The Purpose of the study is to know patients' compliance of drug treatment of osteoporosis after operation of fracture and to compare of accompanying fractures between patients who diagnosed with osteoporosis itself and had the drug treatment of osteoporosis after surgery of periarticular fracture of hip.

In experimental group, consecutive 60 patients who had fracture of femoral neck and trochanter. And in control group, 61 patients diagnosed osteoporosis with drug treatment within the same period in orthopedic department from July 2006 to July 2007. The average age is 73.8 (±6.7) year in experimental group, and 66.6 (±7.46) year in control group. Both groups had at least a year follow-up with drug treatment and had BMD again at least a year later.

BMD test in experimental group showed -3.05 (±1.35) preoperatively and -2.74 (±1.50) in last follow-up. BMD test in control group showed -3.55 (±0.52) in initial administration and -3.10 (±0.87) in last follow-up. The results showed a significant improvement in statistical analysis (p=0.0002, p<0.0001).

The compliance of drug treatment of osteoporosis after operation of periarticular fracture of hip is the same as in patients' diagnosed osteoporosis.