Osteopathic physicians are trained in OMT (Osteopathic manipulative therapy) - in addition the full range of diagnostic/therapeutic skill of allopathic (M.D.) physicians.
Personally, I have had some training in OMT (in continuing education seminar) - and have found many of those skill very useful in treating patient with musculoskelatal problems. There are very significant differences in approach between osteopathy and chiropractic physicians. Most important is the fact that chiropractors are limited to maniupulation.
A complete physical examination, and possibly some screening lab work or X-rays would be a start. If your D.O. does not actively do much OMT - he could probably refer you to a D.O. who does or as an alternative - a Physical Therapist who has received training in the techniques.
Having manipulations so frequently for an extended period can cause joint structures to become overly lax - which allow things to keep slipping "in" and "out" all the time.
For information on Osteopathy - here is the website for the American Osteopathic Association
http://www.osteopathic.org/index.cfm?PageID=ost_main
I found you a good article on slipping rib syndrome - this is a case report of a swimmer with slipping rib syndrome:
http://www.pubmedcentral.gov/articlerender.fcgi?tool=pubmed&pubmedid=15970959
Another option is prolotherapy - an injection of a concentrated dextrose solution designed to decrease laxity of connective tissues. It is considered an "alternative medicine approach" which has limited evidence to support it's use
Here is the abstract of a review of this procedure:
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16162983&query_hl=6&itool=pubmed_docsum
and one related to its use for spinal pain
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15863087&query_hl=6&itool=pubmed_docsum
Edited by FamilyPhysician on May 21 2006 at 2:54 PM