This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Turn-buckle cast is used for ? 
Select and explain. 
A. Fracture shaft humerus, B. Fracture shaft femur, C. Scoliosis, D. Cervical spine injury
C: Scoliosis
Answer: C: Scoliosis 
Explanation: Ans. is 'c' i.e., Scoliosis. Name of the case Use Minerva cast Cervical spine disease Risser's cast Scoliosis Turn-buckle cast Scoliosis Shoulder spica Shoulder immobilisation U-slab Fracture of the humerus Hanging cast Fracture of the humerus Colle's cast Colles' fracture Hip spica Fracture of the femur Cylinder cast Fracture of the patella PTB cast Fracture of the tibia