Conclusions
lumbar OVCFs, vessel injury, pain
The unilaterally extrapedicular approach appears to be a promising method to perform kyphoplasty for patients with lumbar OVCFs. It combines the advantages of unilaterally and bilaterally transpedicular approaches, with effective pain relief, adequate cement infusion, short operation time, less fluoroscopy exposure, and comparable risk of cement leakage and vessel injury. It is a viable option for carefully selected patients with lumbar OVCFs.