DEXA scans in young patients: what to know

Doctors may consider bone-density imaging after a fracture that seems out of proportion to an injury, during long-term use of medicines that affect bone, or with conditions that alter nutrition, hormones, movement or absorption. In children and teenagers, bones are still growing, so the report is not read in exactly the same way as an adult result. Height, growth stage, sex and the reference group used by the service all matter. The scan is one part of an assessment and does not explain every cause of pain or delayed growth.

Tell the team the patient's age, height, recent growth pattern, medicines, supplements, previous fractures and any difficulty remaining still. Mention possible pregnancy in an adolescent or adult patient. Wear comfortable clothing and follow local instructions. A parent or carer may be able to stay nearby, depending on the imaging service. After the scan, ask who will explain the result and whether blood tests, nutrition advice or follow-up with a specialist are planned.

Seek prompt assessment for severe or persistent bone pain, repeated fractures, inability to walk after an injury, or a marked change in strength or movement. Urgent care is appropriate for a major injury, obvious deformity, or sudden weakness or numbness. A DEXA appointment should not delay treatment when a young patient may have an acute fracture.

Ask why the scan is being suggested, which reference standard will be used, whether growth affects interpretation, and what follow-up would be appropriate for this patient.