 Traction was applied between the L4-L5, L5-S1 screws locking notes were tightened out, heads were rotated fractured off about 2-3 mm traction were applied at each side, further opening the foramen for the exiting roots. 
Traction was applied between the L4 - L5 , L5 - S1 screws locking notes were tightened out , heads were rotated fractured off about 2 - 3 mm traction were applied at each side , further opening the foramen for the exiting roots .