Objective To evaluate the effectiveness of percutaneous vertebroplasty(PVP) in the treatment of osteoporotic vertebral compression fractures with or without intravertebral clefts by unilateral approach and the impact of intravertebral clefts on the effectiveness.Methods The clinical data of 65 patients who met the inclusion criteria of osteoporotic vertebral compression fracture were retrospectively analyzed.According to having intravertebral clefts or not,the patients were divided into 2 groups: cleft grou...