What it is (overview)

An XR Bone Survey Infant (also called an infant bone survey or pediatric skeletal survey) is a set of X-ray images taken of an infant’s entire skeletal system. Unlike a single X-ray of one body part, a bone survey is a carefully planned series of views that helps doctors examine many bones—typically including the skull, spine, ribs, pelvis, arms, hands, legs, and feet.

This test is a type of diagnostic imaging used to look for:

• Fractures (new or healing)
• Bone abnormalities (shape, density, or growth changes)
• Signs of metabolic or genetic bone disease
• Findings that may raise concern for non-accidental trauma (as part of a child abuse assessment)

What the results mean: A radiologist (a doctor trained to interpret imaging) reviews the X-rays and provides a report. Results may be described as normal (no fractures or concerning bone changes seen) or may identify specific findings, such as a fracture location, whether it looks acute (recent) or healing, and whether there are patterns of injury or bone changes that suggest an underlying condition. The bone survey does not by itself determine the cause of an injury; instead, it provides objective imaging information that your child’s healthcare team combines with the medical exam and history.

Because this test uses X-rays, it involves a small amount of radiation. Pediatric imaging protocols are designed to use the lowest radiation dose possible while still obtaining clear images.

When & why it's usually done

Doctors most often order an XR bone survey in infants when there is concern for injury, unexplained symptoms, or a medical condition that can affect bone strength. It may be recommended for early detection of fractures or bone disease—especially when an infant cannot communicate pain clearly and injuries may not be obvious on physical exam.

Common reasons an infant bone survey may be ordered include:

• Possible fracture or injury: swelling, decreased movement of an arm/leg, pain with handling, or a limb that seems tender.
• Unexplained bruising or concerning skin findings in a non-mobile infant.
• Symptoms that may suggest rib fractures: breathing discomfort, irritability with holding, or chest wall tenderness (sometimes fractures are not visible externally).
• Evaluation for non-accidental trauma: when the pattern of symptoms or injuries does not match the reported accident, or when there are high-risk concerns. This is a medical safety assessment to look for hidden injuries and protect the child’s health.
• Abnormal lab results or growth concerns that raise suspicion for metabolic bone disease (for example, low vitamin D, abnormal calcium/phosphate levels, or poor weight gain).
• Known or suspected bone fragility disorders (genetic or acquired), especially if fractures occur with minimal trauma.
• Follow-up imaging: in some situations, doctors may repeat part of the survey after 1–2 weeks to look for healing changes that make fractures easier to see.

During the exam, your infant is positioned carefully for each image. The technologist may use gentle supports to help keep the baby still so the images are clear. You may be asked to wear protective shielding if you stay in the room, depending on facility policy and safety rules.

Common diseases related to it

• Accidental fractures (for example, from falls or other injuries)
• Non-accidental trauma (suspected physical abuse) and occult (hidden) fractures
• Osteogenesis imperfecta (brittle bone disease)
• Rickets (often related to vitamin D deficiency)
• Metabolic bone disease of prematurity (osteopenia of prematurity)
• Osteopenia/low bone mineral density in infants
• Skeletal dysplasias (genetic disorders affecting bone growth and shape)
• Healing fractures and fracture complications (alignment concerns during healing)
• Bone infection (osteomyelitis), when findings suggest bone involvement

Health goals where it may help

• Detecting fractures early to guide timely treatment and pain control
• Assessing the full skeletal system for hidden injuries when safety concerns exist
• Supporting a complete pediatric health evaluation when symptoms are unexplained
• Identifying bone abnormalities that may indicate vitamin/mineral deficiency (e.g., vitamin D-related bone changes)
• Monitoring bone healing and recovery after an injury
• Evaluating bone strength and growth patterns in suspected genetic or metabolic bone disorders
• Helping clinicians create a safe care plan and appropriate follow-up (pediatrics, orthopedics, endocrinology)