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X-ray films are really a photo of the shadow cast by x-rays as they pass through the body and are blocked by certain tissues. Those tissues that block x-rays, like bones, are called radio-opaque. Many tissues sre not radio-opaque and so do not show up on x-ray films.
X-rays only show bones, not the muscles, nerves, ligaments and other soft tissues that make up 95% of the body and are the most usual cause of symptoms. So x-rays are only useful in cases such as suspected fracture, bone infection, congenital anomaly, and some degenerative conditions.
There are other imaging examinations, such as MRI scans, which may be more appropriate than an x-ray. But all these techniques have their limitations. Such investigations, if needed, should only be ordered after a thorough case history and examination to ensure that the relevant investigation is ordered.
In 90% of cases, the case history and examination provide enough clinical information to arrive at a diagnosis. If your osteopath thinks x-rays or other investigations are needed, he will refer you for them
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