| 摘要 |
An ankle replacement prosthesis includes a tibial component, attached within a cavity formed in the tibia, and a talocalcaneal component, attached within a slot formed within a talocalcaneal compound, previously formed by fusing the talus and the calcaneus. Preferably, the talocalcaneal component includes a neck, to which a head, having a contact surface engaging a contact surface within the tibial component, is adjustably attached. These contact surfaces may both be spherical, with the contact surface of the talocalcaneal component being formed as a ball fitting within a socket formed by the contact surface of the tibial component, or these contact surfaces may include mating feature that limit inversion/eversion rotation of the foot, while providing for dorsal/plantar rotation thereof. |
| 主权项 |
1. A method for replacing an ankle within a foot, comprising:
a) attaching a tibial component of an ankle replacement prosthesis having a tibial contact surface to a distal end of a tibia; b) forming a talocalcaneal compound by fusing a talus to a calcaneus within the foot; c) forming a slot within the talocalcaneal compound, following step b), extending from a proximal surface of the talus through the talus and through the calcaneus into a lower posterior portion of the calcaneus; d) attaching a talocalcaneal component of the ankle replacement prosthesis, having a talocalcaneal contact surface configured to move in contact with the tibial contact surface, to the talocalcaneal compound with a stem of the talocalcaneal component extending through the slot formed in step c) within the talocalcaneal compound from the proximal surface of the talus through the talus and through the calcaneus into a lower posterior portion of the calcaneus. |
