Ojala K, Sorri M, Sipilä P, Vainio-Mattila J
Arch Otorhinolaryngol. 1982;234(1):37-43. doi: 10.1007/BF00453536.
In this study the preoperative and early and late postoperative volumes of ear canals of 131 operated chronic ears were measured by filling the ear canals with saline solution. The ears were operated on using the Palva method of obliteration of the operative cavity and reconstruction of the ear canal after removing the posterior, bony canal wall at operation. The average preoperative ear canal volume (V0) was 0.8 ml, the early postoperative volume (V1) was 1.0 ml, and the late postoperative volume (V2) was 1.2 ml. There was significantly more widening of the volume of the ear canals in the ears with a larger (greater than 7 ml) operation cavity as compared to ears with smaller (3-7 ml) operation cavity (p less than 0.05). Widening of the ear canals was smaller in the 12 ears with obliteration of the surgical cavity with musculoperiosteal flap and anorganic bone (Ossar) as compared to the 119 ears obliterated with musculoperiosteal flap only, but the difference was not statistically significant (p greater than 0.05).
在本研究中，通过向131例接受手术的慢性耳的耳道内注入盐溶液来测量术前、术后早期和晚期的耳道容积。手术采用帕尔瓦（Palva）法，即在手术中去除后骨性耳道壁后，闭塞手术腔并重建耳道。术前耳道平均容积（V0）为0.8毫升，术后早期容积（V1）为1.0毫升，术后晚期容积（V2）为1.2毫升。与手术腔较小（3 - 7毫升）的耳朵相比，手术腔较大（大于7毫升）的耳朵耳道容积增宽明显更多（p小于0.05）。与仅用肌骨膜瓣闭塞手术腔的119只耳朵相比，用肌骨膜瓣和无机骨（Ossar）闭塞手术腔的12只耳朵耳道增宽较小，但差异无统计学意义（p大于0.05）。
