Happy 117th Birthday to Chiropractic!
Today is a big day for our Profession, having achieving it’s 117th birthday.
Let’s review the evolution of the profession as discussed on 2 very high quality medical websites:
The scientific merit of spinal dysfunction and therapeutic benefits of spinal manipulation for neuromusculoskeletal conditions were challenged in the early days of chiropractic. Manipulation has been generally accepted for back pain, neck pain, sciatica, joint problems, sprains, strains, osteoarthritis, herniated discs and other musculoskeletal (MSK) conditions.
Scientific evidence has indicated that spinal manipulation is a safe, mild-to-moderate pain reliever for lower back pain, neck pain and headache, and recent health care guidelines have listed it as a viable treatment option for symptoms that do not respond to self-care. 
Spinal manipulation in chiropractic medicine has evolved greatly since the first high-velocity adjustment performed by D.D. Palmer in the late 1800s. In addition, chiropractors have begun to embrace a variety of other evidence-based approaches to spine problems. Now, techniques include low-velocity adjustments involving the hands and even instruments and machines, and various other adjustments incorporating many specialized and individualized thrusts. 
Modern chiropractic research has started to focus more on the efficacy of specific types of spinal manipulation, including when certain adjustments are performed and how long they are included as part of chiropractic treatment plans.  Besides chiropractors, Doctors of Osteopathy (D.O.) and some Medical Doctors (M.D.) and Physical Therapists (P.T.) also perform spinal manipulation.