After my rotator cuff surgery 5 yrs AGO the pain only gotten worse and I caint lift my arm over my head what could be the cause And could it be an act of malpractice?

Persistent pain and loss of mobility after rotator cuff surgery could be due to several factors, including improper healing, development of scar tissue, or a possible re-tear of the rotator cuff. It's also possible that the original surgery did not adequately address the underlying issue. To determine if malpractice occurred, it would be important to review your medical records and the standard of care provided by your surgeon. Consulting with a medical malpractice attorney and a specialist in shoulder injuries would provide more clarity on your situation.