There are several issues to consider regarding your situation.
The os acetabuli found on your hip MRI is fairly common and may or may not be the cause of symptoms in the hip. A significant number of persons with these findings have no symptoms. It appears to be a precursor for osteoarthritis of the hip over time for many people. If there is evidence that it is contributing to the pain in the hip, then surgery may be worth considering. The appropriate specialist to be seen for this would be an Orthopedic Surgeon.
The os acetabuli would not be causing any of the other symptoms that you are having. There certainly could be osteoarthritis forming in other joints, and the finding of mild arthritis in the shoulder can be related to this. Osteoarthritis is the most common form of arthritis, but mild arthritis on MRI does not usually cause significant symptoms. There are many different other forms of arthritis or other inflammatory conditions that also can be present. It is also true that myofascial pain can cause diffuse pain, and myofascial pain can be quite severe. The most appropriate specialist to see to evaluate the cause of the diffuse pain would be a Rheumatologist. A Rheumatologist would also be the most knowledgeable in the appropriate tests to be done to evaluate the problem. The American College of Rheumatology maintains a search engine so that you can find a Rheumatologist near you at http://www.rheumatology.org/directory/geo.asp.
There are many different types of arthritis. Osteoarthritis is primarily due to wear and tear in the joint and would usually not have any positive findings on blood tests. It is possible that the MRI could show osteoarthritis changes, and it would be expected that there would be no abnormal blood tests. Osteoarthritis most often affects the large joints, but it can affect the joints of the fingers Certain other forms of arthritis will have positive results on blood tests and the Rheumatologist would be best at performing the appropriate tests. Yes, you can include the results that have been done so far, so that I can review them.
Degenerative joint disease is another name for osteoarthritis. The diagnosis of osteoarthritis is based upon the findings on physical examination and x-rays.
All of the labs that you included are general lab work. None of these pertain to the evaluation of arthritis. The TSH assesses the thyroid function, and is high in the normal range. The Hgb, Hct, and MCH are measures of red blood cells and are only slightly elevated, so are not worrisome. The BUN and BUN/Cr are measures of kidney function and fluid status, and can be elevated because of mild dehydration. The AST is a liver enzyme, and mild decrease is not a problem. Blood tests to evaluate for arthritis would include sedimentation rate, C-reactive protein, rheumatoid factor, and anti-nuclear antibodies.
A RA level of <15 would be normal.