Life

Ask the GP: Nothing will cure my mother’s back pain

An osteopath said my mother's spine curved in two directions and that she had a trapped nerve
An osteopath said my mother's spine curved in two directions and that she had a trapped nerve An osteopath said my mother's spine curved in two directions and that she had a trapped nerve

Q: MY 87-year-old mother has had severe lower back pain for several months now. An osteopath arranged an X-ray and said her spine curved in two directions and that she had a trapped nerve. She spent some time on treatment, but is in more pain than before.

MH

A: How concerning it must be to both of you that your mother’s back has worsened, despite her expensive treatment. My feeling is that an exact diagnosis would be of great value – and that a specialist in spinal disorders could give a more detailed assessment than an osteopath and order more sophisticated scans.

In someone of your mother’s age, there are two common potential causes of her symptoms. The first is osteoporosis, the condition characterised by thinning of the bones, which results in them becoming weak and fragile.

They can become so fragile that even something as simple as bending over or coughing can lead to a fracture, with the hips, wrists and spine most commonly affected.

In your mother’s case, one or more of the vertebrae – the bones that stack on top of each other to form the spine – may have cracked or crumbled.

Known as a spinal compression fracture, this would lead to the curvature of the spine identified on her X-ray and could account for the pain she is experiencing.

The foundations of osteoporosis are laid down in teenage years and, by the time a person is 20 or so, they will have reached peak bone mass and strength, when the bones are as good as they ever can be.

Milk and other dairy products are especially rich in the calcium needed in adolescence to make the bones as dense and as strong as possible. Your mother was, however, in that age group who grew up in years of rationing when diet may have been relatively impoverished.

In addition, perhaps her exposure to sunlight may not have been optimal (we need this to produce vitamin D, which is essential for calcium to be used by the body).

If she has an osteoporosis-related fracture, your mother may be prescribed calcium and vitamin D supplements to take daily, to try to prevent further injury.

She may also benefit from bisphosphonate, which will provide small improvements in bone density that make a big difference in terms of symptoms in the future. The second possible diagnosis – and it might be that there is a combination of both – is degenerative disease of the lower part of the spine.

This is caused by an interplay of osteoarthritis of the facet joints, the buttresses that support either side of the spine, and thinning of the discs that act as shock absorbers in the spine.

This degeneration could also account for the pain and even the trapped nerve mentioned by the osteopath.

In exceptional circumstances, surgery may be needed to move the trapped nerve, but, most commonly, the patient will be offered supportive care, such as physiotherapy.

It would be quite wrong – and, in my view, unethical – to say that, at your mother’s age, she should merely be treated with painkillers and rest, or even anti-inflammatory drugs, and not investigated further.

A specialist could do a full assessment, including MRI scans and possibly a bone-density scan, to assess any degree of osteoporosis. I urge you to ask her GP for a referral.

Only with a precise diagnosis can the correct treatment be applied and plans made to restore her to healthy function, including the four-mile walks you say in your longer letter she so used to enjoy.

Q: I’M 51, I haven’t had a period in almost three years and I have been tired and dizzy of late. A blood test showed my ferritin levels are low, with a reading of 45, and I was prescribed iron tablets. Do you think vitamin injections would give me more energy while I wait for the tablets to start working?

AMI

A: Severe fatigue can be debilitating, so I sympathise with you. Ferritin is a combination of iron and protein and is used as a measure of your blood’s iron stores. The normal ferritin range is between 15 and 180 ng/ml (nanograms per millilitre). Your reading of 45 is certainly at the bottom end of normal, but nowhere near the level of depletion in someone considered iron deficient.

Iron deficiency can lead to a condition called iron deficiency anaemia, the most common form of anaemia. Here, the blood lacks the iron it needs to make haemoglobin, a protein required for creating red blood cells which ferries oxygen around the body.

Most people with iron deficiency anaemia actually have few symptoms – typically weakness, fatigue, headaches, breathlessness and a sore tongue.

Anaemia is linked to a number of causes, most commonly blood loss, but, since menstruation is no longer a feature of your life, this is improbable in your case.

It is also often caused by reduced iron absorption, which can occur with coeliac disease, when the lining of the small intestine is damaged by an immune system reaction to the protein gluten, found in bread.

Another possibility is that your diet might be lacking in foods containing iron. The iron supplement you have been prescribed (called ferrous fumarate) contains a form of iron that the body can use to make more haemoglobin.

It is best absorbed when taken on alternate days, so the intestine is not overloaded with iron.

Take with a glass of water or fruit juice (vitamin C aids the body’s absorption of iron).

As for your question about vitamin supplements, I definitely do not believe you should take them – orally or by injection – to help ease your fatigue. There is no evidence that they are of value in this situation.

If iron supplements do not ease your symptoms in a month or so, then return to your GP, who may decide further tests are necessary.

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