<prompt> Turn-buckle cast is used for -Fracture shaft humerusFracture shaft femurScoliosisCervical spine injury  <response>: Turn- buckle cast and Risser;s cast are used in case of SCOLIOSIS. Minerva cast- cervical spine disease. U-slab or hanging cast- fracture of humerus. Hip spica - fracture of femur. REF:Essential ohopaedics- Maheshwari-5 th edn- pg no 17. 