Hello there.... Forzen shoulder is a common condition after 60 years ....it is more common in diabetic patients.... there are 3 basic principals to follow in case of Frozen shoulder.....
1) keeping
sugar levels in check
2)minimize pain
3)improve range of motion
4)improve strength
1st condition can be taken care by a physician...for the other 3 points a physical therapist is a must.
Remember Adhesive capsulitis/Frozen shoulder is a considerably poor prognostic condition so overnight miracles should not be expected.A recovery of frozen shoulder is slow and takes 3-5 months to be fully fit.
During this time symptomatic treatment should be carried out through electrotherapy and ROM exercises /mobilization technique.to make the patients lifestyle as optimum as possible.
Do write to me in detail regarding your fathers condition in detail also x rays and
calcium levels are to be rechecked.