<prompt> The following fractures are known for nonunion, EXCEPT:Fracture lower half of tibiaFracture of neck of femurFracture of scaphoidSupracondylar fracture of humerus  <response>: The distal humeral metaphysis supracondylar area is a well vascularized area with remarkably rapid healing and nonunion of a supracondylar fracture is extremely rare. Non union is almost never seen without infection open wounds and or extensive soft tissue devascularization. Ref: Tachdjians Pediatric Ohopedics 3e, Page 2130-75, 2060; Rockwood and Greens Fracture in Children 6e, Page 543-86. 