عنوان مقاله [English]
Background and purpose: Anatomy and biomechanics of the spine have been changed because of modern life style and working in unhealthy environments; therefore, diagnosis of postural deviations and their kinematic relationship has particular importance in detection, prevention, and treatment of these disorders. One of the most common postural abnormalities is forward head posture which could be created independently or after other postural disorders. The aim of the present study was to evaluate spine curves in patients with forward head posture and to compare it with healthy individuals.
Materials and methods: In the current study, 51 patients and 50 healthy participants, matched height, weight, and age, were recruited. To evaluate and diagnose the forward head posture, photography method and calculation of craniovertabral angle were used and to measure the spinal curvatures, flexi curve, as a noninvasive and valid method, was used. All measurements were performed in both standing and sitting positions.
Results:Statistical results showed that by reducing the craniovertabral angle, thoracic kyphosis and lumbar lordosis increased and also there is a significant difference in craniovertabral angle, head tilt angle, thoracic kyphosis, and lumbar lordosis between the two groups and also between sitting and standing position (p<0.05).
Conclusion: Our results indicated that the increase of forward head posture in standing position is associated with the increase of thoracic kyphosis and also lumbar lordosis and in sitting position it is associated with the increase of thoracic kyphosis.
10. Darnell MW. A proposed chronology of events for forward head posture. Journal of craniomandibular practice. 1983;1(4):49-54. ##
11. Visscher C, De Boer W, Lobbezoo F, Habets L, Naeije M. Is there a relationship between head posture and craniomandibular pain? Journal of oral rehabilitation. 2002;29(11):1030-6. ##
12. Solow B, Tallgren A. Natural head position in standing subjects. Acta Odontologica Scandinavica. 1971;29(5):591-607. ##
13. Greendale G, Nili N, Huang M-H, Seeger L, Karlamangla A. The reliability and validity of three non-radiological measures of thoracic kyphosis and their relations to the standing radiological Cobb angle. Osteoporosis International. 2011;22(6):1897-905. ##
14. Rajabi R, Seidi F, Mohamadi F. Which method is accurate when using the flexible ruler to measure the lumbar curvature angle? deep point or mid point of arch. World Applied Sciences Journal. 2008;4(6):849-52. ##
15. Azadinia F, Kamyab M, Behtash H, Ganjavian MS, Javaheri MR. The validity and reliability of noninvasive methods for measuring kyphosis. Journal of spinal disorders & techniques. 2014;27(6):E212-E8. ##
16. Barrett E, McCreesh K, Lewis J. Reliability and validity of non-radiographic methods of thoracic kyphosis measurement: a systematic review. Manual therapy. 2014;19(1):10-7. ##
17. Page P, Frank C, Lardner R. Assessment and treatment of muscle imbalance: the Janda approach: Human Kinetics; 2010. ##
18. Diab AA. The role of forward head correction in management of adolescent idiopathic scoliotic patients: a randomized controlled trial. Clinical rehabilitation. 2012:0269215512447085##.
19. Quek J, Pua Y-H, Clark RA, Bryant AL. Effects of thoracic kyphosis and forward head posture on cervical range of motion in older adults. Man Ther. 2013 Feb;18(1):65-71. ##
20. Kuo Y-L, Tully EA, Galea MP. Video analysis of sagittal spinal posture in healthy young and older adults. Journal of manipulative and physiological therapeutics. 2009;32(3):210-5. ##
21. Lau KT, Cheung KY, Chan MH, Lo KY, Chiu TTW. Relationships between sagittal postures of thoracic and cervical spine, presence of neck pain, neck pain severity and disability. Manual therapy. 2010;15(5):457-62. ##
22. Raine S, Twomey LT. Head and shoulder posture variations in 160 asymptomatic women and men. Archives of physical medicine and rehabilitation. 1997;78(11):1215-23. ##
23. Grimmer KA, Williams MT, Gill TK. The associations between adolescent head-on-neck posture, backpack weight, and anthropometric features. Spine. 1999;24(21):2262. ##
24. Salahzadeh Z, Maroufi N, Ahmadi A, Behtash H, Razmjoo A, Gohari M, et al. Assessment of forward head posture in females: observational and photogrammetry methods. Journal of back and musculoskeletal rehabilitation. 2014;27(2):131-9. ##
25. Yip CHT, Chiu TTW, Poon ATK. The relationship between head posture and severity and disability of patients with neck pain. Manual therapy. 2008;13(2):148-54. ##
26. Nam SH, Son SM, Kwon JW, Lee NK. The intra-and inter-rater reliabilities of the forward head posture assessment of normal healthy subjects. Journal of physical therapy science. 2013;25(6):737-9. ##
27. Greenfield B, Catlin PA, Coats PW, Green E, McDonald JJ, North C. Posture in patients with shoulder overuse injuries and healthy individuals. Journal of Orthopaedic & Sports Physical Therapy. 1995;21(5):287-95. ##
28. Watson DH, Trott PH. Cervical headache: an investigation of natural head posture and upper cervical flexor muscle performance. Cephalalgia. 1993;13(4):272-84. ##
29. Ahmadi A, Maroufi N, Sarrafzadeh J. Evaluation of forward head posture in sitting and standing positions. European Spine Journal. 2015:1-6. ##