No Fracture diagnosed but can't stand.

Dear doctors, 10 days back my father complained too much right leg knee pain. We went to orthopedic doctor. He suggested  it must be hip fracture issue and asked to go for xray and then CT Scan(reports attached). All the reports show normal without any fractures. Doctor asked to take 1 week rest, it will set itself. But still he is not able to walk without our support. He says sometimes he is not able to sit without hip or back support. Current medications are: Nephrotic-ketocheck,qten, febuxtat Antidepressants & neuro- nexito, nexito forte, oleanz 5, quitipin & donep m Iron- ferisome Diuretics- dytor 10 Can you suggest what could be the issue and how to solve the issue because CT shows normal