DeMars R V, Schenden M J, Manders E K, Graham W P
Ann Plast Surg. 1984 Sep;13(3):195-8. doi: 10.1097/00000637-198409000-00004.
Otoplasty should restructure the cartilage framework of the ear with permanent results. Major techniques include the placement of permanent sutures, with or without concomitant cartilage scoring, and cartilage abrasion alone. Our study evaluates the durability of the results of each method. Fifteen New Zealand white rabbits were divided into two groups. In 10 rabbits, the posterior surface of the right ear cartilage was abraded, and the ear was folded forward and secured with nylon stitches. A similar procedure was performed on the left ear, omitting the cartilage abrasion. In 4 rabbits, both ears were abraded transversely on the posterior cartilaginous surface and no sutures were placed. In 1 rabbit only the posterior skin was undermined on both ears. For one week dressings maintained a right-angle fold at the operative site. Rabbit ears reshaped with abrasion only failed to maintain the desired conformation. Ears with suture and abrasion did not maintain the full 90-degree angle created at surgery, although they did not fully straighten. Ears reshaped with suture alone maintained a folded angle close to the original right angle. Three months after operation the sutures within the cartilage were removed to approximate the clinical situation of late suture disruption from trauma to the operated ear and the shape was assessed.
耳部整形术应重塑耳部软骨框架以获得永久性效果。主要技术包括放置永久性缝线，可伴有或不伴有软骨划痕，以及单独进行软骨磨削。我们的研究评估了每种方法效果的持久性。将15只新西兰白兔分为两组。在10只兔子中，右侧耳软骨后表面进行磨削，耳朵向前折叠并用尼龙缝线固定。左耳进行类似操作，但省略软骨磨削。在4只兔子中，双耳软骨后表面横向磨削且不放置缝线。在1只兔子中，双耳仅对后皮肤进行潜行分离。敷料在手术部位维持直角折叠一周。仅通过磨削重塑的兔耳未能维持所需形态。有缝线和磨削的耳朵虽未完全伸直，但未维持手术时形成的完整90度角。仅通过缝线重塑的耳朵维持了接近原始直角的折叠角度。术后三个月，去除软骨内的缝线以模拟手术耳受创伤后晚期缝线断裂的临床情况，并评估形状。
