International Orthopaedics

, Volume 37, Issue 6, pp 995–999 | Cite as

Pooled outcome of total hip arthroplasty with the CementLess Spotorno (CLS) system: a comparative analysis of clinical studies and worldwide arthroplasty register data

  • Patrick Sadoghi
  • Wolfgang Janda
  • Mark Agreiter
  • Rauend Rauf
  • Andreas Leithner
  • Gerold Labek
Original Article



Our aim was to elucidate the pooled outcome of the CementLess Spotorno (CLS) system in total hip arthroplasty (THA).


We compared the outcome of clinical inventor studies, independent clinical studies, and worldwide register data. The main endpoints for analysis were revision rates.


Twenty clinical studies were evaluated and, with one exception, overall found revision rates largely in line with register data. Revision rates (revisions per 100 observed component years) range from 0.15 (inventor study) to 0.28 (independent studies) and 0.43 (register datasets).


Data of journal publications and register datasets using the CLS system do not differ significantly with respect to revision rates. Only the initial inventor study reports a revision rate three times lower than in pooled worldwide register datasets.


Revision Rate Inventor Study Arthroplasty Register Register Dataset Joint Replacement Registry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Patrick Sadoghi
    • 1
  • Wolfgang Janda
    • 2
  • Mark Agreiter
    • 2
  • Rauend Rauf
    • 2
  • Andreas Leithner
    • 1
  • Gerold Labek
    • 2
  1. 1.Department of Orthopaedic SurgeryMedical University of GrazGrazAustria
  2. 2.Department of Orthopaedic SurgeryInnsbruck Medical UniversityInnsbruckAustria

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