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Validation of patient specific surgical guides in total hip arthroplasty
Author(s) -
Sakai Takashi,
Hanada Toshihisa,
Murase Tsuyoshi,
Kitada Makoto,
Hamada Hidetoshi,
Yoshikawa Hideki,
Sugano Nobuhiko
Publication year - 2014
Publication title -
the international journal of medical robotics and computer assisted surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 53
eISSN - 1478-596X
pISSN - 1478-5951
DOI - 10.1002/rcs.1547
Subject(s) - medicine , cadaveric spasm , impaction , total hip arthroplasty , coronal plane , hip resurfacing , surgery , arthroplasty , nuclear medicine , orthodontics , radiology
Background The validation of patient‐specific surgical guides (PSGs) by their design and the comparison of planned and actual PSG setting in total hip arthroplasty (THA) have not previously been reported. Methods The errors between preoperative planning and computed tomography (CT)‐based PSG setting (E1), and between preoperative planning and implantation (E2) were evaluated using CT in 16 fresh cadaveric hips. Results E2 was significantly smaller with the wide‐base‐contact resurfacing‐THA PSG than with the narrow‐base‐contact type ( P < 0.05). E1/E2 of the wide‐base‐contact neck‐cut PSG was 1.6 ± 0.7°/2.4 ± 1.1° for the coronal plane and 1.2 ± 0.8 mm/0.7 ± 0.5 mm for the medial neck‐cut height. E1/E2 of the wide‐base‐contact cup‐impaction PSG was 1.0 ± 0.9°/3.4 ± 1.9° for inclination and 1.7 ± 1.1°/6.6 ± 4.4° for anteversion. Conclusions The wide‐base‐contact PSG in resurfacing‐THA and the PSG for neck‐cut in THA could be applied clinically. Although cup‐impaction PSG setting was acceptable, errors were made due to the impaction process during cup implantation. Copyright © 2013 John Wiley & Sons, Ltd.