inaccuracy 与 successful 是否矛盾？

Similar to glenohumeral joint injections, several studies have shown that the blind technique for AC joint injection is inferior to image-guided techniques [35–39].One mechanism that has been suggested for the difference in palpation versus image-guided techniques is the relatively small space of the joint and the variation of the anatomy amongst individuals. On average the rates of inaccuracy for successful blind intra-articular ACJ was between 40 and 70% in comparison with a near 100% success rate for both fluoroscopy and ultrasound guided techniques in the studies mentioned above.

与盂肱关节注射相似，几项研究表明，盲法AC关节注射劣于图像引导技术[35-39]。针对触诊与图像引导技术的差异，提出的一个机制是关节空间相对较小和个体间解剖结构不同。在上述研究中，盲法关节内ACJ成功的平均不准确率在40%～70%，而透视和超声引导技术的成功率接近100%。

inaccuracy 与 successful 是否矛盾？