layoff bowling for now and go see an orthopedic specialist.

I go to the chiropractor once a month to keep things where they should be.  I did fall last year while bowling and landed hard on my knee.  Was getting a lot of pain in my knee while bowling after that night.  I mentioned it to my chiropractor one visit and he took a look at it and was able to manipulate it back into place.  I haven't had a problem again with it since.  He also does wonders for Carpal Tunnel.  My wrist does not bother me as bad now, especially if I am bowling multiple times in a week.
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It's not the ball, it's the man.

I've gone to the chiropractor over the years for many issues. I would highly recommend you seek out a reputable one & don't put off going. I have been helped on every occasion.
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Righty
Think about it!

The trouble with our liberal friends is not that they are ignorant, but that they know so much that isn't so. Ronald Reagan

I went to the chiropractor after a car accident that left my neck and upper back in a knotted state.  After a few adjustments, I felt better than I did during the 5 months of "traditional" care I had received prior.  My traditional care regimen included upper body massage, physical therapy (exercises), and ultrasound massage.  It wasn't until the chiropractor put the misaligned vertebrae back into place that the pain was eliminated at its source.

Muscle pain can result from pinched or compressed nerves due to a subluxation (misalignment).  Depending on where the compression is occurring, there might be other physiological issues occurring that you don't necessarily attribute to the back pain - digestive issues, organ function, etc.

Traditional medicine has a fatal flaw in that treatment of the symptoms takes precedence over treating the cause.  It's like trying to stop a forest fire without stopping the kid who is lighting the matches.
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Namaste.
Scolaí
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)O(

Scolaí <--- The bowler formerly known as Pin-nut.