Correction of Biapical Radial Deformities by Use of Bi‐Level Hinged Circular External Fixation and Distraction Osteogenesis in 13 Dogs. Issue 3 (10th January 2014)

• Record Type: Journal Article
• Authors: Kwan, Toni W.; Marcellin‐Little, Denis J.; Harrysson, Ola L.A.
• Is Part Of: Veterinary surgery. Volume 43:Issue 3(2014)
• Page Start: 316
• Page End: 329
• Publication Date: 2014-01-10
• Subjects: Veterinary surgery -- Periodicals; Veterinary Medicine -- Periodicals; Surgery -- Periodicals; Societies, Medical -- Periodicals; 636.0897
• DOI: 10.1111/j.1532-950X.2014.12114.x
• Languages: English
• ISSNs: 0161-3499

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="vsu12114-sec-0001" sec-type="section"> <title>Objectives</title> <p>To describe clinical, radiographic, and computed tomographic (CT) assessment of biapical deformities of the radius in dogs and evaluate the effectiveness of their management by use of bilevel hinged circular external fixation frames.</p> </sec> <sec id="vsu12114-sec-0002" sec-type="section"> <title>Study design</title> <p>Prospective, non‐randomized cohort study.</p> </sec> <sec id="vsu12114-sec-0003" sec-type="section"> <title>Animals</title> <p>Dogs (N = 26: 13 with 14 limbs operated, 13 controls).</p> </sec> <sec id="vsu12114-sec-0004" sec-type="section"> <title>Methods</title> <p>CT scans of the forelimbs were performed and CT‐based polymer replicas prepared. Rotation within the elbow joint, varus of the proximal portion of the radius, radial torsion, valgus of the distal portion of the radius, procurvatum, and rotation within the carpal joint were measured on radiographs, on polymer replicas, and on CT scans. Bilevel hinged circular external fixation frames were assembled on polymer replicas and identical frames were placed on dogs. Torsion was corrected acutely and angulation was corrected progressively. Functional outcome was assessed subjectively.</p> </sec> <sec id="vsu12114-sec-0005" sec-type="section"> <title>Results</title> <p>Buckling was present preoperatively in operated limbs. Mean (±SD) varus of the proximal portion of the radius was 36 ± 8°, valgus of the distal portion of the radius was 32 ± 5°, external radial torsion was 35 ± 6°, procurvatum was 41 ± 10°, and medial translation was 44 ± 11 mm. Treatment duration was 80 ± 24 days. Buckling was not observed after surgery. Lameness scores improved in all dogs (<italic>P</italic> < .001).</p> </sec> <sec id="vsu12114-sec-0006" sec-type="section"> <title>Conclusions</title> <p>The forelimbs of dogs with severe biapical radial deformities buckle and have increased radial head rotation and radial torsion. Biapical radial deformities can be managed with proximal and distal radial osteotomies and bilevel hinged circular external fixation.</p> </sec> </abstract>