Authors: John Hanlon, Caleb C Hudson, Alan S Litsky, Stephen C Jones

Objective: To assess the feasibility and mechanical stability of sacroiliac (SI) joint stabilization using 2 short 3.5 mm cortical screws, each spanning an average of 23% of the width of the sacral body.

Study design: Cadaveric experimental study.

Sample population: Twenty-four canine pelvis specimens.

Authors: T Aikawa, Y Miyazaki, S Kihara, Y Saitoh, M Nishimura, S L Stephan, C W Dewey

Objectives: To describe the diagnostic findings, surgical technique and outcomes in seven pugs with thoracolumbar vertebral instability due to articular process anomalies.

Category: Spine
Authors: Carlos Ros, Roberto José-López, Anna Suñol, Patricia Montoliu, Vicente Aige, Alejandra García de Carellán Mateo, Cristina Font

Objective: To describe the clinical and neurologic signs, diagnostic investigations, definitive or presumptive diagnosis, treatment, and outcome of dogs presented with acute onset central cord syndrome (CCS).

Animals: 74 client-owned dogs evaluated for CCS at 5 referral hospitals between January 2016 and March 2021.

Category: Spine
Authors: Sara Silva, Julien Guevar, Roberto José-López, Steven De Decker, Josep Brocal, Cristian de la Fuente, Alexane Durand, Franck Forterre, Natasha Olby, Rodrigo Gutierrez-Quintana

Background: As they have been seldomly described in the veterinary literature, the aims of this retrospective study were to describe the clinical presentation, MRI findings and long-term outcome after medical or surgical treatment of dogs presenting with foraminal and far lateral thoracolumbar intervertebral disc herniations.

Category: Spine
Authors: V Argent, R Perillo, N Jeffery, P Freeman

Objectives: Report the rate of recurrent clinical signs following successful treatment of cervical intervertebral disc extrusion, and explore the association between treatment method and recurrence.

Category: Spine
Authors: B Jones, S Behr, T Shaw, R Cappello, N Jeffery, F X Liebel, T Harcourt-Brown

Objectives: To report the surgical techniques being used to treat single focal spinal intra-arachnoid diverticula in dogs, their complications and immediate postoperative outcomes.

Materials and methods: Retrospective multi-centre case series across four referral centres.

Category: Spine
Authors: K V Kristiansen, H Schmökel, S Vermeire

Objective: The aim of this study was to review and describe cases of thoracolumbar (TL) hydrated nucleus pulposus extrusion (HNPE) diagnosed with magnetic resonance imaging and surgery, and compare them to cases of cervical (C) HNPE.

Study design: Retrospective, single-center study.

Category: Spine
Authors: Daphne Mavrides, Marios Charalambous, Paul Freeman

The aim of this study is to report chronic complications (> 2 mo after surgery) following spinal segmental stabilization (SSS) to treat myelopathy associated with thoracic congenital vertebral malformations in brachycephalic dogs.

Follow-up medical records (years 2006 to 2020) of 12 cases that underwent SSS at 3 university hospitals were retrieved and analyzed with a minimum follow-up period of 1 y.

Five dogs showed no chronic complications and 7 dogs had chronic complications which are reported here.

Category: Spine
Authors: Sebastian C Knell, Brian Park, Benjamin Voumard, Antonio Pozzi

Objective: To evaluate intradiskal pressure (IDP) in the C6-7 intervertebral disk (IVD) after destabilization and distraction-fusion of the C5-C6 vertebrae.

Sample: 7 cadaveric C4-T1 vertebral specimens with no evidence of IVD disease from large-breed dogs.

Category: Spine
Authors: Christian W Woelfel, Katherine Y Bray, Peter J Early, Christopher L Mariani, Natasha J Olby

Objective: To describe neurologic signs, diagnostic imaging findings, potential treatments, and outcomes in dogs with subaxial cervical articular process subluxation and dislocation, or a "locked facet."

Study design: Retrospective case series.

Animals: Ten client-owned dogs.

Category: Spine