Short Term Results of the Cadence Total Ankle Prosthesis: A Dutch Non-Designer Case Series

Abstract

CASE SErIES Check for updates caused by several factors including the ankle joint being difficult to mimic in a prosthesis due to movement in three planes, the constant moving rotational axis in the talus during dorsiflexion-plantarflexion movement, and tibia bone strength rapidly decreasing below the surface [5,6]. Also, the population undergoing TAR is relatively young and ankle osteoarthritis is mostly of secondary origin (i.e. posttraumatic) [3-6]. Furthermore, preoperative coronal plane deformities, common in lateral ligament instability and posttraumatic osteoarthritis, can be challenging to correct. Correction of these deformities is important since it influences the prosthesis survivorship. It can be corrected with techniques such as hindfoot arthrodesis, medial malleolar osteotomy or soft tissue balancing [7,8]. Additionally, TAR is a challenging procedure with a steep learning curve which influences survivorship and complication rates [3,9-12]. Complications associated with TAR are intraoperative malleolus fractures, tendon or nerve lacerations, heterotopic ossification, delayed wound healing, infection, and aseptic loosening [3,4,9-20]. There are still additional developments in TAR designs. The Cadence Total Ankle System (Integra Life-Sciences, Plainsboro, NJ) is a relative new ankle prosthesis introduced in 2016 [21]. To our knowledge, there are no published outcomes of the Cadence ankle prosthesis yet. Our hospital is the first in the Netherlands to use the Cadence prosthesis. Therefore, the aim of this study is to evaluate the short-term outcome of the