'Tube cast' is applied for which of the following fractures?

Cylinder castor tube cast is used in the treatment of stable injuries of the distal femur, proximal tibia, and knee joint. It is worn for about 6-8 weeks. This cast often used for injuries around the knee, where rotation does not need to be controlled and the foot is to be left free. Ref: Essential ohopedics by Maheshwari 3rd Edition, Page 14, 126; A Complete Hospital Manual of Instruments and Procedures By Kapur, 2006, Page 628; Rockwood and Greens fractures in adults, 2009, Page 154.