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Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
[Results of cement-free implanted, Robert Mathys isoelastic acetabular cup]
L C Olivier1, F Neudeck, C Hippel
1Abteilung für Unfallchirurgie des Universitätsklinikums, Gesamthochschule Essen.
Unfallchirurgie
|June 2, 1998
Summary
Cement-free isoelastic acetabular cups showed good results in older patients with femoral neck fractures. This hip implant procedure is not recommended for younger individuals due to potential loosening risks.
Area of Science:
- Orthopedic surgery
- Biomaterials science
Background:
- Acetabular cup implantation is a common procedure for hip joint issues.
- Cement-free implants offer potential advantages over cemented alternatives.
- Assessing the long-term efficacy of cement-free isoelastic acetabular cups is crucial.
Purpose of the Study:
- To evaluate the clinical outcomes and survival rates of cement-free isoelastic acetabular cups.
- To determine the suitability of this implant type for different patient age groups.
Main Methods:
- Retrospective analysis of 172 cement-free isoelastic acetabular cup implantations in 163 patients.
- Follow-up of 72 cups in 67 patients for an average of 6.0 years.
- Assessment of outcomes using the Harris-hip score and evaluation of cup loosening rates.
Main Results:
- An average patient age of 72.6 years.
- 68.1% of hips achieved "very good" to "fair" results based on the Harris-hip score.
- A low cup loosening rate of 3.5% was observed, potentially linked to reduced physical activity in older patients.
Conclusions:
- Cement-free isoelastic acetabular cups are effective for older patients, particularly those with femoral neck fractures.
- The procedure is not advised for younger patients due to the risk of symptomatic loosening after 8 years.
- Long-term follow-up indicates a favorable outcome profile in the elderly population.
