Arthurs G. Gareth Arthurs, MA, VetMB, CertVR, CertSAS, DSAS(Orth), MRCVS, Queen Mother Hospital for Animals, The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL9 7TA, United Kingdom, VCOT 2009 22 5 422-6 A four-year-old male Dachshund was presented with pelvic limb paresis due to intervertebral disc extrusion. The spine was surgically explored and decompressed by a bilateral mini-hemilaminectomy and intervertebral disc fenestration at T12-13, and a bilateral pediculectomy of T13. Five days post-operatively, the dog deteriorated because of T13 dorsal laminar subluxation and secondary spinal cord compression. This was surgically investigated and stabilised using bilateral articular facet positional screws and a dorsal spinal plate; the dog subsequently recovered well. Clinically significant spinal instability associated with mini-hemilaminectomy and pediculectomy surgery has not been reported previously.