Abstract:

Objective　To establish a digital classification system based on AO classification for floating knee injury. Methods　The data of 100 adult patients with floating knee injury admitted to Binzhou Medical University Hospital from March 2005 to December 2020 were retrospectively analyzed, including 74 males and 26 females, with an average age of 43.74 years old. The distribution of the affected limbs in them was 54 cases (54.0%) on the left side, 43 cases (43.0%) on the right side, and 3 cases (3.0%) on both sides. The femur and tibia were divided into three parts separately in this system based on AO classification, which had six types after partial combination. The patients' images in this study were analyzed by using the classification to summarize the distribution rule of the classification in floating knee injury. The count data were measured by χ² test. Results　The proportions of type Ⅰ-Ⅵ injury were 42.7% (44/103) for type Ⅰ, 18.4% (19/103) for type Ⅱ, 9.7% (10/103) for type Ⅲ, 10.7% (11/103) for type Ⅳ, 11.7% (12/103) for type Ⅴ, and 6.8% (7/103) for type Ⅵ, respectively. There were no statistically significant differences in the gender (χ²=6.068, P>0.05) and injury side (χ²=0.658, P>0.05) among different injury types. Conclusion　The digital classification system of floating knee injury based on AO classification can classify most cases of floating knee injury and cases with open injury, which refers a reference effectively for the selection of surgical treatment plans and is more conducive to prognosis evaluation and academic exchange.

Key words:

Floating knee injury, Femoral fracture, Tibial fracture, Digital classification, AO classification

摘要：

目的　建立一种基于AO分型的浮膝损伤数字化分型体系。方法　回顾性分析2005年3月至2020年12月滨州医学院附属医院收治100例成年浮膝损伤患者的资料。其中，男74例，女26例；平均年龄43.7岁；左膝54例（54.0%）、右膝43例（43.0%）、双膝3例（3.0%）。新的数字化分型按照AO分型将股骨及胫骨各分成三部分，按照部位组合后共重新编排成六种分型。通过应用该分型对所纳入病例的影像学结果进行分析，以总结该分型在浮膝损伤中的使用范围及分型分布规律。计数资料采用χ²检验。结果　Ⅰ～Ⅵ型损伤比例分别为Ⅰ型42.7%（44/103）、Ⅱ型18.4%（19/103）、Ⅲ型9.7%（10/103）、Ⅳ型10.7%（11/103）、Ⅴ型11.7%（12/103）、Ⅵ型6.8%（7/103）。不同损伤分型患者在性别（χ²=6.068，P>0.05）、受伤侧别（χ²=0.658，P>0.05）方面差异均无统计学意义。结论　基于AO分型的浮膝损伤数字化分型体系能够对大部分浮膝损伤以及合并开放伤病例进行分类，能有效地为手术治疗方案的选择提供参考，更有利于评估预后及学术交流。

关键词:

浮膝损伤, 股骨骨折, 胫骨骨折, 数字化分型, AO分型