hey learner mum,
chiros just crack you, osteos give you a massage (or they have someone who does the massage) on the affected area, before they do any adjustments.
i do believe that osteos are more thorough, and it is more gentle on the body to have the muscles worked on, before any bones are moved. ... comes down to personal preference, avaliability of practitioner and what you can afford. chiro you are looking at between $40 and $60 for a 5 - 10 minute treatment. osteo ism ore like $60 to $80, but you would preobably get a minumum treatment time of 1/2 hour, good ones will give you a full hour.
accupunture might be good too - depends if you can find a good practitioner (as with all modalities). i have had great pain relief and structural realignment with accupuncture, but ive also have treatments that have done nothing really noticeable.
hope that is of some help to you
