Cartilage Curvature Reshaping: Polydioxanone Plate Versus Suture.
Kamran As'adi1,2, Seyed Jafar Hashemian3,4
1Department of Plastic and Reconstructive Surgery, St Fatima Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. dr.kamran.asadi@gmail.com.
Aesthetic Plastic Surgery
|February 19, 2026
Summary
Polydioxanone (PDS) plates offer superior cartilage reshaping compared to mattress sutures in animal models. This plastic surgery technique provides better control over auricular cartilage curvature for improved aesthetic outcomes.
Area of Science:
- Plastic Surgery
- Biomaterials Science
- Surgical Techniques
Background:
- Cartilage curvature reshaping is crucial in plastic surgery.
- Limited quantitative comparisons exist for mattress sutures versus polydioxanone (PDS) plates in cartilage straightening.
Purpose of the Study:
- To quantitatively evaluate the immediate effects of PDS plates on auricular cartilage curvature.
- To compare PDS plate efficacy against horizontal mattress sutures in an animal model.
Main Methods:
- Fourteen New Zealand rabbits underwent unilateral ear procedures: horizontal mattress suture or PDS plate placement.
- Standardized photographs captured pre- and post-operative ear shapes.
- Quantitative analysis included radius of curvature (ROC), first-order derivative (FOD), and second-order derivative (SOD).
Main Results:
- PDS plates significantly increased the radius of curvature (mean change from 10.91 mm to 36.79 mm) compared to mattress sutures (mean change from 10.80 mm to 17.68 mm).
- PDS plates achieved a greater reduction in both first-order (0.245 to 0.082) and second-order (0.006 to 0.002) derivatives than mattress sutures.
- All quantitative measures indicated superior curvature control with PDS plates.
Conclusions:
- PDS plates demonstrate superior efficacy in controlling auricular cartilage curvature compared to horizontal mattress sutures in this animal model.
- This finding suggests PDS plates may offer an advantageous alternative for cartilage reshaping procedures in plastic surgery.
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