[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.
action of a group G on a sphere, it is natural to ask if the action can in some sense be realized as a single or multiple suspension of an action on a lower-dimensional sphere. In many cases the answer to such questions have extremely far-reaching implications for problems of independent interest. For example, the entire classification theory of free involutions on spheres is built around the desuspendability question (compare Lopez de Medrano [25], Browder-Livesay