Fell, Left Hip. Pain Was SEVERE Bout 6 Months. Therapy:

Fell, left hip. Pain Was SEVERE bout 6 months. Therapy: warm water pool, dry needle therapy helped loosen up muscles. Finally able to walk without SEVERE pain. Continued regular therapy till Dec 2015. Pain Less now with Lots of rest. Buckling, pain and weakness with too much activity. Leg seems heavy. MRI shows nothing. Osteoporosis, mass 88percent. Med: Evista 60mg & 1200 calcium a day. Doc says Hip replacement, but not now. Says my pain is not bad enough and He said it would not stop the Buckling. Is it true that replacement won't stop the buckling. Terrified of falling. Leg gave way already