Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Stihsen, C; Rath, C; Radl, R; Saalabian, AA; Materna, W; Rehak, P; Windhager, R.
Early migration characteristics of a 180° porous-coated cup with 1-mm press fit.
Arch Orthop Trauma Surg. 2013; 133(5):707-712
Doi: 10.1007/s00402-013-1713-x
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- Co-Autor*innen der Med Uni Graz
- Materna Wilfried
- Radl Roman
- Rehak Peter
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- Abstract:
- Evaluation of early cup movement is an important diagnostic tool to predict the likelihood of long-term implant loosening and clinical failure. The investigated cementless cup is clinically proven over 10 years, but there is a paucity of information that accurately describes the migration characteristics of this component. We retrospectively analysed the clinical outcome and migration behaviour of 60 Pinnacle 100 shells after an average 3.8-year follow-up (range 2.1-5.4 years). For migration measurement, EBRA (Einzel-Bild-Röntgen-Analyse) digital software was applied. Clinical assessment was performed using the HHS, the UCLA score and the SF-36 health survey. The clinical outcome showed excellent results with a mean HHS of 95.4 (SD 7.1) and mean UCLA of 6.9 (SD 1.3). All implants were radiologically stable within the observation period and none of the cups was at risk for aseptical loosening. EBRA analysis revealed a mean total migration of 1.4 mm (SD 0.9) (95 % CI 1.1-1.6) at 3 years. Eight cups migrated more than 1 mm within the first three postoperative months, thereafter the migration curves flattened down. Surgeons may expect to find a variable amount of early migration when using the Pinnacle cup. To our knowledge, these are the first results, which show an early "impaction" of a cementless cup, followed by subsequent osseointegration. We believe that an appropriate long-term outcome of the investigated cup is ensured. The data of the present investigation will provide clinicians with useful baseline information with which to compare new cup designs.
- Find related publications in this database (using NLM MeSH Indexing)
- Acetabulum - surgery
- Aged -
- Aged, 80 and over -
- Arthroplasty, Replacement, Hip -
- Female -
- Hip Joint - surgery
- Hip Prosthesis -
- Humans -
- Joint Diseases - surgery
- Male -
- Middle Aged -
- Osseointegration -
- Prosthesis Design -
- Prosthesis Failure -
- Retrospective Studies -
- Find related publications in this database (Keywords)
- Total hip arthroplasty
- Cementless
- Migration analysis
- EBRA