Low accuracy of stem implantation in THR using the CASPAR-systemAnteversion measurements in 10 hips

Authors

  • Farhad Mazoochian
  • Christoph Pellengahr
  • Armin Huber
  • Jörn Kircher
  • Hans Jürgen Refior
  • Volkmar Jansson

DOI:

https://doi.org/10.1080/00016470410001178

Abstract

We studied 10 patients by means of pre- and postoperative CT who underwent computer-assisted total hip replacement using the CASPAR-system (OrthoMaquet GmbH, Rastatt, Germany).The anteversion angles of the stem and translational deviations measured after surgery were compared to the preoperatively planned ones as a quality control. We found an average difference of 7.8° (SD 6.3°; 95% CI 3.3°–12.3°) in the angles and an average difference of 1.8 (SD 1.7; 95% CI 0.6–3.0) mm and 1.2 (SD 1.4: 95% CI 0.25–2.2), respectively, in the medial and lateral deviation.In conclusion, we could not confirm the same accuracy of implant position as that claimed by the manufacturer.

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Published

2004-01-01

How to Cite

Mazoochian, F., Pellengahr, C., Huber, A., Kircher, J., Refior, H. J., & Jansson, V. (2004). Low accuracy of stem implantation in THR using the CASPAR-systemAnteversion measurements in 10 hips. Acta Orthopaedica, 75(3), 261–264. https://doi.org/10.1080/00016470410001178