No one can tell you what is going to happen to a patient exactly, because every Patient is different. However, the risk are:
A hip fracture can reduce your future independence and sometimes even
shorten your life. About half of people who have a hip fracture aren't
able to regain their ability to live independently.
If a hip fracture keeps you immobile for a long time, the
complications can include:
Blood clots in your legs or lungs Bedsores Urinary tract infection
Pneumonia Further loss of muscle mass, increasing your risk of falls
and injury Additionally, people who've had a hip fracture are at
increased risk of weakened bones and further falls — which means a
significantly higher risk of having another hip fracture.
If you have a hip fracture you are at a higher risk for negative and life threatening complications and decreased independence and quality of life as you can do less (mobility, etc). Therapy and rehab can help you, however the hip is still fractured and if the patient has dementia they generally do not follow all of what the doctor prescribes.