metadiaphyseal
Pronunciation: met-uh-die-uh-FIZ-ee-ul
Relating to the region between the metaphysis and diaphysis of a long bone, a common location for primary bone tumors.
Full Definition
The metadiaphyseal region represents the junction between the metaphysis (the wide portion of a long bone adjacent to the growth plate) and the diaphysis (the shaft). This anatomical area is clinically significant in orthopedic oncology as it represents a frequent site for primary bone malignancies, particularly osteosarcoma. Tumors in this location present unique challenges for limb salvage procedures due to proximity to joint structures and the need to preserve growth potential in pediatric patients.
Usage
Usage note: Often hyphenated when used as a compound modifier (metadiaphyseal-epiphyseal).
In Context
- "The MRI revealed a metadiaphyseal lesion extending proximally from the distal femur." — Radiology report
- "Metadiaphyseal tumors require careful consideration of growth plate preservation in skeletally immature patients." — Surgical planning note