This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fracture Management, Subject name: Orthopaedics
All of the following brace are used in scoliosis except? 
Select and explain. 
A. Milwaukee, B. Risser, C. Boston's, D. Minerva
D: Minerva
Answer: D: Minerva 
Explanation: Minerva cast is used in cervical spine