Suggest Treatment For Multiple Compression Fractures

Hi - I have suffered multiple falls and multiple compression fractures. 9 days ago I underwent balloon kyphoplasty at L2 and L3 for compression fractures. The results are amazing. No more pain there. But the pain from L4 to S1 has become significantly worse and though there are no fractures there, the pressure is unbearable there. Would it be possible to have "prophylactic kyphoplasty" at these levels to strengthen these disks? My bones are too brittle and osteoporotic to accept any hardware.