of daily living.
Joint perception question
A single item question asking participants how they perceive their operated knee, from "like a native or natural joint" to "like a nonfunctional joint".
Pain visual analog scale
Pain rated on a 10 cm visual analog scale from "no pain" to "worst pain imaginable"
Subjective Assessment Numeric Evaluation Scale (SANE)
Single question evaluation scale asking the patient to rate their knee function from 0 (no function) to 100 (completely normal function)
Knee range of motion
Maximum passive flexion and extension measured with goniometer
Knee stability
Anterior drawer, posterior drawer, valgus stress, varus stress. Instability rated for each test 1 to 3 by treating surgeon.
Intra-operative procedures
During surgery, the knee for additional intra-operative procedures to obtain a stable knee replacement will be noted: * Need for ligamentous release - lateral release, medial release, lateral retinaculum release, posterior cruciate ligament release * Need for tibial or femoral recut
Surgical cost
Total cost of implants and equipment used will be calculated at the end of each surgical case.
Surgical time
The time from first incision to skin closure will be noted at each surgery.
Intra-operative complications
The incidence of intra-operative complications will be noted: * Unplanned ligament injury * Neurovascular damage * Intra-operative tibial of femoral fracture * Any other complications noted during surgery
Click on the lead sponsor to view all of their trials.
Université de Sherbrooke
Lead sponsor
Hopital Charles Lemoyne
Collaborator
This trial is not recruiting at the moment. You can still explore other options:
