Impact of pregnancy on back pain and body posture in women

Guido Schröder, Günther Kundt, Mandy Otte, Detlef Wendig, Hans-Christof Schober, Guido Schröder, Günther Kundt, Mandy Otte, Detlef Wendig, Hans-Christof Schober

Abstract

[Purpose] The purpose of this single-center investigation was to study the impact of pregnancy on back pain and body posture. [Subjects] The subjects were 26 pregnant females. [Methods] Data were generated with a spine scanner (Diers(®) formetric 4D), trunk strength measurement (Diers(®) myoline), a numeric pain scale (0 to 10), and a biomechanical model. Parameters were compared during each trimester. [Results] The alteration in pain level at rest and lumbar lordosis angle in the females revealed a statistical trend during pregnancy. Spearman's test showed positive correlations between body weight and trunk inclination during the second trimester, and between body weight and the kyphosis angle in the third trimester. The trunk inclination and the kyphosis angle revealed a negative correlation in the third trimester. Based on our analysis, the highest moments and muscle strength must be expended in the third trimester. The actual muscle strength is greatest in the second trimester. [Conclusion] Pain at rest must be given greater attention in pregnant females, and their increasing lumbar kyphosis must be counteracted. Exercising the deep segmental muscles may serve as a preventive measure.

Keywords: Body posture; Pain; Pregnancy.

Figures

Fig. 1.
Fig. 1.
a) Grid of parallel lines on the dorsal surface. b) Three-dimensional view of the dorsal surface with convex (red) and concave (blue) surface areas, vertebra prominens (VP), dimple left (DL), and dimple right (DR). c) Spine parameters in the lateral view, kyphosis angle (KA), lordosis angle (LA), trunk inclination (TI), cervicothoracic (ICT) inflection point, thoracolumbar (ITL) inflection point, lumbosacral inflection point, dimple middle (DM)
Fig. 2
Fig. 2
Geometrical parameters to describe posture and the position of the gravity line. A: Sagittal view of the insertion of the erector spinae muscle, B: T12-L1 disk midpoint, C: The combined center of gravity of upper body weight and the weight that constitutes the outer load (Q), D: Sagittal view of the origin of the global muscle, E: L5-S1 disk midpoint, a: Distance from the most anterior disk midpoint to the gravity line. The coordinates of the erector spinae muscle on the rib cage are expressed by c and h. c = 59 + 21 mm and h = 100 mm. The coordinates of the origin D are expressed as d = 60mm, Φ = trunk inclination (Bergmark)

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Source: PubMed

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