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Is There Increased Polyethylene Wear and Increased Periprosthetic Bone Loss in Femur in Reverse Hybrid Technique Compared With Conventional Cemented Technique in Total Hip Replacement?

NCT00526539 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL

Last updated 2011-07-06

No results posted yet for this study

Summary

Total hip replacement is a very cost effective procedure to enhance life quality in a group of patients. In the period 2000-2004 7-8000 procedures were preformed, 13% were revisions (1). Historically, many different principles have been used from the first resurfacings to cemented and uncemented total hip replacements as we know them today. In 2000, 28 different femoral stems and 26 different acetabular components were in regular use in Norway. There are several well-documented cemented acetabular components, but no such uncemented cup. On the femoral side there are several well-documented stems both cemented and uncemented. (2).

From the late 1990's a reverse hybrid (uncemented stem and cemented cup) is being more frequently used. In 2004 a total of 276 reverse hybrid hips were done and the trend is increasing. (1). This technique is solely based on experience and the fact that one combines the better of two principles (cemented and uncemented). There is no scientific evidence that this technique is as good or better than a cemented THR.

One of the potential problems with hydroxyapatite coated components is that it is suspected that it may increase wear due to the particle theory. (3,4). There are no prospective randomised controlled RSA and DXA studies that conclude on this matter. This is such a study and our hypothesis is that there is no difference in wear or osteolysis between the methods.

Conditions

Interventions

OTHER

Total hip replacement, Spectron and Taperloc

Sponsors & Collaborators

  • Ullevaal University Hospital

    lead OTHER

Principal Investigators

  • Lars Nordsletten, professor, MD, Ph.D · Ullevål University Hospital, N-0407 Oslo

  • Einar Lindalen, MD · Lovisenberg Hospital, N- 0440 Oslo

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
PARALLEL

Eligibility

Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00526539 on ClinicalTrials.gov