Prevention of Autologous Costal Cartilage Graft Warping in Secondary Rhinoplasty

Background: Autogenous costal cartilage grafts (ACCG) are frequently used in secondary rhinoplasty; however, these grafts tend to warp. The objective of this study is to systematically evaluate current interventions to prevent warping of ACCGs and to assess long-term outcomes with their use. Methods: A systematic review was undertaken using a computerized search. Eligible articles assessed adult patients undergoing secondary rhinoplasty with ACCGs. Interventions to reduce warping were examined. Publication descriptors were extracted, heterogeneity was examined, and methodological quality of articles was assessed. Results: Eighteen studies were included. Most studies were published after 2010 (83.3%), assessed a single intervention (83.3%), and were of levels of evidence III and IV. Mean patient age was 30 (range 5-95 years) and studies included a mean of 64 cases (range 9-357). Nine of the 15 non-comparative studies were considered of high methodological quality, while all 3 comparative studies were considered high quality. Secondary rhinoplasties which did not describe a method to address warping showed increased rates of warping compared to counter balancing techniques, chimeric grafts, titanium microplating, Kirschner wire and suture usage, irradiation, and various carving techniques. Rates of warping remained low with no major complications with the use of a variety of approaches. Conclusions: ACCG warping during secondary rhinoplasty can be alleviated with a variety of techniques with no clear difference in outcomes between approaches. Plastic surgeons may consider adopting one of the various techniques described in order to reduce warping, maximize aesthetic outcomes and patient satisfaction.