@northglenn Have you talked to your doc and the PT? It sounds like you may have a buildup of scar tissue. If so, it is important to address it as soon as you can - the longer it builds up the harder it is to get rid of.
If you go to the Joint Replacement Support Group https://connect.mayoclinic.org/group/joint-replacements/
and put scar tissue in the search box, you will be able to connect to others who have had this issue.
Sue