An Interlaminotomy New Zealand White Rabbit Model to Evaluate Novel Epidural Strategies.

Nevzati, Edin; Soleman, Jehuda; Schöpf, Salome Aglaia; Coluccia, Daniel; Fandino, Javier; Marbacher, Serge (2015). An Interlaminotomy New Zealand White Rabbit Model to Evaluate Novel Epidural Strategies. Journal of neurological surgery. Part A, Central European neurosurgery, 76(6), pp. 466-472. Thieme 10.1055/s-0035-1558416

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OBJECTIVE

The New Zealand White (NZW) rabbit model is an established animal model for examining surgical methods to prevent epidural scar formation after spine surgery. As most approaches include complete laminectomy of the rabbit vertebra, this procedure is associated with high morbidity and mortality rates. We examined a less invasive technique, the microsurgical interlaminotomy, for testing epidural substance application in the rabbit spine.

METHODS

Surgery was performed in the cadaver rabbit spine to evaluate the approach before performing it in NZW rabbits. All surgical procedures were performed under an operation microscope. Female rabbits with a mean weight of 4770 g  ±  240 g were used. Neurologic symptoms were analyzed based on predefined scores. After resection of the spinal process, the caudal part of the upper lamina was resected using a drill and a 1-mm Kerrison punch. The yellow ligament was resected resulting in a dural exposure of ∼ 5 × 10 mm.

RESULTS

Eight pilot interlaminotomies were performed on three cadaveric spines to establish the surgical approach. Twenty-one NZW rabbits were then operated on using the interlaminotomy model. Three rabbits (14.3%) died during surgery due to anesthesia-related complications. Two rabbits (9.5%) showed partial paresis of the lower extremities and one (4.8%) a complete paraplegia. The remaining 15 rabbits (71.4%) had an uneventful recovery without neurologic symptoms. The mean surgical duration was 88 +/- 28 minutes.

CONCLUSION

The rabbit interlaminotomy model is associated with few neurologic deficits and a relatively short operating time.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Forschungsbereich Mu50 > Forschungsgruppe Neurochirurgie

UniBE Contributor:

Fandino, Javier and Marbacher, Serge

Subjects:

600 Technology > 610 Medicine & health

ISSN:

2193-6315

Publisher:

Thieme

Language:

English

Submitter:

Marceline Brodmann

Date Deposited:

21 Sep 2022 11:34

Last Modified:

05 Dec 2022 16:25

Publisher DOI:

10.1055/s-0035-1558416

PubMed ID:

26351871

BORIS DOI:

10.48350/173110

URI:

https://boris.unibe.ch/id/eprint/173110

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