Comparison of the Radiologic and Clinical Outcomes of Patellar in Restricted Kinematic Alignment and Mechanical Alignment in Bilateral Total Knee Arthroplasty Patients, A Randomized Controlled Trial

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

TCTR

Registry ID

TCTR20240923004

Enrollment

Registered

2024-09-23

Start date

2024-10-02

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

1. To study the effect of restricted kinematic alignment TKA and mechanical alignment TKA on patella tilt angle after bilateral total knee arthroplasty using radiographic evaluation immediately after surgery. 2.To study the postoperative clinical scores of the knee (KOOS, FJS, EQ 5D 5L) by comparing Mechanical alignment and Restricted kinematic alignment surgery in bilateral knee replacement surgery at Rajavithi Hospital at 3 and 6 months postoperatively and follow-up. As for VAS score at 3 da

Interventions

restricted Kinematic Alignment TKA surgery is developed from unrestricted Kinematic Alignment (KA), which is a surgical procedure to maintain the knee in its original anatomical form prior to patholog

Experimental Procedure/Surgery,Experimental Procedure/Surgery

Restricted Kinematic Alignment TKA,Mechanical Alignment TKA

Eligibility

Sex/Gender

All

Age

60 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Patients who will undergo total knee replacement surgery due to bilateral knee osteoarthritis , 2.Received total knee arthroplasty both knees in a single operation, 3.Cemented knee surgery and using PS design, 4.Would like to participate in the research, 5.Patients aged > 60 years old

Exclusion criteria

Exclusion criteria: 1.History of knee and pelvic surgery, 2.History of knee osteotomy or Uni-compartmental Knee Arthroplasty, 3.Bone pathology greater than 5 mm, 4.Pregnancy, 5.History of fractures around the knee, 6.During the first surgery, there were complications that caused the surgery to be stopped and the second surgery could not be performed, 7.During the surgery, there was a patella resurfacing, 8.Infection of the knee, and 9.Cancer of the knee

Design outcomes

Primary

Measure	Time frame
Patella tilt angle 1 day after surgery Determine the angle from the widest point of the patella to the anterior surface of the femoral condyle from x-ray.	—

Secondary

Measure	Time frame
Pain Visual Analog Scale (VAS) After surgery 3 days, 3 months, or 6 months Pain score 0-10,Knee Injury And Osteoarthritis Outcome Score After surgery 3 months, 6 monts. Score,Knee Forgotten Joint Score After surgery 3 months, 6 monts Score,Complication after surgery After surgery 3 months, 6 monts. Numbers of complications	—

Countries

Thailand

Contacts

Public ContactKamonnop Sahasoonthorn

Rajavithi hospital

Tungkamonnop@gmail.com66636424152

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026