This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Limb Traumatology, Subject name: Orthopaedics
A Severely comminuted fracture of the Patella that can not be reduced should be treated by: 
Select and explain. 
A. Inseing screws and wires, B. Physiotherapy alone, C. Patellectomy, D. Removal of smallest piece only
C: Patellectomy
Answer: C: Patellectomy 
Explanation: Patella Tube cast may be used Displaced transverse fracture Tension band wiring by K-wires and stainless steel (SS) wire Comminuted fracture At least proximal third of patella is intact--Paial patellectomy Severe comminution--total patellectomy