Ponzio Danielle Y, Lonner Jess H
Adult Reconstruction, Rothman Institute at Thomas Jefferson University, Philadelphia, PA.
Am J Orthop (Belle Mead NJ). 2016 Nov/Dec;45(7):E465-E468.
Conversion of unicompartmental knee arthroplasty (UKA) to total knee arthroplasty (TKA) may be relatively simple when tibial resection is conservative during the index UKA. However, with greater tibial resection, conversion to TKA may be complicated by osseous insufficiency, requiring stems and augments, and potentially compromising patient outcomes and TKA durability. Robotic assistance in UKA is shown to enhance the bone preparation accuracy. In our retrospective comparison of polyethylene insert sizes, 8-mm or 9-mm polyethylene inserts were used in 93.6% and 84.5% of robotic (N = 8421) and conventional (N = 27,989) UKAs, respectively. Aggressive tibial resection, requiring tibial inserts ≥10 mm, was performed in 6.4% of robotic-assisted cases and 15.5% of conventional cases. Robotic-assisted UKA more reproducibly achieved accurate and precise conservative resection.
当初次单髁膝关节置换术（UKA）期间胫骨截骨较为保守时，将其转换为全膝关节置换术（TKA）可能相对简单。然而，随着胫骨截骨量增加，转换为TKA可能会因骨量不足而变得复杂，需要使用柄和增强装置，这可能会影响患者的预后以及TKA的耐用性。研究表明，UKA中的机器人辅助可提高骨准备的准确性。在我们对聚乙烯衬垫尺寸的回顾性比较中，机器人辅助UKA（N = 8421）和传统UKA（N = 27,989）分别有93.6%和84.5%使用了8毫米或9毫米的聚乙烯衬垫。在机器人辅助病例中，6.4%进行了需要≥10毫米胫骨衬垫的激进胫骨截骨，而在传统病例中这一比例为15.5%。机器人辅助UKA更可重复地实现了准确且精确的保守截骨。
