BACKGROUND: Neck pain afflicts 30-50% of the U.S. population annually; however we currently have poor diagnostic differentiation techniques to inform individualized treatment. Planar neck kinematics has been shown to be correlated with neck pain, but neck motion is much more complex than pure planar activities. Our objective was to define a methodology for determining aberrant neck kinematics and assess it. METHODS: We examined a complex neck kinematic activity of neck circumduction and computed the pathway of motion using the instantaneous helical axis approach in 81 patients with non-specific neck pain and in 20 non-matched symptom free subjects. Neck circumduction, or rolling of the head, represents a complex neck kinematic activity, investigating the innate coupled motion of the cervical spine at the end ranges of motion in all directions. Instance of discontinuities in the helical axis patterns, or folds, were identified and labeled as occurrences of aberrant motion. FINDINGS: The instances of aberrant motion, or folds, which are nearly non-existent in the healthy sample group, are present in both the pre- and post-treatment neck pain patients. Following a treatment intervention of the symptomatic patients, pain and neck disability index decreased significantly (P<0.001) concomitant with a decrease in the number of folds (P=0.021). INTERPRETATION: The present study highlights a new technique using an instantaneous helical axis approach to detect subtle abnormalities in the pathway of motion of the head about the trunk, during a neck circumduction exercise.
BACKGROUND:Neck pain afflicts 30-50% of the U.S. population annually; however we currently have poor diagnostic differentiation techniques to inform individualized treatment. Planar neck kinematics has been shown to be correlated with neck pain, but neck motion is much more complex than pure planar activities. Our objective was to define a methodology for determining aberrant neck kinematics and assess it. METHODS: We examined a complex neck kinematic activity of neck circumduction and computed the pathway of motion using the instantaneous helical axis approach in 81 patients with non-specific neck pain and in 20 non-matched symptom free subjects. Neck circumduction, or rolling of the head, represents a complex neck kinematic activity, investigating the innate coupled motion of the cervical spine at the end ranges of motion in all directions. Instance of discontinuities in the helical axis patterns, or folds, were identified and labeled as occurrences of aberrant motion. FINDINGS: The instances of aberrant motion, or folds, which are nearly non-existent in the healthy sample group, are present in both the pre- and post-treatment neck painpatients. Following a treatment intervention of the symptomatic patients, pain and neck disability index decreased significantly (P<0.001) concomitant with a decrease in the number of folds (P=0.021). INTERPRETATION: The present study highlights a new technique using an instantaneous helical axis approach to detect subtle abnormalities in the pathway of motion of the head about the trunk, during a neck circumduction exercise.
Authors: Fredrik Ohberg; Helena Grip; Urban Wiklund; Ylva Sterner; J Stefan Karlsson; Björn Gerdle Journal: IEEE Trans Inf Technol Biomed Date: 2003-12
Authors: Laura L Greaves; Carolyn Van Toen; Angela Melnyk; Lynn Koenig; Qingan Zhu; Stephen Tredwell; Kishore Mulpuri; Peter A Cripton Journal: Spine (Phila Pa 1976) Date: 2009-07-15 Impact factor: 3.468
Authors: Gert Bronfort; Roni Evans; Alfred V Anderson; Kenneth H Svendsen; Yiscah Bracha; Richard H Grimm Journal: Ann Intern Med Date: 2012-01-03 Impact factor: 25.391
Authors: Bruno Bonnechère; Patrick Salvia; Pierre-Michel Dugailly; Laura Maroye; Bernard Van Geyt; Véronique Feipel Journal: Eur Spine J Date: 2014-03-09 Impact factor: 3.134
Authors: David Schroeder; Fedor Korsakov; Carissa Mai-Ping Knipe; Lauren Thorson; Arin M Ellingson; David Nuckley; John Carlis; Daniel F Keefe Journal: IEEE Trans Vis Comput Graph Date: 2014-12 Impact factor: 4.579