Welcome to Health Care Magic
Sorry to know of your father's condition. Man and Medicine have great limitations...
Full movements excludes the joint problem - not bone.
Injury is not always from fall - at times, cot railings have caused.
Black / blue is not always injury - IT MAY BE GANGRENE
(clot) is common in cancer of lung, pancreas
and so on / even from prolonged bed rest
. An examination by physician may shed light.