Evaluation of proper implant positioning of total knee arthroplasty

Evaluation of proper implant positioning by intraoperative insert trial of total knee arthroplasty ~pilot study~

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT1052210124

Enrollment

Registered

2021-11-24

Start date

2021-11-24

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Osteoarthritis of Knee , osteonecrosis of knee , rheumatoid arthritis Osteoarthritis of Knee

Interventions

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) T

D010865

pilot study

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who are eligible for posterior cruciate ligament retaining total knee arthroplasty

Exclusion criteria

Exclusion 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

Design outcomes

Primary

Measure	Time frame
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.	—

Contacts

Public ContactMasashi Tamaki

Osaka University

m-tamaki@hacc.osaka-u.ac.jp+81-6-6850-6015

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026