Introduction: Osteotomy of nasal bones in rhinoplasty is associated with postsurgical morbidities. Recent evidence has suggested that a surgical method applying piezoelectric ultrasound waves for nasal osteotomies in rhinoplasty reduces soft tissue damage and causes less postsurgical morbidities compared to conventional methods. The purpose of this study is to compare clinical outcomes of piezoelectric and conventional lateral nasal osteotomies in rhinoplasty. Methods: We searched PubMed, CENTRAL, and Web of Science up to 17 August 2019 for studies comparing postoperative outcomes of piezoelectric and conventional lateral osteotomies in rhinoplasty. We included studies comparing results of patients subjected to piezoelectric or conventional lateral nasal osteotomies in rhinoplasty. For outcomes, we considered postoperative pain, eyelid edema, periorbital ecchymosis, and intraoperative mucosal injury. Results: For eyelid edema, a statistically significant difference in favor of piezoelectric osteotomy was documented within the first 3 postoperative days (standardized mean difference [SMD] = –0.65; 95% CI = –1.18, –0.12, p = 0.02; I2 = 69%) and on postoperative day 7 (SMD = –0.69; 95% CI = –1.47, –0.09; p = 0.08; I2 = 85%). This was also the case for periorbital ecchymosis within the first 3 postoperative days (SMD = –0.85; 95% CI = –1.42, –0.28; p = 0.004; I2 = 72%) and on postoperative day 7 (SMD = –0.52; 95% CI = –0.79, –0.24; p = 0.0003; I2 = 71%). Intraoperative mucosal injury (OR = 0.06; 95% CI = 0.01, 0.53; p = 0.01; Ι2 = 0%) and postoperative pain (SMD = –0.99; 95% CI = –1.78, –0.11; p = 0.01; I2 = 49%) were also statistically lower during piezoelectric osteotomies. Conclusions: This study shows that lateral piezoelectric osteotomy in rhinoplasty decreases postoperative pain, edema, ecchymosis, and intraoperative mucosa injuries compared to the conventional osteotomy technique with a chisel. Piezoelectric osteotomies are especially associated with less postoperative edema and ecchymosis in osteotomies not executed under direct vision.

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