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All-Polyethylene versus Metal-Backed Total Knee Joint Replacements in patients with osteoarthritis

What are post-operative functional and clinical outcome differences between all-polyethylene and metal-backed tibial implants for knee joint replacements in patients with osteoarthritis?

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12610000360011
Enrollment
300
Registered
2010-05-06
Start date
2010-07-01
Completion date
Unknown
Last updated
2020-01-13

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

Conditions

None listed

Interventions

Randomised insertion of All-polyethylene tibial implant or metal-backed implant. The control (metal-backed implant) would involve a metal tibial implant which would require an all-polyethylene insert. The all-polyethylene implant incorporates the usual polyethylene insert to the tibial implant, becoming an 'all-poly' tibial implant. The procedure (total knee joint replacement) takes approximately 90 minutes, regardless of the implant used. Total knee joint replacements can last up to and beyond

Randomised insertion of All-polyethylene tibial implant or metal-backed implant. The control (metal-backed implant) would involve a metal tibial implant which would require an all-polyethylene insert. The all-polyethylene implant incorporates the usual polyethylene insert to the tibial implant, becoming an 'all-poly' tibial implant. The procedure (total knee joint replacement) takes approximately 90 minutes, regardless of the implant used. Total knee joint replacements can last up to and beyond 10 years, or until any component fails.

Sponsors

Georgina Chan
Lead SponsorIndividual

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
60 Years to No maximum
Healthy volunteers
No

Inclusion criteria

All patients offered total knee joint replacement at participating hospital

Exclusion criteria

Patients requiring complex surgery (e.g. involving grafting, augments). Patients with previous infection in the knee joint to be replaced. Patients not consenting to participation.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026