Tardy ulnar nerve palsy is associated with which of the following deformity ?

TARDY ULNAR NERVE PALSY : may develop after: malunited fractures of the lateral humeral condyle in children, - displaced fractures of the medial humeral epicondyle, -dislocations of the elbow, - - contusions of the nerve. - In malunion of the lateral humeral condyle, cubitus va develops; in this deformity the ulnar nerve is gradually str and can become incompletely paralyzed. -also may develop in patients who have a shallow ulnar groov the posterior aspect of the medial humeral epicondyle,. - hypoplasia of the humeral trochlea, . - an inadequate fibrous arch that normally keeps the nerve in the groove, resulting in recurrent subluxation or dislocation of the .nerve. ref : maheswari 9th ed