Accuracy of three-dimensional printed patient-specific drill guides for treatment of canine humeral intracondylar fissure.

Autor: Easter TG; Willows Referral Service, Solihull, United Kingdom., Bilmont A; Willows Referral Service, Solihull, United Kingdom., Pink J; Willows Referral Service, Solihull, United Kingdom., Oxley B; Willows Referral Service, Solihull, United Kingdom.
Jazyk: angličtina
Zdroj: Veterinary surgery : VS [Vet Surg] 2020 Feb; Vol. 49 (2), pp. 363-372. Date of Electronic Publication: 2019 Nov 12.
DOI: 10.1111/vsu.13346
Abstrakt: Objective: To determine the accuracy of three-dimensional printed patient-specific drill guides (3D-PDG) as treatment of humeral intracondylar fissures (HIF) in dogs.
Study Design: Retrospective consecutive case series.
Animals: Client-owned dogs with HIF treated with a 5-mm transcondylar screw (TCS) placed from medial to lateral with a 3D-PDG.
Methods: The proposed TCS entry point and trajectory were planned using computed tomography (CT) data and computer-aided design software (CAD), and a 3D-PDG was produced. During surgery the 3D-PDG was used to drill the pilot hole from medial to lateral; the guide was then removed, the pilot hole was overdrilled, and a 5-mm TCS was placed. Postoperative CT data were imported into CAD software, and the entry points, exit points, and trajectories were compared between the planned and actual screw locations.
Results: Sixteen elbows from 11 dogs were included. Mean (SD) entry point translation was 1.3 mm (0.64), with all screws entering cranial to the proposed location. Mean maximum screw angulation was 5.2° (2.10°), with most screws directed caudodistal to the desired trajectory. Mean (SD) exit point translation was 1.8 mm (0.89) from the planned location. There was no intra-articular screw placement.
Conclusion: Use of a 3D-PDG permitted accurate placement of a mediolateral 5-mm locking TCS within the humeral condyle.
Clinical Significance: Three-dimensional printed patient-specific drill guides should be considered as accurate and consistent for placing TCS for treatment of HIF in dogs.
(© 2019 The American College of Veterinary Surgeons.)
Databáze: MEDLINE
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