“用拐杖支撑”可以表达为“support oneself with a crutch” 或者 “lean on a crutch for support” 。
例如：
He has to support himself with a crutch when walking.（他走路时得用拐杖支撑自己。）
The injured man leaned on a crutch for support to move forward.（受伤的男子用拐杖支撑着向前移动 。）