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A comparison of of partially coated or completely coated hip replacement stems for patients with osteoarthritis

A prospective, multicenter, randomized migration study of the Anthology cementless femoral stem in patients with degenerative hip disease

Status
Withdrawn
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12609000932268
Enrollment
40
Registered
2009-10-29
Start date
2009-11-01
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

Brief summary

The purpose of this clinical study is to determine the predicted long-term safety and effectiveness of the anthology cementless femoral stem using an RSA technique to yield early results in small numbers of patients. The secondary purpose of this study is to assess the efficacy of fully coating this stem with hydroxyapatite (HA) compared to a proximally-HA coated stem.

Interventions

prospective controlled trial comparing partially coated cementless stem to fully hydroxyapatite (HA) coated cementless stem. cementless stems utilise a fixation surface to optimise the fixation to bone. In this design the proximal end of the stem has a macro texture with a titanium coating. Hydroxyapatite is applied to the proximal coating or the full length of the stem to enhance initial fixation. Patients enrolled in this study will have their surgery during a 12 month recruitment period.

prospective controlled trial comparing partially coated cementless stem to fully hydroxyapatite (HA) coated cementless stem. cementless stems utilise a fixation surface to optimise the fixation to bone. In this design the proximal end of the stem has a macro texture with a titanium coating. Hydroxyapatite is applied to the proximal coating or the full length of the stem to enhance initial fixation. Patients enrolled in this study will have their surgery during a 12 month recruitment period. The operation takes approximately 1 hour. Patients will be studied for two years following their surgery and will return for routine follow-up thereafter.

Sponsors

David Campbell
Lead SponsorIndividual

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used)

Eligibility

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

Inclusion criteria

hip osteoarthritis

Exclusion criteria

non-osteoarthritis hip disease

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026