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Post Market Clinical Follow-Up Study for EVOLUTION® NitrX™ Keeled Tibia and EVOLUTION® NitrX™ CS/CR Femur With Cruciate Sacrificing Insert

Post Market Clinical Follow-Up Study for EVOLUTION® NitrX™ Keeled Tibia and EVOLUTION® NitrX™ CS/CR Femur With Cruciate Sacrificing Insert

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07391592
Acronym
NitrX
Enrollment
100
Registered
2026-02-06
Start date
2025-08-18
Completion date
2032-12-31
Last updated
2026-02-06

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

Conditions

Arthritis Knee, Avascular Necrosis, Joint Diseases, Osteoarthitis, Rheumatoid Arthritis of Knee

Brief summary

MicroPort Orthopedics Inc. (MPO) plans to market the EVOLUTION® NitrX™ Non-Porous Keeled Tibia and EVOLUTION® NitrX™ CS/CR Non-Porous Femur with the EVOLUTION® Cruciate Sacrificing (CS) Tibial Insert globally, including in the European Union (EU). MPO is conducting this post market clinical follow-up (PMCF) study to evaluate the safety and effectiveness of the EVOLUTION® NitrX™ Non-Porous Keeled Tibia and EVOLUTION® NitrX™ CS/CR Non-Porous Femur. These components are used along with the EVOLUTION® Cruciate Sacrificing (CS) Tibial Insert components that is marketed in the European Union (EU). This type of data collection is required by regulatory authorities for all TKA devices that do not have medium to long-term clinical evidence available.

Interventions

EVOLUTION® NitrX™ Keeled Tibia and EVOLUTION® NitrX™ CS/CR Femur With Cruciate Sacrificing Insert

Sponsors

MicroPort Orthopedics Inc.
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

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

Inclusion criteria

* Subjects \> 18 years of age at the time of surgery * Subjects who were implanted with the Evolution® NitrX (SKU # listed below) in MicroPort Orthopedics' intended patient population listed within the Instructions for Use (IFU). * Willing and able to participate in clinical study

Exclusion criteria

* Subjects without follow-up history * Subjects not meeting the inclusion criteria * Contraindications as listed in the IFU * Currently enrolled in another study that could affect the endpoints of this protocol.

Design outcomes

Primary

MeasureTime frameDescription
Knee Injury and Osteoarthritis Outcome Score- Joint Replacement (KOOS JR)10 yearsKOOS is a validated patient-reported outcome measure designed to assess short- and long- term symptoms and functions in individuals with knee injuries and osteoarthritis. It is a 42-item questionnaire. KOOS JR is its short form, developed using Rasch analysis to provide a more efficient tool for clinical and research use. It has 7 items which measure pain, stiffness and function in daily life. Each item is scored from 0 (none) to 4 (extreme). The raw score (0-28) is converted to an interval score ranging from 0 to 100, where 100 indicates the best health and 0 means the worst health.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORAlexander Sah, MD

Sah Orthopaedic Associates, Fremont, California, United States 94538

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 7, 2026