Optical 3D methods for measurement of prosthetic wear of total hip arthroplasty: principles, verification and results.
Total hip arthroplasty (THA) significantly improves the quality of life in majority of patients with severe osteoarthritis. However, long-term outcomes of THAs are compromised by aseptic loosening and periprosthetic osteolysis which needs revision surgery. Both of these are causally linked to a prosthetic wear deliberated from the prosthetic articulating surfaces. As a result, there is a need to measure the mode and magnitude of wear. The paper evaluates three optical methods proposed for construction of a device for the non-contact prosthetic wear measurement. Of them, the scanning profilometry achieved promising combination of accuracy and repeatability. Simultaneously, it is time efficient to enable the development of a sensor for wear measurement.
Rossler
Tomas
T
Dept. of Exp. Physics, Fac. of Sci., Palacky Univ./Olomouc, 17th Listopadu 50a, 772 07 Olomouc, Czech Rep. tomas.rossler@upol.cz
Mandat
Dusan
D
Gallo
Jiri
J
Hrabovsky
Miroslav
M
Pochmon
Michal
M
Havranek
Vitezslav
V
D000465:Algorithms; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005583:Fourier Analysis; D006622:Hip Prosthesis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008853:Microscopy / Q000379:methods; D008962:Models, Theoretical; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010014:Osteolysis; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D015203:Reproducibility of Results; D012984:Software