A six year old child presented with a valgus deformity at his right elbow since 3 years that is gradually progressive.  He has history of cast applied for 6 weeks after fall on outstretched hand 3 years back.  The probable fracture was-
Malunited lateral Condylar fracture of Humerus
Malunited Supracondylar Fracture of Humerus
Posterior dislocation of elbow
Fracture medial condyle of humerus
(Refer: Mohindra’s Fundamentals of Orthopedics, 2nd edition, pg no. 16)
Fractures commonly showing cubitus valgus deformity due to malunion

Fracture lateral condyle humerus
Monteggia Fracture dislocation