Summary
Carrying loads on the head is a common practice in rural Zimbabwe. Headloading imposes a considerable amount of strain to the axial skeleton. The cervical spine, being the most cranial and mobile part of the vertebral column, may be susceptible to spondylosis or disc degeneration in headloading. Age as well as the effects of intrinsic factors on cervical spondylosis have been well documented. However, studies on the effect of extrinsic weight bearing to spondylosis on the cervical spine are lacking. In this study, the effect of headloading on the pattern of spondylosis attributed to aging was examined. Results indicated that age led to significant degeneration of the fifth intervertebral disc space (P<0.05) as well as significant straightening of the lordotic curve (P<0.01). Load carrying seems to accentuate the straightening of the curve (P<0.001). The results also suggest that headloading creates a shift in the degeneration from the fifth intervertebral disc space to higher levels. It is concluded that carrying heavy loads on the head alters the pattern of degenerative changes of the cervical spine.
Résumé
Porter de lourdes charges sur la tête est une pratique habituelle au Zimbabwe dans les zones rurales. Le port céphalique de charge impose des contraintes considérables au squelette axial. La colonne cervicale, portion crâniale et mobile de la colonne vertébrale, peut présenter une cervicarthrose ou une altération discale en raison du port de charges sur la tête. L'âge et les facteurs intrinsèques déterminant une cervicarthrose ont été bien étudiés. Cependant, l'action éventuelle d'un poids supplémentaire contribuant à la genèse d'une cervicarthrose n'a pas été étudiée. Dans cette étude, les effets du port céphalique de charge sur l'importance d'une cervicarthrose attribuée au vieillissement, sont examinés. Les résultats indiquent que le vieillissement aboutit à une altération significative du 5ème espace intervertébral (P<0,05) ainsi qu'à un redressement significatif de la lordose (P<0.01). Le port de charge semble accentuer le redressement de la courbe (P<0,001). Les résultats suggèrent également que le port de charge sur la tête réalise un transfert des lésions du 5ème espace intervertébral vers des niveaux sujacents. On en déduit que le port de lourdes charges sur la tête modifie l'aspect des atteintes dégénératives de la colonne cervicale.
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References
Dalton MB (1989) The effect of age on cervical posture in a normal female population. MTAA 6th Biennial Conference
Denis F (1983) The three column spine in the classification of acute thoracolumbar spine injuries. Spine 8: 817–824
Dunsker J (1980) Cited by Grieve GP (1988) In: Common vertebral joint problems, 2nd edn. Churchill Livingstone, Edinburgh
Fahrni WH, Trueman GE (1965) Comparative radiological study of the spines of a primitive population with Northern Americans and Northern Europeans. J Bone Joint Surg [Br] 24-B: 552–555
Grieve PG (1988) In: Common vertebral joint problems, 2nd edn. Churchill Livingstone, Edinburgh
Hansen HJ (1959) Comparative views of the pathology of disc degeneration in animals. Lab Invest 8: 1242
Hart LD, Rose S (1986) Reliability of a non invasive method for measuring the lumbar curve. JOSPT 8: 180–184
Hult L (1954) Cervical, dorsal and lumbar spine syndromes. Acta Orthop Scand 24: 174–175
Jeffreys E (1980) Disorders of the cervical spine, 1st edn. Butterworths, London
Kramer J (1981) Intervertebral disc lesions - causes, diagnosis, treatment and prophylaxis. Thieme Verlag, Stuttgart
Lawrence SJ (1977) Rheumitism in populations. Heinmann, London
Levy L (1968) Porter's neck. Br Med J 2: 16–19
Louis R (1985) Spinal stability as defined by the three-column spine concept. Anat Clin 7: 33–42
McKenzie R (1981) The lumbar spine, mechanical diagnosis and therapy. Spinal Publications, New Zealand
Nathan H (1962) Osteophytes of the vertebral column, an anatomical study of their development according to age, race, and sex with considerations as to their etiology and significance. J Bone Joint Surg [Am] 44-A: 243–264
Pal PG, Routal VR (1986) The study of weight transmission through the cervical and upper thoracic regions of the vertebral columns in man. J Anat 148: 245–261
Payne EE, Spillane JD (1957) The cervical spine: an anatomical study of 70 specimens with particular references to the problem of cervical spondylosis. Brain 80: 571. Cited by Grieve PG (1988) In: Common vertebral joint problems 2nd edn. Churchill Livingstone, Edinburgh
Pope MH, Hanley EN, Matteri RE, Wilder DG, Frymore JW (1977) Measurement of intervertebral disc space height. Spine 2: 282–286
Refshauge K, Bolst L, Goodsell M (1992) The relationship between cervicothoracic posture and the presence of pain. MPAA Conference Proceedings, Colarado
Roberts S, Menage J, Urban JPG (1989) Biomechanical and structural properties of the cartilage end-plate and its relation to the I. V Disc. Spine 14: 166–174
Tchang SPK (1984) The cervical spinolaminar line. J Assoc Can Radiol 25: 224–226. Cited by Jeffreys E (1980) Disorders of the cervical spine. Butterworths, London
Todd TW, Pyle SI (1928) Am J Phys Anthrop 12: 321. Cited by Levy L (1968) Porter's Neck. Br Med J 2 : 16–19
Twomey LT, Taylor JR (1989) Joints of the middie and lower cervical spine: age changes and pathology. MTTA 6th Biennial Conference, Adelaide
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Joosab, M., Torode, M. & Prasada Rao, P. Preliminary findings on the effect of load-carrying to the structural integrity of the cervical spine. Surg Radiol Anat 16, 393–398 (1994). https://doi.org/10.1007/BF01627659
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DOI: https://doi.org/10.1007/BF01627659