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Erschienen in: International Orthopaedics 12/2018

02.07.2018 | Original Paper

Proper benefit of a three dimensional pre-operative planning software for glenoid component positioning in total shoulder arthroplasty

verfasst von: Adrien Jacquot, Marc-Olivier Gauci, Jean Chaoui, Mohammed Baba, Pierric Deransart, Pascal Boileau, Daniel Mole, Gilles Walch

Erschienen in: International Orthopaedics | Ausgabe 12/2018

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Abstract

Purpose

Glenoid loosening after total shoulder arthroplasty (TSA) is influenced by the position of the glenoid component. 3D planning software and patient-specific guides seem to improve positioning accuracy, but their respective individual application and role are yet to be defined. The aim of this study was to evaluate the accuracy of freehand implantation after 3D pre-operative planning and to compare its accuracy to that of a targeting guide.

Method

Seventeen patients scheduled for TSA for primary glenohumeral arthritis were enrolled in this prospective study. Every patient had pre-operative planning, based on a CT scan. Glenoid component implantation was performed freehand, guided by 3D views displayed in the operating room. The position of the glenoid component was determined by manual segmentation of post-operative CT scans and compared to the planned position. The results were compared to those obtained in a previous work with the use of a patient-specific guide.

Results

The mean error for the central point was 2.89 mm (SD ± 1.36) with the freehand method versus 2.1 mm (SD ± 0.86) with use of a targeting guide (p = 0.05). The observed difference was more significant (p = 0.03) for more severely retroverted glenoids (> 10°). The mean errors for version and inclination were respectively 4.82° (SD ± 3.12) and 4.2° (SD ± 2.14) with freehand method, compared to 4.87° (SD ± 3.61) and 4.39° (SD ± 3.36) with a targeting guide (p = 0.97 and 0.85, respectively).

Conclusion

3D pre-operative planning allowed accurate glenoid component positioning with a freehand method. Compared to the freehand method, patient-specific guides slightly improved the position of the central point, especially for severely retroverted glenoids, but not the orientation of the component.
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Literatur
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Metadaten
Titel
Proper benefit of a three dimensional pre-operative planning software for glenoid component positioning in total shoulder arthroplasty
verfasst von
Adrien Jacquot
Marc-Olivier Gauci
Jean Chaoui
Mohammed Baba
Pierric Deransart
Pascal Boileau
Daniel Mole
Gilles Walch
Publikationsdatum
02.07.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
International Orthopaedics / Ausgabe 12/2018
Print ISSN: 0341-2695
Elektronische ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-018-4037-1

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