Three-Dimensional-Printed Patient-Specific Osteotomy Guides, Repositioning Guides and Titanium Plates for Acute Correction of Antebrachial Limb Deformities in DogsFunding None.
Objective The aim of this study was to describe the use of patient-specific three-dimensional (3D)-printed osteotomy guides, repositioning guides and custom-printed titanium plates for acute correction of antebrachial limb deformities in four dogs.
Methods Retrospective review of antebrachial limb deformities in small breed chondrodystrophic dogs that were surgically corrected using a closing wedge ostectomy of the radius at a predetermined site using patient-specific osteotomy guides. Reduction was achieved without the need for intraoperative measurements using patient-specific 3D-printed repositioning guides secured and manipulated using temporary Kirschner wire fixation. The ostectomy of the radius was stabilized with a patient-specific 3D-printed titanium plate.
Results All limbs were corrected to within 3.5 degrees (standard deviation [SD]: 1 degree) and 7.5 degrees (SD: 3 degrees) of the pre-planned deformity correction in the frontal and sagittal planes, respectively. No complications were encountered. Owners completed a canine orthopaedic index survey at a median postoperative follow-up time of 19 months. Surgery eliminated the main presenting complaint of buckling over of the manus in all cases.
Clinical Significance The 3D-printed osteotomy repositioning guides and titanium plates facilitated accurate acute correction of antebrachial deformities in this case series. The methodology described simplifies intraoperative surgical decision-making on limb position with good clinical outcomes seen in a small number of clinical cases.
Keywordsdeformity correction - custom implant fabrication - corrective osteotomy - 3D printed osteotomy guide - additive manufacturing - dog
D.R.C. partly wrote the manuscript and analysed the data collected. M.J.G. identified suitable cases, partly wrote the manuscript and reviewed the draft manuscript. N.J.B. performed surgery for one of the cases, constructed two of the figures, reviewed the draft manuscript and was one of the authors with the initial thoughts to develop the manuscript. F.L.O. was involved in surgical planning for all cases, implant development, provided 3D reconstruction images for the manuscript and reviewed the manuscript. K.J.P. performed surgery on three of the cases, reviewed the manuscript and was one of the authors with the initial thoughts to develop the manuscript.
Received: 10 October 2019
Accepted: 09 March 2020
30 April 2020 (online)
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