Interactive Surgery

, Volume 2, Issue 3–4, pp 197–205 | Cite as

Good results with an uncoated grit-blasted tapered straight stem at ten years

  • K. ZweymüllerEmail author
Original Article


In the literature, there is no consensus on the value of uncoated cementless femoral stems. We asked whether the results obtained with a grit-blasted titanium surface would prove the usefulness of this implant at an intermediate follow-up time. Three hundred and sixty five patients (376 hips) underwent primary total hip arthroplasty (THA) using the SL-Plus stem in combination with a ceramic-PE articulation. At a minimum follow-up time of 10.0 years (mean 10.2 years; range, 10.0 to 12.6 years), 229 stems (60.9%) were available for analysis. Five revisions were performed, one because of low-grade infection, one because of an aseptic loosening, another one because of a traumatic subsidence and two because of periprosthetic fractures. The 10-year survivorship with revision for any reason as event of interest was 98.3% (95% CI: 96.0%–99.3%). Radiologically two stems were diagnosed to be loosened at follow-up. Osteolytic lesions were detected in 5 patients. The implant survivorship with revision and radiographic sign of loosening as event of interest was 95.7% (95% CI: 89.0%–98.4%) at the time of maximum follow-up (12.6 years). Radiolucent lines (RLs) occurred in 27.9% mostly in positions 1 and 7. In the age group less than 70 years of age, 35% were found to show RLs, in the age group older than 70 years of age only 12.5% showed RLs. The five patients with osteolytic lesions were all from the age group ≤ 70 years. These intermediate results document that primary implants with a grit-blasted titanium surface ensure an excellent intermediate-term outcome clinically and with regards to the survival rate. It also confirms our approach not to accept any age limits for selecting patients for cementless THAs. A prospective study will have to show whether additional hydroxyapatite (HA)-coating can improve the radiologic outcome.


Hip arthroplasty Cementless Grit-blasted stems 


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Copyright information

© Springer Paris 2007

Authors and Affiliations

  1. 1.Orthopädisches Krankenhaus GersthofWienGermany

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