“…Numerous studies have found favorable results with PPDD in the treatment of discogenic low back pain and herniated lumbar disc, especially contained disc protrusion [ 6 , 7 , 10 , 12 , 18 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. The success rate of substantial pain relief post-PPDD varies from 6.3% to 84% [ 5 , 24 , 32 , 33 ].…”