articular depression
A traumatic displacement of articular cartilage and underlying bone below the normal joint surface level.
Full Definition
An articular depression is a localized area where the joint surface has been driven downward below its normal anatomical level due to traumatic impact. This injury pattern commonly occurs in plateau fractures, particularly in the tibial plateau, where compressive forces cause the articular surface to collapse into the underlying metaphyseal bone. Articular depressions can significantly affect joint mechanics and long-term function if not properly addressed. Treatment typically requires elevation of the depressed segment, bone grafting to support the elevated articular surface, and stable internal fixation to maintain the restoration.
Usage
Usage note: Use specifically for below-normal joint surface displacement, not general articular damage.
In Context
- "The lateral tibial plateau showed significant articular depression requiring elevation and bone grafting." — Operative report
- "CT imaging revealed a 5mm articular depression in the weight-bearing portion of the joint." — Radiology report