Abstract
Objective - To measure passive spinal movements induced during dorsoventral mobilization and evaluate effects of induced pain and spinal manipulative therapy (SMT) on passive vertebral mobility in standing horses. Animals - 10 healthy adult horses. Procedures - Baseline vertical displacements, applied force, stiffness, and frequency of the oscillations were measured during dorsoventral spinal mobilization at 5 thoracolumbar intervertebral sites. As a model for back pain, fixation pins were temporarily implanted into the dorsal spinous processes of adjacent vertebrae at 2 of the intervertebral sites. Vertebral variables were recorded again after pin placement and treadmill locomotion. In a randomized crossover study, horses were allocated to control and treatment interventions, separated by a 7-day washout period. The SMT consisted of high-velocity, low-amplitude thrusts applied to the 3 non-pin-placement sites. Control horses received no treatment. Results - The amplitudes of vertical displacement increased from cranial to caudal in the thoracolumbar portion of the vertebral column. Pin implantation caused no immediate changes at adjacent intervertebral sites, but treadmill exercise caused reductions in most variables. The SMT induced a 15% increase in displacement and a 20% increase in applied force, compared with control measurements. Conclusions and Clinical Relevance - The passive vertical mobility of the trunk varied from cranial to caudal. At most sites, SMT increased the amplitudes of dorsoventral displacement and applied force, indicative of increased vertebral flexibility and increased tolerance to pressure in the thoracolumbar portion of the vertebral column.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 508-516 |
| Number of pages | 9 |
| Journal | American Journal of Veterinary Research |
| Volume | 68 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2007 |
| Externally published | Yes |
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ASJC Scopus subject areas
- veterinary(all)
Cite this
Effects of vertebral mobilization and manipulation on kinematics of the thoracolumbar region. / Haussler, Kevin K.; Hill, Ashley E; Puttlitz, Christian M.; McIlwraith, C. Wayne.
In: American Journal of Veterinary Research, Vol. 68, No. 5, 05.2007, p. 508-516.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of vertebral mobilization and manipulation on kinematics of the thoracolumbar region
AU - Haussler, Kevin K.
AU - Hill, Ashley E
AU - Puttlitz, Christian M.
AU - McIlwraith, C. Wayne
PY - 2007/5
Y1 - 2007/5
N2 - Objective - To measure passive spinal movements induced during dorsoventral mobilization and evaluate effects of induced pain and spinal manipulative therapy (SMT) on passive vertebral mobility in standing horses. Animals - 10 healthy adult horses. Procedures - Baseline vertical displacements, applied force, stiffness, and frequency of the oscillations were measured during dorsoventral spinal mobilization at 5 thoracolumbar intervertebral sites. As a model for back pain, fixation pins were temporarily implanted into the dorsal spinous processes of adjacent vertebrae at 2 of the intervertebral sites. Vertebral variables were recorded again after pin placement and treadmill locomotion. In a randomized crossover study, horses were allocated to control and treatment interventions, separated by a 7-day washout period. The SMT consisted of high-velocity, low-amplitude thrusts applied to the 3 non-pin-placement sites. Control horses received no treatment. Results - The amplitudes of vertical displacement increased from cranial to caudal in the thoracolumbar portion of the vertebral column. Pin implantation caused no immediate changes at adjacent intervertebral sites, but treadmill exercise caused reductions in most variables. The SMT induced a 15% increase in displacement and a 20% increase in applied force, compared with control measurements. Conclusions and Clinical Relevance - The passive vertical mobility of the trunk varied from cranial to caudal. At most sites, SMT increased the amplitudes of dorsoventral displacement and applied force, indicative of increased vertebral flexibility and increased tolerance to pressure in the thoracolumbar portion of the vertebral column.
AB - Objective - To measure passive spinal movements induced during dorsoventral mobilization and evaluate effects of induced pain and spinal manipulative therapy (SMT) on passive vertebral mobility in standing horses. Animals - 10 healthy adult horses. Procedures - Baseline vertical displacements, applied force, stiffness, and frequency of the oscillations were measured during dorsoventral spinal mobilization at 5 thoracolumbar intervertebral sites. As a model for back pain, fixation pins were temporarily implanted into the dorsal spinous processes of adjacent vertebrae at 2 of the intervertebral sites. Vertebral variables were recorded again after pin placement and treadmill locomotion. In a randomized crossover study, horses were allocated to control and treatment interventions, separated by a 7-day washout period. The SMT consisted of high-velocity, low-amplitude thrusts applied to the 3 non-pin-placement sites. Control horses received no treatment. Results - The amplitudes of vertical displacement increased from cranial to caudal in the thoracolumbar portion of the vertebral column. Pin implantation caused no immediate changes at adjacent intervertebral sites, but treadmill exercise caused reductions in most variables. The SMT induced a 15% increase in displacement and a 20% increase in applied force, compared with control measurements. Conclusions and Clinical Relevance - The passive vertical mobility of the trunk varied from cranial to caudal. At most sites, SMT increased the amplitudes of dorsoventral displacement and applied force, indicative of increased vertebral flexibility and increased tolerance to pressure in the thoracolumbar portion of the vertebral column.
UR - http://www.scopus.com/inward/record.url?scp=34249677741&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34249677741&partnerID=8YFLogxK
U2 - 10.2460/ajvr.68.5.508
DO - 10.2460/ajvr.68.5.508
M3 - Article
C2 - 17472450
AN - SCOPUS:34249677741
VL - 68
SP - 508
EP - 516
JO - American Journal of Veterinary Research
JF - American Journal of Veterinary Research
SN - 0002-9645
IS - 5
ER -