{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T13:08:58Z","timestamp":1767704938300},"reference-count":16,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2017,1,11]],"date-time":"2017-01-11T00:00:00Z","timestamp":1484092800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Building Research Capabilities in Strategically Relevant Areas (BRCSRA, NZ Government) Staff Development Fund"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Veterinary Surgery"],"published-print":{"date-parts":[[2017,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To determine the effect of dorsal annulectomy and partial discectomy on the volume of the lumbosacral lateral intervertebral neurovascular foramina (intervertebral foramina) in canine cadavers during extension of the lumbosacral junction.<\/jats:p><\/jats:sec><jats:sec><jats:title>Study Design<\/jats:title><jats:p>Ex vivo experiment.<\/jats:p><jats:p><jats:bold>Sample Population<\/jats:bold>: Lumbosacral specimens from 10 large breed dogs euthanatized for reasons unrelated to lumbosacral disease.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The lumbosacral specimens were clamped in a wooden jig and scanned using computed tomography (CT) with the lumbosacral junction in a neutral position and loaded in extension using a tensioning device. The 3\u2010dimensional volumes of the lumbosacral intervertebral neurovascular foramina were measured and the extent of any disc degeneration was determined from the CT data. A limited dorsal laminectomy of S1 and a dorsal LS annulectomy and partial discectomy were then performed. The lumbosacral specimens were remounted into the jig and loaded into extension at the same tension and were re\u2010scanned. Measurements of intervertebral foraminal volume were then repeated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The mean volume of the lumbosacral foramina (n\u2009=\u200920) was 381 mm<jats:sup>3<\/jats:sup> in neutral (unloaded) positioning and 137 mm<jats:sup>3<\/jats:sup> when loaded in extension. Following dorsal annulectomy, the mean volume was significantly reduced by a mean of 28% to 98 mm<jats:sup>3<\/jats:sup> (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.01). The foraminal volume was reduced in 19\/20 lumbosacral foramen, with the post\u2010annulectomy volume ranging from 31% to 97% of the pre\u2010annulectomy volume (3%\u201069% reduction).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study suggests that a dorsal annulectomy with partial discectomy may induce further dynamic collapse of the lumbosacral articulation in the dog.<\/jats:p><\/jats:sec>","DOI":"10.1111\/vsu.12606","type":"journal-article","created":{"date-parts":[[2017,1,11]],"date-time":"2017-01-11T15:44:11Z","timestamp":1484149451000},"page":"265-270","source":"Crossref","is-referenced-by-count":6,"title":["Effect of dorsal laminectomy and dorsal annulectomy with partial lumbosacral discectomy on the volume of the lateral intervertebral neuroforamina in dogs when the lumbosacral junction is extended"],"prefix":"10.1111","volume":"46","author":[{"given":"Andrew J.","family":"Worth","sequence":"first","affiliation":[{"name":"Massey University Working Dog Centre Palmerston North New Zealand"},{"name":"Massey University Veterinary Teaching Hospital Palmerston North New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Angela","family":"Hartman","sequence":"additional","affiliation":[{"name":"Massey University Veterinary Teaching Hospital Palmerston North New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Janis P.","family":"Bridges","sequence":"additional","affiliation":[{"name":"Massey University Veterinary Teaching Hospital Palmerston North New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Boyd R.","family":"Jones","sequence":"additional","affiliation":[{"name":"Massey University Working Dog Centre Palmerston North New Zealand"},{"name":"Massey University Veterinary Teaching Hospital Palmerston North New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joe I. G.","family":"Mayhew","sequence":"additional","affiliation":[{"name":"Massey University Veterinary Teaching Hospital Palmerston North New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2017,1,11]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"166","article-title":"Degenerative lumbosacral stenosis in dogs","volume":"1","author":"Chambers J.","year":"1989","journal-title":"Vet Med Report."},{"key":"e_1_2_7_3_1","first-page":"130","article-title":"Degenerative lumbosacral stenosis","volume":"30","author":"DeRisio L","year":"2000","journal-title":"Vet Clinics N Am."},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1080\/00480169.2009.64719"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cvsm.2010.05.006"},{"key":"e_1_2_7_6_1","first-page":"A12","article-title":"Dynamic alteration of the lumbosacral lateral intervertebral canal and its potential clinical relevance, as determined by CT volume analysis","volume":"27","author":"Worth AJ","year":"2014","journal-title":"Vet Comp Orthop Traumat."},{"key":"e_1_2_7_7_1","unstructured":"BergknutN.Intervertebral disc degeneration in dogs. Doctoral Thesis No. 2010:91 Faculty of Veterinary Medicine and Animal Science Uppsala Sweden and Faculty of Veterinary Medicine Utrecht University The Netherlands;2011."},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-950X.2007.00324.x"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1053\/jvet.1999.0091"},{"key":"e_1_2_7_10_1","first-page":"213","article-title":"Canine lumbosacral diseases. Part II. 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