metaphyseal corner fracture
A characteristic fracture pattern at the growing end of long bones, highly specific for non-accidental trauma in infants.
Full Definition
Metaphyseal corner fractures, also known as classic metaphyseal lesions (CML), are fractures that occur through the metaphysis of growing bones in infants and young children. These fractures appear as small corner or bucket-handle shaped fragments at the ends of long bones and are caused by shearing forces applied to the extremities during violent shaking or pulling. They are considered pathognomonic for non-accidental trauma when found in non-ambulatory children. The fractures occur through the primary spongiosa, the weakest part of the growing bone.
Usage
Usage note: Use the specific term rather than the generic 'metaphyseal fracture' for accuracy.
In Context
- "Bilateral metaphyseal corner fractures of the distal femurs were identified on the skeletal survey." — Radiology report
- "The presence of metaphyseal corner fractures in a non-ambulatory infant is highly concerning for abuse." — Clinical assessment