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“I have had scoliosis surgery. Do I face any risks with pregnancy?”

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Let’s imagine the case of a healthy, active young woman who, as a teenager, had challenging scoliosis treatment, to the point of requiring surgery. Now, a few years on, she faces a new challenge: she wishes to become pregnant in order to fulfil her dreams of becoming a mother. 

Pregnancy is a period that naturally brings worries as well as lots of new information that needs to absorbed in order to be able to enjoy this special time. Those with scoliosis might start wondering “Will I have problems in pregnancy because of my scoliosis and the surgery I had? Or the reverse: “Could pregnancy aggravate my back condition?”.

Let’s try and help this mother-to-be, by providing answers based on the best available scientific evidence.

Several studies in the literature have investigated the topic “Pregnancy and surgery”, examining how one might influence the other.
Let us begin by underlining one reassuring aspect: as far as has been demonstrated so far, pregnancy (be it one pregnancy or more) has no consequences (in terms of a progression or deterioration of the curve) either on the surgically fused portion of the spine or on the vertebrae that were left free (https://pubmed.ncbi.nlm.nih.gov/32272267/;  https://pubmed.ncbi.nlm.nih.gov/2948962/). 

Nevertheless, it is always a good idea, when possible, to seek the opinion of the surgeon who performed the surgery, in order to have answers to your queries and precise instructions to follow.

Moreover, if the patient chooses epidural pain relief and/or chooses or requires to deliver by caesarean section with epidural anaesthesia, the anaesthetist might wish to avoid the surgically-treated portion of the spine (https://pubmed.ncbi.nlm.nih.gov/32578160/ ; https://pubmed.ncbi.nlm.nih.gov/30610987/ ), even though this decision by the medical team, made in agreement with the patient, seems to be taken more as a precaution.

In general, the use of epidurals in women with previous scoliosis surgery is comparable to what is observed in scoliosis patients who have not had operative treatment. Furthermore, according to the available data, anaesthesiologists seem reluctant to perform an epidural if the surgically treated portion of the column is below the third lumbar vertebra, preferring instead to opt for general anaesthesia (https://pubmed.ncbi.nlm.nih.gov/26131384/ ; https://pubmed.ncbi.nlm.nih.gov/32578160/ ; https://pubmed.ncbi.nlm.nih.gov/30610987/ ).

With regard to possible pain or complications during pregnancy and delivery, some studies have shown that there are no differences between women who have and those who have not had scoliosis surgery (https://pubmed.ncbi.nlm.nih.gov/9391799/ ).
On the other hand, low back pain during pregnancy seems to be more frequent in surgically treated patients, although it disappears relatively quickly after delivery. ( https://pubmed.ncbi.nlm.nih.gov/30610987/ ).
All in all, then, a mother-to-be can face this exciting new chapter in her life with complete peace of mind, even though she should not forget to seek the opinion, regarding her back, of both her family doctor and a spine specialist. In this way, it is possible to prevent any pain and have the best possible experience of pregnancy and childbirth

Scoliosis and pregnancy

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For a woman, discovering she is pregnant is often one of the most memorable, most exciting and happiest moments in her life. Thinking about the baby, imagining it and talking about it, not to mention feeling it inside her, arouses a number of precious and positive emotions: hope, tenderness and love. However, at the same time, pregnancy leads to various changes, in her body, her self-image and her vision of the future.
Furthermore, she will need to make adjustments and seek new balances in her (often busy) daily life, her rhythms and her relations with others. 

All this can generate normal and entirely understandable fears, and these can be amplified in mothers-to-be who happen to be affected by a condition like scoliosis. Many such women will already have expressed anxiety over their ability to conceive, carry and give birth to a child.
Pregnancy and childbirth, on account of the physical demands they make, can indeed be quite a daunting prospect for these women.

An interesting recent review of the literature (Dewan MC, Mummareddy N, Bonfield C. The influence of pregnancy on women with adolescent idiopathic scoliosis. Eur Spine J. 2018 Feb;27(2):253-263. doi: 10.1007/s00586-017-5203-7. Epub 2017 Jun 29. PMID: 28664223.), focusing on the interaction between pregnancy and scoliosis, examines these very issues. Just to give an idea, in numerical terms, of the analysis carried out, this review included 134 articles and examined 22 studies, referring to a total of 3125 patients.

First of all, the review considered whether and how scoliosis affects the timing and outcomes of pregnancy. It would appear that women with idiopathic scoliosis need not worry about their possibility of having children, even though they have a slightly lower probability of becoming pregnant compared with age-matched women, and may be slightly more likely to receive fertility treatment. Furthermore, women with scoliosis, regardless of whether they underwent surgery or bracing treatment, can expect to have a similar number of children as healthy women. 

