U-slab is given for fracture of -: (A) Femur, (B) Radius, (C) Tibia, (D) Humerus
Answer is D. Traction by gravity - This applies only to upper limb injuries. Thus, with a wrist sling the weight of the arm provides continuous traction to the humerus. For comfo and stability, especially with a transverse fracture, a U-SLAB of plaster may be bandaged on. REF:Apley&;s system of ohopaedics- 9th edn- pg no 697 .