Does Hip X-Ray for My One-Year-Old Affect Future Health? - Radiology

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My baby is one year and one month old. Will having a hip joint examination affect their future health?


Hello doctor, my baby is one year and one month old.
A few weeks ago, we went to National Taiwan University Hospital for hip X-rays, where four images were taken: three from the side and one from the front, which also captured the genital area.
I have a few questions:
First, given that my baby is so small, will taking three side images and one front image have any impact on future health?
Second, what is the radiation dose from a hip X-ray?
Third, since the genital area was captured, will this have any effect on future fertility?
Fourth, my baby was moving a lot during the procedure, and while taking the side images, the staff applied significant pressure while the baby was lying flat with bent legs.
Could this excessive pressure cause a previously non-dislocated hip joint to dislocate?
Fifth, does taking multiple X-ray images pose a risk of damaging cells and causing mutations?

A-Jia, 30~39 year old female. Ask Date: 2016/05/16

Dr. Sun Shengyi reply Radiology


For a one-year-old baby, the radiation dose from a single pelvic X-ray generally does not exceed 0.01 millisieverts, and taking four X-rays is unlikely to have any impact on future health.
However, since radiation exposure is cumulative, unnecessary imaging should still be avoided whenever possible, especially concerning the reproductive organs (though it is difficult to avoid during pelvic imaging).
While children are more susceptible to radiation damage, the doses they receive are relatively low, and having four X-rays does not raise concerns about cellular damage.
While excessive force could potentially lead to dislocation, it is not necessary to apply such force to hold a squirming baby, and it should not result in dislocation.
It is advisable to monitor the baby's joint movements to determine if there is any risk of injury.

Reply Date: 2016/05/16

More Info


When it comes to the health implications of X-rays for young children, particularly for your one-year-old who recently underwent hip X-rays, it's understandable to have concerns. Let's address your questions one by one, providing clarity based on medical knowledge and guidelines.

1. Impact on Future Health: The amount of radiation exposure from a hip X-ray is relatively low. For a typical hip X-ray, the radiation dose is approximately 0.01 to 0.1 millisieverts (mSv) per image. Given that your child had four images taken, the total exposure would still be within a safe range. The consensus in the medical community is that the risk of developing future health issues, including cancer, from such low levels of radiation exposure is minimal. Children are indeed more sensitive to radiation than adults, but the doses involved in standard X-ray procedures are considered safe when performed judiciously.

2. Radiation Dose from Hip X-Ray: As mentioned, the radiation dose for a hip X-ray is quite low. For infants and young children, the effective dose is generally lower than that for adults due to their smaller body size. In your case, the total exposure from four images would likely not exceed 0.4 mSv, which is comparable to the amount of natural background radiation a person receives in a few days.

3. Impact on Reproductive Health: It is important to note that while the X-ray may have included the reproductive area, the radiation dose to that region is still very low. Current research indicates that such low doses of radiation do not have a significant impact on future reproductive health. The risk of any adverse effects on fertility or reproductive development from a single X-ray exposure is considered negligible.

4. Concerns About Pressure During the X-Ray: Regarding the concern that the technician may have applied too much pressure while positioning your child, it is essential to understand that X-ray technicians are trained to handle patients gently and safely. While excessive pressure could theoretically cause discomfort or injury, it is unlikely that it would lead to dislocation of the hip joint unless there was a pre-existing condition. If you notice any unusual behavior or signs of discomfort in your child following the procedure, it would be wise to consult your pediatrician for further evaluation.

5. Cellular Damage from X-Rays: X-rays do have the potential to cause cellular damage due to the ionizing radiation they emit. However, the doses used in medical imaging are carefully controlled and monitored to minimize any risk. The likelihood of significant cellular damage or mutations from a few X-ray images is extremely low. The body has mechanisms to repair minor damage caused by radiation, and the risk of long-term effects from such low doses is considered minimal.

In summary, while it is natural to be concerned about the health effects of X-rays on your child, the evidence suggests that the exposure from the hip X-rays is low and unlikely to cause future health issues. It is always advisable to discuss any concerns with your child's healthcare provider, who can provide personalized guidance based on your child's medical history and current health status. Regular monitoring and appropriate imaging when necessary are crucial for ensuring your child's health and well-being.

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