However, the studies considered have certain limitations: most of them failed to specify whether the women with scoliosis had been actively seeking or desired pregnancy. Similarly, it is not clear whether all the patients were followed up until menopause. Furthermore, marriage rates, often not even mentioned, were not uniform across the studies.
In the absence of indications on these aspects, the slightly higher rate among women with scoliosis who do not have children could be misinterpreted.

Scoliosis: situations to beware of in adulthood

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The importance of keeping scoliosis under control through regular specialist check-ups is well known, and this is also true in adulthood when the condition can continue to evolve, albeit slowly and gradually (by half/one degree per year according to the literature).

Although curves measuring less than 30° are unlikely to progress (and a progression becomes less and less likely the further below this threshold the measurement is), curves greater than 50° will often worsen in adulthood. Accordingly, the frequency of medical check-ups is decided by the specialist on the basis of the individual patient’s clinical situation.

Idiopathic scoliosis – the form most frequently found in children and adolescents – affects females in particular. It is important to remember that there are certain times in the life of an adult woman when her body undergoes major transformations that make it necessary for her to take particular care of her back.

The first is pregnancy: it was once thought that scoliosis was most at risk of worsening during pregnancy, due to the body’s production of the hormone relaxin in preparation for childbirth; it was thought that this hormone, in addition to softening the ligaments of the pelvis ready for delivery, also had the same effect on the ligaments that help to support the spine, thereby temporarily reducing the level of trunk support.
Now, however, it is understood that the postnatal period and early months in the child’s life are the trickiest time for the mother. Indeed, in the first year of life, babies often need to be held or carried, and in the space of just a few months, they become considerably heavier. Furthermore, as they learn to walk, the mother often finds herself having to adopt a forward bent position. Obviously, all this can have a negative effect on the back, affecting posture and giving rise to pain. At the first sign of back support problems (pain, difficulty getting through the day, frequently needing to lie down), women with scoliosis, particularly if it is a severe form, would be well advised to do specific self-correction exercises prescribed by an expert physiotherapist; these exercises strengthen the back and help it to support the spine.

Finally, in menopause and beyond, the clinical situation is at increased risk of sudden worsening.
The body changes and the aging process, which accelerates with the onset of the menopause, can cause a worsening of existing curves and even the appearance of new ones, so-called de novo scoliosis. 

Although men are less often affected by idiopathic scoliosis and are of course spared the major physical and hormonal changes that women go through, they are just as likely as women to experience aging-related scoliosis.
This form can cause postural imbalances severe enough to leave the affected individual with marked forward and/or lateral flexion of the trunk.
In this stage of life, a specialist medical examination is warranted in the presence of the following: onset of pain, an increasingly bent posture, worsening of postural asymmetries, loss of height, and difficulty supporting the trunk, relieved only when lying down.

Scoliosis and pregnancy: it’s possible!

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The Isico blog www.scoliosi.org is a dedicated space where patients can ask questions and swap experiences, but it is also a place where those involved in treating scoliosis can take a more in-depth look at a series of topics and also engage with patients.

Here is one of our published posts

“I have scoliosis, can I have children?” This is a question we are often asked. And we have no hesitation in answering: “Yes, becoming a mother is a great joy that should be experienced without anxiety, even if you have scoliosis”.

It is, in fact, absolutely untrue that if you have scoliosis you can’t have children. A woman with scoliosis can have children. She should simply consult a spine specialist for advice and monitoring of her curve. 

Moreover, just like any other woman, she can, on the basis of specialist advice from a gynaecologist/obstetrician, opt for a natural delivery or a C-section. 

During pregnancy the body produces a hormone, called relaxin, which serves to “soften” the back and the pelvis, allowing the physiological changes that are necessary for giving birth.

During pregnancy itself, there will be no particular problems, as the expanding uterus supports the column and helps to stabilise it. 

After childbirth, however, the back remains very mobile for a few months, and this is the period in which there is an increased risk of a worsening of the curve, not least because the child, no longer supporting his mother’s back from within, will often be in her arms, placing an added strain on her back.
If the scoliosis is severe, it is a good idea to “plan ahead” and take some preventive measures: by working out an appropriate exercise plan before pregnancy, and continuing to do the exercises right up to the birth, it is possible to prepare effectively for the critical postnatal period when, moreover, the mother will probably have less time for doing exercises!

As for the birth itself, epidural anaesthesia may be well possible.
It depends mainly on whether the woman has had spinal fusion surgery, and, if so, on which part of the spine: if the surgery was performed at the level of the dorsal spine and the lumbar spine is free, then there will be no problem. 
If, instead, the lumbarlevel was also involved in the surgery, the anaesthesiologist will establish which was the last vertebra involved and, on this basis, decide whether or not an epidural is possible.