Thanks for posting your query.
in the arm and feeling of heaviness in the arm could be due to a nerve
compression at the level of shoulder joint or the cervical spine
A site of problem. Sometimes mild inflammatory swelling can cause the symptoms which improve after the inflammation subsides.
You can avoid all the overhead activities and start taking methylcobalamin
supplements after consulting your orthopedician for symptomatic improvement.
I hope this answers your query.
In case you have additional questions or doubts, you can forward them to me, and I shall be glad to help you out.
Please accept my answer in case you do not have further queries.
Wishing you good health.
Dr. Praveen Tayal.