Assertion: knuckle | /r/HasProperty | hyperextend
Facets:
Source sentences:
text: Hitchhiker's thumb , sometimes called duckbill or Z-thumb, occurs when the thumb’s large knuckle (MCP joint) abnormally flexes while the top knuckle (IP joint) hyperextends.
text: , sometimes called duckbill or Z-thumb, occurs when the thumb’s large knuckle (MCP joint) abnormally flexes while the top knuckle (IP joint) hyperextends.