“…[21][22][23][24][25][26][27][28][29][30][31][32][33] Nine of these were based on case series 21,23,[25][26][27][28][29][30]32 and 4 were of prospective design. 22,24,33,34 The lack of standardized patient inclusion criteria and outcome measures makes comparison difficult; nevertheless, improvement after decompression surgery was reported using objective 2-point sensory testing in 10 studies, 21,22,24 -26,29 -33 subjective improvement of sensation and pain in 8 studies, 22,25-27,29 -32 recovery or prevention from development of ulcers in 3 studies, 23,27,28 and reduction of pain medication in 2 studies.…”