U-slab is given for fracture of -
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 .
Femur
Radius
Tibia
Humerus
Management in Orthopedics