ossification centers
Areas where bone formation begins during skeletal development, with predictable timing patterns used to assess pediatric bone age.
Full Definition
Ossification centers are specific anatomical sites where bone formation begins during fetal and childhood development. In pediatric radiology, knowledge of the normal appearance and timing of ossification centers is crucial for interpreting pediatric skeletal imaging and assessing bone age. The hand and wrist are commonly used for bone age assessment because they contain multiple ossification centers that appear in predictable sequences. Primary ossification centers form the shaft of long bones, while secondary ossification centers form at the ends of bones (epiphyses). Delayed or accelerated appearance can indicate endocrine disorders or other medical conditions.
Usage
Usage note: Distinguish from epiphyses, which refer to the actual bone ends.
In Context
- "The ossification centers in the hand appeared appropriate for the patient's stated age." — Bone age report
- "Delayed appearance of ossification centers may indicate growth hormone deficiency." — Pediatric endocrinology consultation