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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT04960345
Other study ID # navigation68480
Secondary ID
Status Not yet recruiting
Phase
First received
Last updated
Start date January 1, 2022
Est. completion date December 31, 2023

Study information

Verified date July 2021
Source Peking University Third Hospital
Contact Hua Tian
Phone 13511065187
Email tianhua@bjmu.edu.cn
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

This is a a prospective cohort study. According to the inclusion criteria, volunteers were recruited from patients undergoing total knee arthroplasty. The patients are devided into two groups: the conventional TKA,the computer-assisted surgery(CAS) using Brainlab Knee 3 system.The differences of postoperative alignment,operative time,blood loss will be studied between the two groups.Clinical and functional evaluation using the scoring system of HSS(Hospital for Special Surgery) score, Western Ontario and McMaster University osteoarthritis index (WOMAC), Forgotten joint score(FJS-12) will be compared between the 2 groups,after surgery, and at the follow-up of 3 months、6 months and 12 months.


Description:

According to the inclusion criteria, patients receiving primary total knee arthroplasty were recruited and divided into two groups after doctor-patient joint decision: the traditional group underwent prosthesis placement using traditional intramedullary positioning method;The navigation group performed surgery using the Brainlab Knee 3 navigation system.Informed consent was signed after grouping. All patients were operated by the same knee prosthesis system. Both groups underwent the same procedures such as the installation of the soft tissue adjustment, prosthesis placement, wound closure and so on.All patients were given the same perioperative treatment, such as hemostasis, anti-infection and analgesia, and routine postoperative rehabilitation exercises. The full length anteroposterior and lateral radiographs of both lower extremities in weight-bearing position were taken preoperatively and one week postoperatively.The differences of postoperative alignment,operative time,blood loss will be studied between the two groups.Clinical and functional evaluation using the scoring system of HSS(Hospital for Special Surgery) score, Western Ontario and McMaster University osteoarthritis index (WOMAC), Forgotten joint score(FJS-12) will be compared between the 2 groups,after surgery, and at the follow-up of 3 months、6 months and 12 months.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 188
Est. completion date December 31, 2023
Est. primary completion date December 31, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 40 Years to 80 Years
Eligibility Inclusion criteria: 1. Patients with knee osteoarthritis who underwent primary TKA; 2. Informed consent has been signed and medical records are complete; 3. No severe varus or valgus deformity of the knee (< 20°). Exclusion criteria: 1. Patients undergoing revision knee replacement; 2. patients with rheumatoid arthritis and secondary knee osteoarthritis; 3. Patients with severe valgus deformity(= 20°); 4. Taking anticoagulant drugs for a long time in the past, or suffering from the following diseases: Renal insufficiency, liver insufficiency, severe heart disease (or coronary stent implantation within the last 12 months), severe respiratory disease, history of deep vein thrombosis in the lower extremities or a high risk of thrombosis (hereditary/acquired thrombosis), coagulation dysfunction, stroke, and malignancy

Study Design


Related Conditions & MeSH terms


Intervention

Device:
Brainlab Knee 3
Brainlab knee 3 navigation system is a kind of imageless computer-assisted navigation system.

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Peking University Third Hospital

Outcome

Type Measure Description Time frame Safety issue
Primary lower limb alignment knee-ankle angle (HKA) and components placement using coronal femoral-component angle (CFA) and coronal tibia- component angle (CTA)?sagittal femoral-component angle (SFA) and sagittal tibia-component angle(STA). Within 1 week after surgery
Secondary Operation time Time from skin incision to wound closure. Immediately after surgery
Secondary Blood loss Postoperative drainage volume refers to the drainage volume of the affected knee within 24 hours after the end of surgery, accurate to ml.Gross linear equation was used to calculate the total blood loss and latent blood loss at 3 days after surgery. 3 days after surgery
Secondary the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) The WOMAC is a self administered questionnaire to assess joint function and quality of life for patients with osteoarthritis; it consists of 24 items: pain (5 items), stiffness (2 items), and physical function (17 items). The higher the total score, the worse the patient's pain, stiffness, and functional limitations. The WOMAC is validated for various languages, including Chinese. 3 months?6 months and 12 months after surgery
Secondary HSS(Hospital for Special Surgery) score HSS(hospital for special surgery) score HSS(hospital for special surgery) score to evaluate patients postoperative knee joint function. With a total of 100, it has 7 subscales: 1.Pain 0~30; 2. Function 0~22; 3. Mobility 0~18; 4. Flexion deformity 0~10; 6. Stability 0~10; 7. Deduction Item. For each scale, a higher value represents a better outcome. The sum of the subscales is the total score. 6 months and 12 months after surgery
Secondary Forgotten Joint Score-12 (FJS-12) The FJS-12 is a PROM for patients who have undergone a TKA; it introduces the concept of a "forgotten" joint as the ideal objective to pursue in prosthetic surgery. It is composed of 12 items, measuring the patient's ability to forget the presence of an artificial joint in their daily life. For each item, there is a five-points Likert scale response. The raw results are converted to a 0-100 points scale. Highest score corresponds to good outcome with the patient not aware about the presence of the prosthesis. In the case of more than 4 answers are missing, the score should not be used . 6 months and 12 months after surgery
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