| Objectives:(1)Studying zhe relationship between bone cement perfusion and clinical efficacy by radiographic assessment and clinical follow-up, after unilateral KyphOPlasty.(2)Studying zhe relationship between bone cement distribution within the vertebral body case and clinical efficacy by radiographic assessment and clinical follow-up, after unilateral Kyphoplasty. (3)probing vertebral height restoration and vertebral kyphosis between clinical efficacy.Methods:We choosed 78 patients of osteOPorotic compression fraCTures by PKP treated in department of spine surgery, XX Hospital from January 2012 to December 2014, included 78 vertebral cases.preoperative examination include Bone density eXamination, thoracic and lumbar X-ray, reconstruCTion CT,MRI and routine physical examination-Recording pain score which includes VAS score and ODI score,image changes.measuring the height at each part of vertebral and Cobb angle.comparing of the degree of pain patients before surgery, radiographic change the situation.patients were followed up for 12 months.We use the comparative method analysis statistical to evaluate the clinical efficacy with bone cement injeCTion amount, the distribution of bone cement after PKP.Results:78 cases of OVCF patients have been treated by PKPsuccessfully,without serious complications in intraoperative and postoperative.All patients received clinical follow-up of 12 months.Bone cement injeCTion amount is 3.76±0.814ml, preoperative VAS score 8.462±0.618, postoperative after3 days is 2.154±0.898, postoperative after 1 year is 1.897±0.594; preoperative ODI score is 67.115±4.679, postoperative after3 days is 28.815±4.908, postoperative after 1 year is 26.562±4.039.preoperative and postoperative three days, preoperative and postoperative 1 year VAS score, ODI index difference were both statistical difference.After 3 days and 1 year after surgery pain score did not change significantly (p>0.05), preoperative vertebral height of the front portion is (12.65±2.652) mm,middle vertebral height is (11.81±1.588) mm, Rearward vertebral height is (23.21±1.121) mm;postoperative after 1 year:ertebral height of the front portion is (17.00±1.690) mm,middle vertebral height is (18.19±1.994) mm, Rearward vertebral height is(23.511±1.159) mm..postoperative vertebral height, middle height and presence of preoperative difference was statistically significant(p<0.05), But vertebral height edge comparison has no difference after the preoperative and postoperative (p> 0.05).preoperative Cobb score is (20.888±3.822)°,postoperative after 3 days is (10.854±3.149), postoperative after 1 year is (10.936±3.080)°,there is statistical differences in Cobb angle change preoperative and postoperative differences.(p<0.05). We analysis VAS score, ODI indeX, preoperative vertebral height of each part changes, Cobb’s angle correlation analysis by the correlation method.there is no related with bone cement perfusion score and VAS, ODI score.Besides,the amount of bone cement and vertebral height, height change central, Cobb angle change is being irrelevant(p<0.05).comparing bone cement and bone cement distribution center laterality distribution group,we find VAS socre and ODI score have no relationship in the same period.(p>0.05), Analysing Cobb angle of vertebral correction rate, postoperative vertebral height, middle height restoration rate,bone cement distribution centers is set higher than the unilateral distribution group..(p<0.05).Conclusion:Unilateral PKP treating OVCF have a good analgesic effect.Unilateral PKP bone cement perfusion and analgesic effect, vertebral height restoration and Cobb angle has no significant correlation..A small amount of bone cement can achieve analgesic effect.there is no significant relationship between the distribution of bone cement and analgesic effect.comparison of bone cement and bone cement group distribution center laterality distribution group, center laterality distribution group, is slightly better at restore vertebral height, Cobb’s angle.there is some correlation between vertebral height restoration and kyphosis Cobb angle and analgesic effeCT.So from a safety point of view of treatment. PKP surgery should be appropriate to the injeCTion of bone cement, bone cement and try to make the uniform distribution center in the vertebral body. |
