Page 155 - Zoo Animal Learning and Training

156 Section III: Spinal Procedures

Figure 16.9 Hemostatic forceps are attached to the
spinous process of C2 to elevate the laminotomy flap
(top). Using the intact dorsal atlantoaxial ligament as
a pivot point, the flap is rotated 150–180° craniad and
wrapped in a moistened surgical sponge. After the
neurosurgical procedure is completed, the lamina is
rotated back into its normal anatomical location.
Stabilization is provided by placement of two wire
sutures (bottom). Small lateral gaps due to bone loss
during the burring process are present. Source:
Fingeroth and Smeak [16]. Reproduced with permis-
sion of John Wiley & Sons, Inc.

rostrally toward or through the foramen magnum (see Chapter 12 4 Fauber AE. Cervical disc disease: ventral slot versus hemilaminectomy versus
on suboccipital craniotomy/craniectomy techniques). If C2 laminot- dorsal laminectomy. In: Fingeroth JM, Thomas WB (eds) Advances in Intervertebral
Disc Disease in Dogs and Cats. Ames, IA: Wiley‐Blackwell, 2015: 226–231.
omy has been performed, the dorsal arch of the axis is rotated back 5 Gill PJ, Lippincott CL, Anderson SM. Dorsal laminectomy in the treatment of
over the exposed vertebral canal and the spinous process is stabi- cervical intervertebral disk disease in small dogs: a retrospective study of 30 cases.
lized with one or two cerclage wires or sutures through predrilled J Am Anim Hosp Assoc 1996;32:77–80.
holes. Care should be taken with placement of any interpositional 6 Funquist B. Decompressive laminectomy for cervical disk protrusion in the dog.
fat or cellulose sponge over the dural tube/spinal cord as this may Acta Vet Scand 1962;3:88–101.
cause secondary compression once the axis is repaired. Likewise, 7 Pettit GD, Whittaker RP. Hemilaminectomy for cervical disk protrusion in a dog.
J Am Vet Med Assoc 1963;143:379–383.
the creation of the laminotomy results in a thin strip of bone loss at 8 Tanaka H, Nakayama M, Takase K. Usefulness of hemilaminectomy for cervical
the lateral margins, and one should take care not to force the pedi- intervertebral disk disease in small dogs. J Vet Med Sci 2005;67:679–683.
cles into apposition lest the lamina end up compressing the dural 9 Parker AJ. Surgical approach to the cervicothoracic junction. J Am Anim Hosp
Assoc 1973;9:374.
tube (Figure 16.9). 10 Matiasek LA, Platt SR, Dennis R, Petite A. Subfascial seroma causing compressive mye-
lopathy after cervical dorsal laminectomy. Vet Radiol Ultrasound 2006;47:581–584.
Video clips to accompany this book can be found on 11 Thomas WB, Fingeroth JM. What should cover the bone defect after laminectomy/
the companion website at: hemilaminectomy? In: Fingeroth JM, Thomas WB (eds) Advances in Intervertebral
Disc Disease in Dogs and Cats. Ames, IA: Wiley‐Blackwell, 2015: 255–258.
www.wiley.com/go/shores/neurosurgery 12 Lipsitz D, Bailey CS. Lateral approach for cervical spinal cord decompression. Prog
Vet Neurol 1992;3:39–44.
13 Lipsitz D, Bailey CS. Clinical use of the lateral approach for cervical spinal cord and
nerve root disease: eight cases. Prog Vet Neurol 1995;6:60–65.
References 14 Rossmeisl JH Jr, Lanz OI, Inzana KD, Bergman RL. A modified lateral approach to the
1 Felts JF, Prata RG. Cervical disk disease in the dog: intraforaminal and lateral disk canine cervical spine: procedural description and clinical application in 16 dogs with
extrusions. J Am Anim Hosp Assoc 1983;19:755–760. lateralized compressive myelopathy or radiculopathy. Vet Surg 2005;34:436–444.
2 Bagley RS, Tucker R, Harrington ML. Lateral and foraminal disk extrusion in dogs. 15 Schmied O, Golini L, Steffen F. Effectiveness of cervical hemilaminectomy in
Compend Contin Educ Pract Vet 1996;18:796–804. canine Hansen type I and type II disk disease: a retrospective study. J Am Anim
3 De Risio L, Munana K, Murray M, Olby N, Sharp NJH, Cuddon P. Dorsal laminec- Hosp Assoc 2011;47:342–350.
tomy for caudal cervical spondylomyelopathy: postoperative recovery and long‐ 16 Fingeroth JM, Smeak DD. Laminotomy of the axis for surgical access to the cervical
term follow‐up in 20 dogs. Vet Surg 2002;31:418–427. spinal cord: a case report. Vet Surg 1989;18:123–129.