Comparison of the effectiveness and safety of unilateral and bilateral percutaneous vertebroplasty for osteoporotic vertebral compression fractures: A protocol for systematic review and meta-analysis

BACKGROUND: The objective of this study was to compare the efficacy of lateral and bilateral percutaneous vertebroplasty (PVP) in treating osteoporotic vertebral compression fractures (OVCFs). METHODS: A comprehensive literature search was performed using PubMed, Cochrane Library, EMBASE, CMB, CNKI, Wanfang, and VIP databases between January 2014 and December 2020. The clinical efficacy of the 2 approaches was evaluated by comparing perioperative outcomes (operation time, X-ray exposure time, volume of injected cement), clinical outcomes (degree of vertebral height restoration, improvement of Cobb angle, visual analogue scale score, and Oswestry Disability Index scores), and operation-related complications (rate of cement leakage, adjacent vertebral fracture rate, and nerve root stimulation). Data were analyzed using RevMan 5.3.3 and Stata 15.1. RESULTS: A total of 237 related articles were retrieved, and 17 randomized controlled trials were included. Meta-analysis results showed that compared to bilateral PVP, unilateral PVP led to decreased operation times (mean difference [MD] = −15.24, 95% confidence interval [CI]: [−17.77, −12.70], P < .05), decreased X-ray exposure time (MD-8.94, 95% CI[−12.08,−5.80]; P < .01), decreased volumes of injected cement (MD-1.57, 95% CI[−2.00,−1.14]; P < .05), and lower incidence of cement leakage (risk ratio [RR] = 0.6,95% CL[0.48,0.77], P < .01). Patients that underwent unilateral PVP experienced more effective pain relief at the last follow-up (MD-0.09, 95% CI [−0.15,−0.03];P=.006 < .05) and had a low degree of vertebral height restoration (MD-0.38, 95% CL [−0.71, −0.06]; P=.02 < .05). However, no differences in adjacent vertebral fractures (RR 1.19, 95% CI [0.78,1.82]; P = .41 > .01), nerve root stimulation (RR 1.98, 95% CI [0.22, 17.90]; P = .54 > .01), improvement of Cobb angle (MD = −0.18, 95% CI [−0.49, 0.13], P = .26 > .01), and improvement of ODI score (MD = 0.22, 95% CI[−0.37, 0.80], P > .05) were found between the 2 approaches. CONCLUSIONS: Although both unilateral and bilateral PVP can improve the quality of life of this patient population by managing pain effectively, unilateral PVP offers more benefits, including shorter operation time and less fluoroscopy, and should be recommended in clinical practice for OVCFs.