Curved injection needle for unilateral percutaneous vertebroplasty in osteoporotic vertebral compression fractures

English Keywords:Osteoporotic vertebral compression fractures  Percutaneous vertebroplasty  Curved injection needle  Unilateral

English Abstract:

  【Abstract】 Objectives: To investigate the clinical outcomes of unilateral percutaneous vertebroplasty(PVP) by using curved injection needle in osteoporotic vertebral compression fractures(OVCFs). Methods: From January 2015 to January 2016, 47 patients(14 males and 33 females) with OVCFs were enrolled in this study. The patients were 53-89 years old(66.4±6.5 years), 36 cases were single segmental vertebral fracture, 11 cases were double segment vertebral fracture. T9 fracture occured in 7 cases, T10 fracture in 7 cases, T11 fracture in 9 cases, T12 fracture in 13 cases, L1 fracture in 12 cases, L2 fracture in 9 cases, and L3 fracture in 1 case. The fluoroscopy time and bone cement dosage were recorded. The VAS score, ODI, relative height restoration of vertebra and Cobb angle were compared between preoperation and postoperation． The bone cement leakage(venous leakage and perivertebral leakage) and other complications were observed. Results: The average fluoroscopy time was 1.6±0.3min, the average bone cement dosage was 6.7±1.2ml. Bone cement leakage occured in 11 cases with the rate of 23.4%. The patients were followed up for 3-12 months(6.5±1.3 months). The VAS, ODI, the relative height of injured vertebra and the local Cobb angle before operation, at 2 days after operation and final follow-up were: 7.6±1.3, (71.4±3.2)%, 0.48±0.21, 15.5°±4.2°; 2.2±1.0, (27.2±2.6)%, 0.82±0.17, 7.2°±2.8°; 1.7±0.7, (26.5±2.7)%, 0.80±0.15, 7.5°±3.7°. At 2 days after operation and final follow-up, the VAS score, ODI score, the relative height and Cobb angle of injured vertebra were significantly improved when compared to those before operation(P<0.05); There was no significant difference between 2 days after operation and final follow-up(P>0.05). Conclusions: The advantages of unilateral PVP by using curved injection needleless in OVCFs are less fluoroscopy time, even distribution of bone cement, and less leakage.