Brief Summary

This randomised controlled trial will include patients with end-stage osteoarthritis of the knee undergoing primary TKR. Patients meeting the criteria that consent to be in the study will be randomised at a ratio of 1:1 to either Velys J\&J robotic-assisted or Cori S\&N robotic-assisted TKR. The primary objective will assess pre- and postoperative HKA angle, CPAK and range of motion using goniometer to compare two groups.The secondary objectives are to compare patient expectation, functional ability, quality of life using functional 48-point Oxford Knee Score and Forgotten joint score.

Trial Health

On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment

200

participants targeted

Target at P75+ for all trials

Timeline

10mo left

Started Jan 2026

Geographic Reach

1 country

1 active site

Status

enrolling by invitation

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

1.2 years study duration

Study Progress30%

Jan 2026Mar 2027

Study Start

First participant enrolled

January 1, 2026

Completed

9 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 10, 2026

Completed

3 months until next milestone

First Submitted

Initial submission to the registry

April 21, 2026

Completed

7 days until next milestone

First Posted

Study publicly available on registry

April 28, 2026

Completed

10 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2027

Expected

Last Updated

April 28, 2026

Status Verified

April 1, 2026

Enrollment Period

9 days

First QC Date

April 21, 2026

Last Update Submit

April 21, 2026

Conditions

Knee Arthritis Osteoarthritis

Outcome Measures

Primary Outcomes (3)

1. HKA angle
before and 3,6,12 after surgery
CPAK
before and 3,6,12 months after surgery
range-of-motion
before and 3,6,12 moths after surgery

Secondary Outcomes (2)

Oxford Knee Score
before and 3,6,12 months after surgery
Forgotten Joint Score
before and 3,6,12 moths after surgery

Study Arms (2)

Velys J&J robotic assisted TKA

We prepare TKA using Velys J\&J robotic arm

Other: preoperative HKAOther: preoperative CPAKOther: preoperative Oxford Knee ScoreOther: preoperative Forgotten Joint ScoreOther: preoperative range-of-motionOther: postoperative HKAOther: postoperative CPAKOther: postoperative range-of-motionOther: postoperative Oxford Knee ScoreOther: postoperative Forgotten Joint Score

Cori S&N robotic assisted TKA

We prepare TKA using Cori S\&N robotic arm