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The Outcome of the NexGen CR-Flex Mobile Bearing Knee Prosthesis:A multi centre non comparative prospective study

The Outcome of the NexGen CR-Flex Mobile Bearing Knee Prosthesis:A multi centre non comparative prospective study - NexGen CR-Flex Mobile Clinical Study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000005334
Enrollment
200
Registered
2011-03-28
Start date
2011-04-01
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

Severe knee pain and disability

Interventions

None listed

Sponsors

Zimmer K.K.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: -Patients which are indicated for total knee replacement surgery suffering from severe knee pain and disability due to degenerative joint disease including the following: osteoarthritis (OA), primary and secondary traumatic arthritis, avascular necrosis of the femoral condyle or pseudo gout, posttraumatic arthritis and varus, valgus, or flexion deformities. -Patient is in stable health and able to undergo surgery and participate in a follow-up program based upon physical examination and medical history. -Patient is willing and able to cooperate in follow-up program. -Patient or patient's legal representative has signed a Patient Informed Consent Form.

Exclusion criteria

Exclusion criteria: -Patient is skeletally immature. -Patient known to be pregnant. -Varus/valgus deformity with mechanical axis >20 degrees. -Fixed flexion deformity >15 degrees. -Patients with grossly insufficient femoral or tibial bone stock, e.g., due to osteoporosis, metabolic bone disease, congenital anomaly, or previous surgery to the index joint that could affect outcome. -Patients with previously failed knee endoprosthesis of any kind. -Patients with a previous history of infection in the affected joint. -Patient is unwilling or unable to cooperate in a follow-up program.

Design outcomes

Primary

MeasureTime frame
Clinical outcomes evaluated by the Knee Society assessment scoring system

Secondary

MeasureTime frame
-The functional outcome evaluated by the Knee Society functional scoring system -Radiographic outcome evaluated by anterial -posterial and medial-lateral radiographs -Patient's general health status assessment using the Euro-Qol-5D scoring system (EQ-5D) -The survivorship meaning that the prosthesis has not been explanted, nor is a revision planned or pending

Countries

Japan,Europe

Contacts

Public ContactAkira Kashima

Zimmer K.K. Clinical Affairs

akira.kashima@zimmer.com03-6402-6610

Outcome results

None listed

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