Should chiropractors eliminate the cracking with spinal manipulation?

I recently met with one of my colleagues to discuss a modern technology, which enables chiropractors to perform spinal manipulation without causing the audible release or cracking noise. He claimed the technology was more attractive to his patients, especially the individuals who did not appreciate manual manipulation of the neck. It was his opinion that this modern technology, which used sophisticated instrumentation, helped him to detect spinal joint fixations and tr…