The cause of a dispute

I finished my 6-month physiotherapy treatment 2 weeks ago. At the lastDispute session, the principal therapist told me that there was a dispute among the therapists at the clinic over my case. She explained to me that she did not believe I had a case of a frozen shoulder suggested by her colleague and required to check my date of birth in my record. She did not believe a person of my “age” would have a frozen shoulder before checking my record. I quickly changed the topic and told her that I am confident that I am on the right path of a full recovery.