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Table 2 Vertebral approach,size of needle used and amount of cement injected

From: Analysis of percutaneous vertebroplasty—a prospective study

Approach No. of procedures Size of needle used Mean amount of cement injected(in ml) Standard deviation Amount of pain relief unipedicular versus bipedicular and amount of cement injected (p value)
Unipedicular 44 13 G 5.3 1.5 P = 0.4 (Insignificant)
Bipedicular 6 13G 7.3 1.7