英语语法分析

Left hemilaminectomy was performed to excise the tumor.

采取左侧半椎板入路全切除肿瘤。

Left hemilaminectomy was performed to excise the tumor.

经左侧半椎板入路全切除肿瘤。

Objective: to evaluate the advantages and disadvantages of hemilaminectomy for the removal of intraspinal tumors.

目的：探讨半椎板切开入路切除椎管内肿瘤的优缺点。