The following fractures are known for nonunion, EXCEPT:: (A) Fracture lower half of tibia, (B) Fracture of neck of femur, (C) Fracture of scaphoid, (D) Supracondylar fracture of humerus
Answer is D. 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: Tachdjian's Pediatric Ohopedics 3/e, Page 2130-75, 2060; Rockwood and Green's Fracture in Children 6/e, Page 543-86.