A recent study published in the Evidence Based Spine Care Journal reveals that pregnancy does not typically affect the curve of the spine in patients with scoliosis. The research was completed by medical professionals at the Hadassah Hebrew University Medical Center in Israel.
There are cases of scoliosis where patients experience rapid deterioration via increased curvature of the spine during pregnancy, but the consensus among professionals is that pregnancy does not affect the condition even when the patient has not been treated surgically. A review of previous studies on the topic revealed conflicting information and few relevant studies.
Researchers were able to find just two studies/articles on the topic of spine curvature and pregnancy. Women treated with an orthotic device were at increased risk of spinal curvature during pregnancy, but women never treated with orthosis were not affected by one or more pregnancies.
Evidence suggests that women with scoliosis treated with orthotic devices may be at increased risk of increased spinal curvature during pregnancy.
Source: Schroeder JE, Dettori JR, Ecker E, Kaplan L. Does pregnancy increase curve progression in women with scoliosis treated without surgery? Evid Based Spine Care J. 2011 Aug;2(3):43-50. doi: 10.1055/s-0030-1267112.