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
Patellar tendon bearing cast is indicated in the following fracture: 
Select and explain. 
A. Patella, B. Tibia, C. Medial malleolus, D. Femur
B: Tibia
Answer: B: Tibia 
Explanation: PTB (patellar tendon bearing) plaster, is a carefully moulded patellar bearing below knee plaster which is used in fractures of shaft of tibia In fracture patella cylindrical cast is used