metacarpophalangeal joints 基本英英例句 掌指关节原型metacarpophalangealjoint的复数 名词 metacarpophalangeal joint: a joint of a finger when the fist is closedThere is limited published experience regarding intraarticular malunions of themetacarpophalangeal joints.有关掌指关节的关节内畸形的病例有限。