Malunion of the supracondylar fracture of the humerus in children results
High-Yield Explanation
(Cubitus varus deformity) (599-Apley's 8th)* Malunion is the commonest complication of a supra condylar fracture and results in a cubitus varus deformity (Gun-stock deformity)* This is because the fracture unites with the distal fragment tilted medially and in internal rotation* Cubitus valgus deformity results from fracture lateral condyle of humerus. This may result in late ulnar nerve palsy (Tardy-ulnar nerve palsy)