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Safety and Performance Study of the Legion Porous System in Total Knee Arthroplasty

Multi-center Study of the Safety and Performance of Primary Total Knee Arthroplasty With LEGION™ Porous HA Tibial Baseplates (With and Without Holes) and/or the LEGION™ Porous HA CR Femoral Component in US Centers

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT03720782
Enrollment
118
Registered
2018-10-25
Start date
2019-05-22
Completion date
2032-12-31
Last updated
2026-04-23

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

Conditions

Total Knee Arthroplasty

Keywords

Legion

Brief summary

The purpose of this research is to collect data on patients that had the Legion Porous HA Tibial Baseplates and/or the Legion Porous HA Femoral component implanted in the past. Smith & Nephew will evaluate the safety and performance of these implants for 10 years post-surgery.

Interventions

DEVICELEGION Porous HA Tibial Baseplate and/or the LEGION Porous HA CR Femoral Component

LEGION Porous HA Tibial Baseplate (with and without holes) and/or the LEGION Porous HA CR Femoral Component

Sponsors

Smith & Nephew, Inc.
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
OTHER

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Subject received primary TKA with the LEGION Porous HA Tibial Baseplates (either with holes or without holes) and/or the LEGION Porous HA CR Femoral Component, due to degenerative joint disease (primary diagnosis of osteoarthritis, post-traumatic arthritis, or degenerative arthritis). 2. Subject received primary TKA between 24 and 60 months prior to the time of consent. Inclusion criteria for prospective follow-up (subjects must meet criteria 1 \& 2 from above and criteria 3,4 and 5 below): 3. Subject agrees to consent and to follow the prospective study visit schedule (as defined in the study protocol and informed consent form) by signing the IRB/IEC approved informed consent form. 4. Subject must be available through ten (10) years postoperative follow-up. 5. Subject is able to read, understand, and communicate responses to Patient Reported Outcome assessments in English.

Design outcomes

Primary

MeasureTime frame
Implant survivorship 10 years post-surgery10 years

Secondary

MeasureTime frameDescription
Quality of life - KOOS JR10 yearsPatient Reported Outcomes using Knee Injury and Osteoarthritic Outcome Scores (KOOS JR) questionnaire
Quality of Life - Forgotten Joint Score (FJS)10 yearsPatient Reported Outcomes using Forgotten Joint Score (FJS) questionnaire
Quality of life - EQ-5D-5L10 yearsPatient Reported Outcomes using EuroQol Five Dimensions Questionnaire (EQ-5D - 3L) questionnaire
Implant survivorship5 yearsImplant Survivorship at 5 years defined as the cumulative proportion of knee-implanted components without a revision
Radiographic findings10 yearsX-ray of implanted knee- 3 views (AP, Lateral and Skyline/Merchant) to observe any radiographic findings that may include; Heterotopic ossification, oteolysis, femoral notching, evidence of poly wear, radiolucencies.

Countries

United States

Contacts

STUDY_CHAIRKarlie Morgan

Smith & Nephew, Inc.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 24, 2026