[Irreducible dislocations of the metacarpophalangeal joints].

Within a period of twelve years, the authors have treated twelve patients with metacarpophalangeal joint luxations of thumb and long fingers which could not be reposed by conservative treatment. The case reports are presented in order to describe the problems posed by this relatively rare injury, the reasons hindering a reposition, and the treatment methods. This study is intended to underline the importance of early diagnosis and immediate surgical treatment in order to maintain the function of the joint.