Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque.
Cervical range of motion (ROM) is commonly assessed in clinical practice and research. In a previous study we decomposed active cervical sagittal ROM into contributions from lower and upper levels of the cervical spine and found level- and direction-specific impairments in women with chronic non-spe...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2017-01-01
|
| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5242513?pdf=render |
| _version_ | 1811344608593969152 |
|---|---|
| author | Thomas Rudolfsson Martin Björklund Åsa Svedmark Divya Srinivasan Mats Djupsjöbacka |
| author_facet | Thomas Rudolfsson Martin Björklund Åsa Svedmark Divya Srinivasan Mats Djupsjöbacka |
| author_sort | Thomas Rudolfsson |
| collection | DOAJ |
| description | Cervical range of motion (ROM) is commonly assessed in clinical practice and research. In a previous study we decomposed active cervical sagittal ROM into contributions from lower and upper levels of the cervical spine and found level- and direction-specific impairments in women with chronic non-specific neck pain. The present study aimed to validate these results and investigate if the specific impairments can be explained by the neutral posture (defining zero flexion/extension) or a movement strategy to avoid large gravitationally induced torques on the cervical spine.Kinematics of the head and thorax was assessed in sitting during maximal sagittal cervical flexion/extension (high torque condition) and maximal protraction (low torque condition) in 120 women with chronic non-specific neck pain and 40 controls. We derived the lower and upper cervical angles, and the head centre of mass (HCM), from a 3-segment kinematic model. Neutral head posture was assessed using a standardized procedure.Previous findings of level- and direction-specific impairments in neck pain were confirmed. Neutral head posture was equal between groups and did not explain the direction-specific impairments. The relative magnitude of group difference in HCM migration did not differ between high and low torques conditions, lending no support for our hypothesis that impairments in sagittal ROM are due to torque avoidance behaviour.The direction- and level-specific impairments in cervical sagittal ROM can be generalised to the population of women with non-specific neck pain. Further research is necessary to clarify if torque avoidance behaviour can explain the impairments. |
| first_indexed | 2024-04-13T19:50:42Z |
| format | Article |
| id | doaj.art-1047a1c57ac441fb8928ea91cda9b09a |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T19:50:42Z |
| publishDate | 2017-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-1047a1c57ac441fb8928ea91cda9b09a2022-12-22T02:32:33ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01121e017027410.1371/journal.pone.0170274Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque.Thomas RudolfssonMartin BjörklundÅsa SvedmarkDivya SrinivasanMats DjupsjöbackaCervical range of motion (ROM) is commonly assessed in clinical practice and research. In a previous study we decomposed active cervical sagittal ROM into contributions from lower and upper levels of the cervical spine and found level- and direction-specific impairments in women with chronic non-specific neck pain. The present study aimed to validate these results and investigate if the specific impairments can be explained by the neutral posture (defining zero flexion/extension) or a movement strategy to avoid large gravitationally induced torques on the cervical spine.Kinematics of the head and thorax was assessed in sitting during maximal sagittal cervical flexion/extension (high torque condition) and maximal protraction (low torque condition) in 120 women with chronic non-specific neck pain and 40 controls. We derived the lower and upper cervical angles, and the head centre of mass (HCM), from a 3-segment kinematic model. Neutral head posture was assessed using a standardized procedure.Previous findings of level- and direction-specific impairments in neck pain were confirmed. Neutral head posture was equal between groups and did not explain the direction-specific impairments. The relative magnitude of group difference in HCM migration did not differ between high and low torques conditions, lending no support for our hypothesis that impairments in sagittal ROM are due to torque avoidance behaviour.The direction- and level-specific impairments in cervical sagittal ROM can be generalised to the population of women with non-specific neck pain. Further research is necessary to clarify if torque avoidance behaviour can explain the impairments.http://europepmc.org/articles/PMC5242513?pdf=render |
| spellingShingle | Thomas Rudolfsson Martin Björklund Åsa Svedmark Divya Srinivasan Mats Djupsjöbacka Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque. PLoS ONE |
| title | Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque. |
| title_full | Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque. |
| title_fullStr | Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque. |
| title_full_unstemmed | Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque. |
| title_short | Direction-Specific Impairments in Cervical Range of Motion in Women with Chronic Neck Pain: Influence of Head Posture and Gravitationally Induced Torque. |
| title_sort | direction specific impairments in cervical range of motion in women with chronic neck pain influence of head posture and gravitationally induced torque |
| url | http://europepmc.org/articles/PMC5242513?pdf=render |
| work_keys_str_mv | AT thomasrudolfsson directionspecificimpairmentsincervicalrangeofmotioninwomenwithchronicneckpaininfluenceofheadpostureandgravitationallyinducedtorque AT martinbjorklund directionspecificimpairmentsincervicalrangeofmotioninwomenwithchronicneckpaininfluenceofheadpostureandgravitationallyinducedtorque AT asasvedmark directionspecificimpairmentsincervicalrangeofmotioninwomenwithchronicneckpaininfluenceofheadpostureandgravitationallyinducedtorque AT divyasrinivasan directionspecificimpairmentsincervicalrangeofmotioninwomenwithchronicneckpaininfluenceofheadpostureandgravitationallyinducedtorque AT matsdjupsjobacka directionspecificimpairmentsincervicalrangeofmotioninwomenwithchronicneckpaininfluenceofheadpostureandgravitationallyinducedtorque |