Fig. 2

Design of the MACDVC-AM. a Front view and lateral view of the MACDVC-AM. 1: supporting structure; 2: handle structure; 3: small windows; 4: nail channels; 5: an internal support structure; 6: windows for inserting bone grafts; 7: artificial articular ball; 8: articular trough structures; 9: three grooves on the artificial articular ball; 10: the three blocks on the articular trough structure. The artificial articular ball (7) and articular trough structures (8) constitute a hemispherical socket joint (ball-in-trough structure); three grooves (9) and three blocks (10) constitute the anti-dislocation mechanism. b–d The assembling process of the MACDVC-AM. Firstly, assembling the blocks (10) along the grooves (9); Secondly, rotating 60° to reach the standard position so that the articular ball is wholly embedded in the articular trough