Tardy ulnar nerve palsy is seen in ?: (A) Excision of elbow joint, (B) Fracture of olecrenon process, (C) Cubitus valgus, (D) Cubitus varus
Answer is C. Lateral epicondyle Fracture: Leads to tardy ulnar nerve palsy - Cubitus Valgus deformity followed by non-union of lateral epicondyle fracture. Normal carrying angle of the elbow is 5-15deg of valgus More than this or an asymmetry between the 2 sides is regarded as a valgus deformity. Tardy ulnar nerve palsy- Weakness of the hand with numbness or tingling of the ulnar fingers