Front Vet Sci. 2016 May 12;3:34. doi: 10.3389/fvets.2016.00034. eCollection 2016.
Feasibility for Measuring Transverse Area Ratios and Asymmetry of Lumbosacral Region Paraspinal Muscles in Working Dogs Using Computed Tomography.
Frontiers in veterinary science
Bethany Cain, Jeryl C Jones, Ida Holásková, Larry Freeman, Bess Pierce
Affiliations
Affiliations
- Division of Animal and Nutritional Sciences, Davis College of Agriculture, Natural Resources, and Design, West Virginia University , Morgantown, WV , USA.
- Office of Statistics, Davis College of Agriculture, Natural Resources, and Design, West Virginia University , Morgantown, WV , USA.
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University , Blacksburg, VA , USA.
- Department of Population and Health Science, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University , Blacksburg, VA , USA.
PMID: 27243022
PMCID: PMC4867674 DOI: 10.3389/fvets.2016.00034
Abstract
OBJECTIVES: Describe computed tomographic (CT) anatomy of canine lumbosacral (LS) paraspinal muscles, a method for measuring paraspinal muscle transverse area ratios and asymmetry using CT, and application of this method in a small sample of working dogs with versus without LS pain.
METHODS: Published anatomy references and atlases were reviewed and discrepancies were resolved by examination of anatomic specimens and multiplanar reformatted images to describe transverse CT anatomy of LS region paraspinal muscles. Sixteen Belgian malinois military working dogs were retrospectively recruited and assigned to LS pain positive versus negative groups based on medical record entries. A single observer unaware of dog group measured CT transverse areas of paraspinal muscles and adjacent vertebral bodies, in triplicate, for L5-S1 vertebral locations. A statistician compared muscle transverse area ratios and asymmetry at each vertebral location between groups.
RESULTS: The relative coefficient of variation for triplicate CT area measurements averaged 2.15% (N = 16). Multifidus lumborum (L6-7), psoas/iliopsoas (L5-6, L6-7), and sacrocaudalis dorsalis lateralis (L6-7, L7-S1) transverse area ratios were significantly smaller in dogs with LS pain (n = 11) versus without LS pain (n = 5) (p ≤ 0.05). Muscle asymmetry values were not significantly greater in dogs with versus without LS pain.
CLINICAL RELEVANCE: Computed tomographic morphometry of LS region paraspinal muscles is a feasible objective method for use in future evidence-based research studies in working dogs. Potential future research applications include determining whether decreased paraspinal muscle area ratios and/or increased paraspinal muscle asymmetry could be used as markers for preclinical LS pain in stoic dogs or risk factors for other injuries in high performance canine athletes, or determining whether core muscle strengthening exercise prescriptions for dogs with LS pain have an effect on paraspinal muscle area ratios and asymmetry.
Keywords: CT; canine; cauda equina; core muscle; lower back
References
- Eur Spine J. 2000 Aug;9(4):266-72 - PubMed
- Spine (Phila Pa 1976). 2011 Jun;36(13):E868-74 - PubMed
- J Small Anim Pract. 2015 Oct;56(10 ):618-22 - PubMed
- Vet Clin North Am Small Anim Pract. 2005 Nov;35(6):1427-39, ix - PubMed
- Vet Surg. 2012 May;41(4):443-7 - PubMed
- Vet Surg. 2003 Jan-Feb;32(1):21-9 - PubMed
- Diagn Interv Radiol. 2007 Sep;13(3):144-8 - PubMed
- Eur Spine J. 2010 Jul;19(7):1136-44 - PubMed
- J Am Vet Med Assoc. 1997 Jun 1;210(11):1631-4 - PubMed
- Vet Surg. 2007 Jul;36(5):472-81 - PubMed
- J Gerontol A Biol Sci Med Sci. 2005 Nov;60(11):1420-4 - PubMed
- Clin Tech Small Anim Pract. 2007 Nov;22(4):183-94 - PubMed
- PM R. 2015 May;7(5):519-26 - PubMed
- Eur Spine J. 1992 Jun;1(1):38-42 - PubMed
- Am J Vet Res. 1995 Sep;56(9):1125-32 - PubMed
- N Z Vet J. 2009 Dec;57(6):319-30 - PubMed
- J Am Vet Med Assoc. 2000 Jun 1;216(11):1769-74 - PubMed
- Phys Ther. 2013 Nov;93(11):1540-50 - PubMed
- Ann Anat. 2001 Mar;183(2):145-50 - PubMed
- Clin Tech Small Anim Pract. 2007 Nov;22(4):155-9 - PubMed
- Spine (Phila Pa 1976). 2003 Jul 1;28(13):1455-60 - PubMed
Publication Types