Patient-specific instrumentation in total knee arthroplasty.

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Abstract

[Indexed for MEDLINE] 7. World J Orthop. 2022 Mar 18;13(3):230-237. doi: 10.5312/wjo.v13.i3.230. eCollection 2022 Mar 18. Patient-specific instrumentation in total ankle arthroplasty. Mazzotti A(1), Arceri A(1), Zielli S(1), Bonelli S(1), Viglione V(1), Faldini C(1). Author information: (1)The First Orthopaedics and Traumatologic Clinic, IRCCS Istituto Ortopedico RIzzoli, Bologna 40136, Italy. The recent increase in the adoption of total ankle arthroplasty (TAA) reflects the improvements in implant designs and surgical techniques, including the use of preoperative navigation system and patient-specific instrumentation (PSI), such as custom-made cutting guides. Cutting guides are customized with respect to each patient's anatomy based on preoperative ankle computed tomography scans, and they drive the saw intra-operatively to improve the accuracy of bone resection and implant positioning. Despite some promising results, the main queries in the literature are whether PSI improves the reliability of achieving neutral ankle alignment and more accurate implant sizing, whether it is actually superior over standard techniques, and whether it is cost effective. Moreover, the advantages of PSI in clinical outcomes are still theoretical because the current literature does not allow to confirm its superiority. The purpose of this review article is therefore to assess the current literature on PSI in TAA with regard to current implants with PSI, templating and preoperative planning strategies, alignment and sizing, clinical outcomes, cost analysis, and comparison with standard techniques. ©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved. DOI: 10.5312/wjo.v13.i3.230 PMCID: PMC8935326