The Correlation Between MRI Manifestation And Clinical Effects In The Treatment Of Osteoporotic Vertebral Compression Fractures With Percutaneous Kyphoplasty

Objective To explore the correlation between the clinical effects in the treatment ofosteoporotic vertebral compression fractures(OVCF) with percutaneous kyphoplasty andMRI findings of osteoporotic vertebral compression fractures.Methods To study42patients with OVCF were operated by PKP. The patients weredivided into three groups according to the sharp on magnetic resonance image, includingwedge fracture(group A), concave fracture(group B) and flat fracture(group C). To record thevisual analog scale(VAS), kyphosis Cobb angle and vertebral height in preoperation andpostoperation. To measure the signal intensity on MRI of fractures vertebral body andcalculate the rate of signal intensity. To compare the VAS in different kinds OVCF andcompare vertebral height and kyphosis Cobb angle among three groups. To investigatecorrelation between the rate of signal intensity on MRI and VSA.Results The pain of all patients have relieved. The VSA has statistically differencebetween preoperation and postoperation（P＜0.05）. The VSA has no statistically difference inpreoperation and postoperation. The kyphosis Cobb angle has statistically difference betweenpreoperation and postoperation in the group A(P<0.05), has no statistically differencebetween preoperation and postoperation in the group B and C（P>0.05）. Each part of allvertebral body height had improved after operation. The vertebral body height restoration ratehas statistically difference in group B and A, and the same of group A and group C. It has nostatistically difference in groups A and C. The height restoration of anterior border and midleare obvious in group A and group C. In the group B, the middle height restoration of vertebral body is obvious. There is correlation between the rate of signal intensity on MRI and theVSA.Conclusion MRI can reflect the kind and signal intensity of bone marrow edema ofosteoporotic vertebral compression fractures more accurate than X-ray and CT scan. It canprovid accurate information to choose appropriate therapeutic regimen. The wedge fractureand flat fracture are better than concave fracture in vertebral body height restoration. The rateof signal intensity on MRI is related to back pain. The higher signal intensity vertebralcompression fractures has on MRI, the better effects PKP can get.