I've had issues a few time but nothing long term or too severe. I believe they were probably just bulging disc and by taking a little time off, seeing a chiropractor, ice, stretches, and so forth I have usually been able to get get back to playing within about 2 weeks though I may have had to take it a little easy for a little bit. I know one of the guys at my club had Stim Cell treatment on his back last year and has been back to playing. I'll ask him how he's feeling. His son, who's about my age, 37, had the stim cell done on his back several years ago. He'd broken it 3 times and said he could barely walk for a few days after playing a round of golf. After the treatment he was able to play 3 rounds over 3 days with no issues and now does crossfit 5 days a week so I'd say that it worked for him.