in either case, disuse is probably the proximal cause of the hip break. the final straw is nearly always an acute trauma whether a fall or a misstep putting awk

in either case, disuse is probably the proximal cause of the hip break. the final straw is nearly always an acute trauma whether a fall or a misstep putting awkward strains on the hip (as might happen in the break-then-fall case). elderly folks who exercise regularly tend to break bones less.