Clinical Study On Improvement Of Kyphoplasty For Vertebral Compression Fractures

Objective:. To evaluate the clinical efficacy of balloon kyphoplasty in the treatment of vertebral compression fractures (VCFs) and discuss a credible and briefness measure by analyzing radiological figure of vertebral body.Methods: From April 2002 to April 2004, 29 consecutive procedures were performed in 21 patients who suffered from painful vertebral compression fractures, matastatic tumour and angioma. Each procedure includes bilateral insertion of inflatable balloon, fracture reduction and bone cement augmentation. Preoperative and postoperative symptom levels, variables, complications and radiographic findings were recorded and analyzed with computer, statistics system and software such as image tool, Microsoft access, Microsoft excel etc.Results:1.All 21 patients tolerated the procedure well and reported immediate relief of their back pain in 48 hours (mean follow-up time 8.12 (1.5-19) months).2.The mean loss percent of the anterior, mid and posterior vertebral heights were 36.68?16.22% (5.14-66.04%), 28.74?12.38% (4.74-5.81%), 8.98 + 10.65%(0-36.58%) preoperatively (PO.001) and 14.17+12.93% (0-52.38%), 16.8 + 7.5% (6.03-32.16%), 6.97+6.11% (0-19.52%) postoperatively (PO.01). The mean recovery rate of the anterior, mid and posterior vertebral heights were 21.98 + 14.34% (2.25-47.12%) (PO.001), 11.94?13.78% (20.18-33.64%) (PO.001), 2.01 ?.28% (8.73-19.61%) (P=0.2585>0.05).3.The mean Cobb angle was unproved from 16.61 ?.77?(-5.9-31.6?) to 8.11 ?7.03?(-0.6-28.2?) and the recovery rate were 8.5 ?.66?(-5.3-27.2?),PO.001.4. The mean area loss percent of the vertebral body in lateral view x-ray was recovered from 26.61 ?10.61%(9.77~46.73%)to 9.41 ?.31%(0.79~ 43.41%),lts recovery rate were 17.20?10.44%(3.32-36.83%),PO.001.1.As a promising minimally invasive surgery, balloon kyphoplasty can restore the vertebral height and correct the kyphosis, and provide early improvement of pain and function as well as spinal alignment in treatment of vertebral compression fractures,2.Choosing two reference vertebrae to reckon the normal height and area of fracture vertebra can calculate its preoperative loss rate and postoperative recovery rate.3.For multiple fractures we should measure the Cobb angle of single vertebra in order to evaluate the efficacy of kyphoplasty.4.The vertebral area in lateral view can become index grading preoperatively and evaluating VCFs postoperatively.5.It is relatively correct that to measure the irregular image of fracture vertebra using the techniques of computer image analysis hi favor of evaluating the efficacy of kyphoplasty.