In reply to your follow up. I started therapy at rehab facility after I had been home for a about 2 weeks and felt I wasn't getting where I needed to be on my own. Oddly enough, I ended up with an Occupational Therapist whose specialty was shoulders, so I was told. Having had years of Physical Therapy, I was skeptical. But I have to say, this gal did a marvelous job with my shoulder and my overall feeling of well being. She did a lot of hands on manual stretches, pulls, adjustments, alignments, and I in turn stayed on her exercise program at home as we progressed. I was sad to end our relationship, but I have done very well and thank her for showing me a new path. I try to stretch daily, and every other day maintain or increase my strengthening program. I feel certain this was a great outcome for me. You asked which arm I used for bowling? The replacement shoulder of course. Now back on my team as a sub, as needed, as I figure things out! Next season I hope to take back my full time slot.