metacarpophalangeal
adjective medical specialized uk/met.əˌkɑː.pəʊ.fəˈlæn.dʒi.əl/ us/ˌmet̬.əˌkɑːr.poʊ.fəˈlæn.dʒi.əl/
掌指骨
relating to the metacarpals (= the five bones between the fingers and the wrist) and the phalanges (= the small bones of the fingers)
metacarpophalangeal joints 掌指骨关节