英语语法分析

Purpose: To improve recognition of roentgenographic findings for Extraskeletal Osteosarcoma.

目的：提高对骨外骨肉瘤的X线表现的认识。

Conclusion Both basic roentgenographic measurements have significant meanings to the diagnosis of chronic ankle instability.

结论前抽屉试验侧位片及内翻应力正位片对于慢性外踝不稳诊断具有重要意义。

Materials and Methods:To investigate 4 cases of disease which clinical was confirmed and has typical roentgenographic findings.

材料与方法：选择临床确诊、X线表现典型4例病例进行分析。