Sensor of total hip arthoplasty wear designed on principle of scanning profilometry

Tomas Rössler; Dusan Mandat; Jiri Gallo; Miroslav Hrabovsky; Michal Pochmon; Vitezslav Havranek

doi:10.1117/12.822395

20 November 2008 Sensor of total hip arthoplasty wear designed on principle of scanning profilometry

Tomas Rössler, Dusan Mandat, Jiri Gallo, Miroslav Hrabovsky, Michal Pochmon, Vitezslav Havranek

Proceedings Volume 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 71411E (2008) https://doi.org/10.1117/12.822395
Event: 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2008, Polanica Zdroj, Poland

Abstract

Total hip arthroplasty significantly improves the quality of life in majority of patients with osteoarthritis. However, prosthetic wear is a problem because of inducing the development of aseptic loosening and periprosthetic osteolysis which needs the revision surgery. Thus, the polyethylene wear measurement is the central to contemporary orthopaedics and this interesting has encouraged the development and improvement of both radiologic (in vivo) and non-radiologic (in vitro) methods for polyethylene wear quantification. The principles of polyethylene liner wear measurements are predominantly geometric; nevertheless, the realization of individual types of in vivo measurements brings with it the necessity of many simplifications and compromising steps to acquire approximately accurate values. In fact, the volumetric wear can be obtained by mathematical conversion based on the most linear shift of femoral head in the cup. However, such approach is understood to be somewhat insufficient. Our ongoing research pointed to the development of optical non-contact method for wear measurement and its results are introduced in this paper including the methodology designed for the usability validation of the method for the given purpose and the description of sensor, its principle, technical realization, design and parameters.

Citation Download Citation

Tomas Rössler, Dusan Mandat, Jiri Gallo, Miroslav Hrabovsky, Michal Pochmon, and Vitezslav Havranek "Sensor of total hip arthoplasty wear designed on principle of scanning profilometry", Proc. SPIE 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 71411E (20 November 2008); https://doi.org/10.1117/12.822395

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KEYWORDS

Sensors

In vivo imaging

3D scanning

Head

Image analysis

In vitro testing

Spherical lenses

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