Logo for a chiropractic office

Feminine
Modern
Youthful
Professional

black or dark background if possible. If not, it better be good enough to caught my attention.

not sure

The logo is targeted to families with children. It is intended to be for a pediatric chiropractic office. I like some of the pictures that pop up in sciencephoto.com when you type "infant's nervous system" but I haven't been able to figure out how to put this on a logo, this is why I am asking for the logo design service. Include a child and a grown person, the grown person and the child should not have a specific gender but if needed the adult can be a male, not a "mom" female. Having the central nervous system (a representation of the brain and spinal cord) is a must, having the rest of the spine will be a plus. If you have a representation of the entire spine make sure to include the appropriate spine curves for the age. I just don't want the regular chiropractic propaganda out there where people believe chiropractors are only good for low back pain. I want to project that chiropractic can help with children and adult's neurology and nervous system interference. Our doctors of chiropractic focus on "neural restoration" and would like to see this represented in the logo. I would prefer a black or dark background but you can give me options if you think something else will look better.