cortical window
A surgically created opening through the cortical bone to access the medullary canal or facilitate hardware removal.
Full Definition
A cortical window is a controlled perforation through the outer cortical bone layer, typically created with a drill or burr to provide access to the intramedullary space. This technique is commonly employed during nail insertion procedures, hardware removal operations, or when accessing the medullary canal for grafting. The size and location of the cortical window must be carefully planned to minimize stress concentration while providing adequate access. Proper closure or filling of cortical windows is important to prevent stress risers that could predispose to future fractures.
Usage
Usage note: Distinguish from incidental cortical defects; this term implies intentional surgical creation.
In Context
- "A cortical window was created at the nail insertion site to facilitate hardware removal." — Operative report
- "The cortical window was bone grafted to prevent stress concentration at the entry point." — Post-operative care plan