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Objectives:
To determine the effect of the Vertek aiming device (VAD) on the surgical accuracy of navigated drilling of the distal sesamoid bone (DSB).
Methods:
Thirty paired equine cadaveric limbs from 15 horses were included. Each specimen was placed in a purpose-built frame (PBF). Preoperative cone beam computed tomography (CBCT) images were acquired with an imaging unit coupled with a surgical navigation system. In the DSB of each specimen, a 4.5 mm glide hole and a 3.2 mm thread hole were drilled under navigation guidance, to simulate drilling for the repair of a mid-sagittal DSB fracture. In the VAD group navigated drilling was assisted by using the VAD. In the free-hand drilling group navigated drilling was performed without the VAD. Pre-and postoperative CBCT scans were merged and surgical accuracy aberrations (SAA) between the planned drill corridor and the created bone tunnel were measured. Descriptive statistics and repeated-measures analyses of variance (rep.-meas. ANOVA) were performed to compare SAA measurements between the study groups.
Results:
The SAA measurements ranged from 0 mm to 2.9 mm in the free-hand group and from 0 mm to 2.8 mm in the VAD group. The median overall SAA was lower in the VAD group than in the free-hand navigated group (0.6 mm ± (0.5 – 0.7) vs 0.8 mm ± (0.7 – 1), rep.-meas. ANOVA p = 0.007).
Conclusions:
The combined use of the VAD and PBF may help improve surgical accuracy in navigated lag screw repair of DSB fractures.
34th Annual Scientific Meeting proceedings
Stream:
|
Session: Short Communications
Date/Time: 05-07-2025 (08:30 - 08:45) | Location:
Date/Time: 05-07-2025 (08:30 - 08:45) | Location:
Influence of the Vertek aiming device on the surgical accuracy of computer-assisted drilling of the equine distal sesamoid bone – an experimental cadaveric study
De Preux M*1, Precht C2, Travaglini AT3, Propadalo LM3, Farra D4, Vidondo B4, Easley JT*5, Koch C*1
1Swiss Institute of Equine Medicine (ISME), Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Bern, Bern, Switzerland, 2Division of Clinical Radiology, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Bern, Bern, Switzerland, 3Vetsuisse-Faculty, University of Bern, Bern, Switzerland, 4Veterinary Institute for Public Health, Vetsuisse-Faculty, University of Bern, Bern, Switzerland, 5Preclinical Surgical Research Laboratory, Department of Clinical Sciences, Translational Medicine Institute, Colorado State University, Fort Collins, USA.
Objectives:
To determine the effect of the Vertek aiming device (VAD) on the surgical accuracy of navigated drilling of the distal sesamoid bone (DSB).
Methods:
Thirty paired equine cadaveric limbs from 15 horses were included. Each specimen was placed in a purpose-built frame (PBF). Preoperative cone beam computed tomography (CBCT) images were acquired with an imaging unit coupled with a surgical navigation system. In the DSB of each specimen, a 4.5 mm glide hole and a 3.2 mm thread hole were drilled under navigation guidance, to simulate drilling for the repair of a mid-sagittal DSB fracture. In the VAD group navigated drilling was assisted by using the VAD. In the free-hand drilling group navigated drilling was performed without the VAD. Pre-and postoperative CBCT scans were merged and surgical accuracy aberrations (SAA) between the planned drill corridor and the created bone tunnel were measured. Descriptive statistics and repeated-measures analyses of variance (rep.-meas. ANOVA) were performed to compare SAA measurements between the study groups.
Results:
The SAA measurements ranged from 0 mm to 2.9 mm in the free-hand group and from 0 mm to 2.8 mm in the VAD group. The median overall SAA was lower in the VAD group than in the free-hand navigated group (0.6 mm ± (0.5 – 0.7) vs 0.8 mm ± (0.7 – 1), rep.-meas. ANOVA p = 0.007).
Conclusions:
The combined use of the VAD and PBF may help improve surgical accuracy in navigated lag screw repair of DSB fractures.
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