Metaphyseal corner fracture
Small avulsion fracture at the metaphyseal corner, often associated with non-accidental trauma in infants.
Full Definition
A metaphyseal corner fracture, also known as a classic metaphyseal lesion (CML) or bucket-handle fracture, is a small avulsion fracture occurring at the metaphyseal margin of long bones in infants and young children. These fractures result from twisting or shaking forces that cause periosteal avulsion at the metaphyseal-diaphyseal junction. While they can occur from accidental trauma, they are considered highly specific for non-accidental trauma when found in infants without adequate explanation. The fractures may be subtle on initial radiographs and often require high-quality imaging and careful interpretation by experienced radiologists.
Usage
Usage note: Requires careful documentation and consideration of child protection protocols.
In Context
- "Radiographs demonstrated subtle metaphyseal corner fractures raising concern for non-accidental trauma." — Child protection case documentation
- "The metaphyseal corner fracture pattern was consistent with rotational forces applied to the extremity." — Pediatric radiology report