This is how my grandmother on my Moms side died. She fell tripping over a curb, fracturing her hip.
Her bone mass was not sufficient to place needed pins, so she was basically bed ridden and died less than a year later. A co-workers 75 year old mother fell while trying to carry a basket UP the basement stairs, losing balance bad enough she actually fell down 4 steps to the floor. Again breaking her hip. She was quite healthy, still driving and getting around fine... after the fall she lived just under 6 months from an infection caused by inflammation in her hip that was not diagnosed early enough.