Clinical study on wear resistance of highly cross-linked polyethylene (Longevity)

Clinical study on wear resistance of highly cross-linked polyethylene (Longevity) - Longevity study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000006013

Enrollment

200

Registered

2011-07-31

Start date

2010-04-01

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

Osteoarthritis of the hip

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who underwent total hip arthroplasty using either Longevity or Trilogy poly-liner between October 2000 and May 2003. Patients who fulfilled the following inclusion criteria at the time of total hip arthroplasty: -Primary disease: hip osteoarthritis -Age: 70 years or younger -Patients with stable health conditions based on the physical examination and medical history

Exclusion criteria

Exclusion criteria: Patients who did not violate any of the following exclusion criteria at the time of total hip arthroplasty: -Patients with a history of infection at the affected joint -Patients with immature skeleton -Patients with a history of total hip arthroplasty at the affected joint (cases of revision) -Patients with a history of alcohol or drug addiction, for whom poor compliance is expected

Design outcomes

Primary

Measure	Time frame
To compare the wear resistance of the polyethylene liner	—

Secondary

Measure	Time frame
JOA score, SF-12	—

Countries

Japan

Outcome results