基本解释撕脱同根派生 英汉例句Objective To introduce a simplified posteromedial approach of the gastrocnemius for reattachment of bony avuision of the PCL from the tibia. 目的探讨膝后腓肠肌内侧入路修复膝关节后交叉韧带(PCL)胫骨撕脱骨折。