Evaluation of proper implant positioning of total knee arthroplasty

JRCT ID: jRCT1052210124

Registered date:24/11/2021

Basic Information

• Recruitment status: Recruiting
• Health condition(s) or Problem(s) studied: Osteoarthritis of Knee , osteonecrosis of knee , rheumatoid arthritis
• Date of first enrollment: 24/11/2021
• Target sample size: 20
• Study type: Interventional
• Intervention(s): The implant trial was conducted using (1) a standard insert trial (conventional instrument) and (2) an insert trialthat provides a position similar to that of a healthy knee joint. (new instrument) The positional posture and intraoperative dynamics between the femur and tibia during the passive ROM movement were recorded by the Navigation System. In addition, internal and external rebound stresses will be applied and the distance between the joints will be measured.

Outcome(s)

• Primary Outcome: The positional posture and intraoperative dynamics between the femur and tibia during the passive ROM movement were recorded by the Navigation System. In addition, internal and external rebound stresses will be applied and the distance between the joints will be measured.

Key inclusion & exclusion criteria

• Age minimum: >= 20age old
• Age maximum: Not applicable
• Gender: Both
• Include criteria: Patients who are eligible for posterior cruciate ligament retaining total knee arthroplasty

Exclude criteria

Patients for whom the Navigation System is deemed unusable
Patients in whom it is judged that the posterior cruciate ligament cannot be preserved intraoperatively

Related Information

• Primary Sponsor: Tomita Tetsuya