Finding the right tests…
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Finding the right tests…
X-Ray
This test pictures both elbows, front and side, in the same sitting, so a doctor can set one side against the other. In children, the bones around the elbow harden in a fixed order over several years, and a growth center that has not yet appeared can look like a missing piece of bone. Comparing both sides used to be a routine way to sort out a confusing pediatric film, though current guidance now saves this side-by-side comparison for cases where the injured elbow truly cannot be read alone, since imaging the uninjured joint still means extra radiation without a direct benefit to that arm.
Each elbow is imaged from the front and the side, the same as a single-elbow study, so the two studies can be laid side by side. A radiologist checks whether the growth centers, bone alignment, and joint spaces on the injured side match the normal pattern on the other, rather than reading either elbow alone.
Doctors reach for both elbows together in a narrower situation than a single-elbow film: when the injured side's picture is genuinely hard to read on its own, most often in a child whose elbow bones are still forming.
The elbow has several separate growth centers that harden into visible bone one at a time over roughly the first eleven years of life. A center that has appeared out of its usual order, or one that simply has not shown up yet, can be mistaken for damage unless a doctor has something to check it against.
Comparing an uninjured elbow used to be common practice whenever a pediatric film looked ambiguous. Current guidance treats this differently: imaging a healthy joint has no direct medical benefit to that arm, so this side-by-side comparison is now generally reserved for cases where the injured elbow's own images, checked against standard references, still are not enough to settle the question.
A child's elbow has several growth centers that appear at different ages, and one that has not yet shown up can look like a missing piece of bone. Comparing against the uninjured side can help settle the question when the injured film alone is unclear.
Not routinely. Current pediatric guidance treats this as a selective step rather than a default one, since imaging the healthy elbow adds radiation without directly benefiting that arm. Your doctor will explain why it was needed in your child's specific case.
Any X-ray involves some radiation, and this is part of why the comparison view is used selectively rather than as a routine step. Each view taken uses the lowest amount needed for a clear image.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
They are areas of cartilage around the elbow that harden into visible bone over time, appearing in a fairly fixed order as a child grows. A center appearing early, late, or out of sequence can look similar to an injury on X-ray.
Yes, though it is ordered less often in adults, usually to compare a symmetric condition like arthritis rather than to sort out developing growth centers.
Yes, each elbow is positioned for its own front and side view, the same way a single-elbow study would be taken, so the two sets of images are directly comparable.
Yes, tell your doctor and the technologist about any past elbow injury or previous X-ray, since an old finding can otherwise be mistaken for a new one.