Significant pain in left buttock . doing physical therapy for leg muscle strentheniing. will be 88 in 3 weeks. how can i relieve pain?

First you have to have a diagnosis of the problem. If seeing a physical therapist they should be able to determine extend of problem and rehabilitate if only musculature See orthopedic surgeon for a diagnosis and treatment You mention leg strengthening but not in butt area?

Dr Kuitems and another doctor agreed

A number of diagnostic considerations should be answered prior to expecting therapeutic success, as nonspecific physical therapy in senior citizens is rarely helpful. Strongly urge a second opinion from a physiatrist or neurologist.