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Your search keyword '"Marcellin-Little, Denis J."' showing total 35 results
Start Over Author "Marcellin-Little, Denis J." Journal veterinary surgery
35 results on '"Marcellin-Little, Denis J."'

1. Accuracy of three‐dimensionally printed animal‐specific drill guides for implant placement in canine thoracic vertebrae: A cadaveric study

Author

Mariani, Christopher L, Zlotnick, Joshua A, Harrysson, Ola, Marcellin‐Little, Denis J, Malinak, Kristen, Gavitt, Ashley, and Guevar, Julien

Subjects
Veterinary Sciences, Agricultural, Veterinary and Food Sciences, Rehabilitation, Animals, Bone Screws, Cadaver, Dogs, Printing, Three-Dimensional, Thoracic Vertebrae, Tomography, X-Ray Computed, Veterinary sciences
Abstract

ObjectiveTo assess the accuracy of three-dimensionally (3-D) printed drill guides in constraining the trajectory of drill tracts for implants in canine thoracic vertebrae.Study designExperimental ex vivo study.Sample populationFive canine thoracic vertebral column specimens.MethodsGuides to constrain drill trajectories were designed on the basis of computed tomographic (CT) imaging of six thoracic vertebrae (T8-T13) and were 3-D printed. The guides were used to create drill tracts in these vertebrae by both an experienced and a novice surgeon, and CT imaging was repeated. The entry point and angulation of actual and planned drill tracts were compared for both surgeons. Unintended cortical violations were also assessed by using a modified Zdichavsky classification.ResultsFifty-eight drill tracts were created in 30 vertebrae. Mean entry point deviation was 1.4 mm (range, 0.4-3.4), and mean angular deviation was 5.1° (range, 1.5°-10.8°). There were no differences between surgeons in entry point deviation (P = .07) or angular deviation (P = .22). There were no unintended cortical bone violations, and all drill tracts were classified as modified Zdichavsky grade I.ConclusionThe 3-D printed guides used in the current study yielded drill tracts with small linear and angular errors from intended paths and 100% accuracy for placement within vertebral pedicles and bodies. This technique was conveniently used by both an experienced and a novice surgeon.Clinical significanceThis technique might be immediately applicable to clinical cases requiring thoracic vertebral stabilization and may allow safe and accurate implant placement for surgeons with varying experience levels.

Published
2021

3. Effect of distal ulnar ostectomy on carpal joint stability during weight bearing in the dog

Author

Amsellem, Pierre M, Young, Aisha N, Muirhead, Tammy L, Pack, LeeAnn, Moak, Peter, Matthews, Andrea R, and Marcellin‐Little, Denis J

Subjects
Veterinary Sciences, Agricultural, Veterinary and Food Sciences, Animals, Cadaver, Carpal Joints, Dogs, Metatarsus Varus, Osteotomy, Radiography, Range of Motion, Articular, Ulna, Weight-Bearing, Veterinary sciences
Abstract

ObjectiveTo assess the influence of a 50% distal ulnectomy on mediolateral carpal stability in the dog.Study designCanine cadaveric study.Sample populationSeven canine thoracic limbs METHODS: Thoracic limbs were placed in a jig to mimic weight bearing with a load representing 30% of body weight. Carpal extension angle was standardized at 190° ± 5°. Frontal plane carpal angles were measured with the limb loaded on craniocaudal radiographs before and after ulnectomy. Valgus and varus stress radiographs with the limb loaded were acquired before and after ulnectomy. The limbs were palpated and were subjectively graded for valgus or varus instability by 2 investigators before and after ulnectomy.ResultsMean (±SD) valgus angulation increased after ulnectomy (2.1° ± 1.7°; P = .017; CI95  = 0.5°-3.7°) when the limb was loaded without valgus or varus stress applied. Mean valgus angulation increased after ulnectomy (2.7° ± 2.8°; P = .032; CI95  = -0.2°-5.5°) when valgus stress was applied to the loaded limb. Varus angulation was unchanged after ulnectomy (0.6° ± 4.6°; P = .383; CI95  = -4.2°-5.3°) when varus stress was applied to the loaded limb. Palpation detected increased valgus score after ulnectomy.ConclusionDistal ulnectomy with excision of the lateral styloid process induces a slight increase in valgus in canine cadaver carpi. The clinical consequences of that valgus on carpal function and health should be assessed in clinical patients.

Published
2017

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