PMID- 38226709 OWN - NLM STAT- MEDLINE DCOM- 20240117 LR - 20240117 IS - 1433-7347 (Electronic) IS - 0942-2056 (Linking) VI - 32 IP - 1 DP - 2024 Jan TI - Economic evaluation of high tibial osteotomy: Closing wedge is more cost-effective than open wedge technique when analysing the KOOS-12 improvement. PG - 95-102 LID - 10.1002/ksa.12026 [doi] AB - PURPOSE: The purpose of this study was to compare the cost-effectiveness of two techniques for performing a knee valgus osteotomy: opening wedge high tibial osteotomy (OW-HTO) vs closing wedge high tibial osteotomy (CW-HTO). METHODS: In this economic evaluation study, a cost-effectiveness analysis from the perspective of the Spanish public healthcare system was performed, comparing OW-HTO with CW-HTO. All patients with medial knee osteoarthritis who underwent one of these procedures between 2018 and 2020 in our institution were included. The cost analysis included operating room, implant, graft and hospital admission costs. Functional outcomes (KOOS-12, Tegner activity scale, pain and satisfaction) and radiological outcomes (hip-knee-ankle angle, medial proximal tibial angle, tibial slope and patellar height) were analysed. The cost-effectiveness ratio was obtained by calculating the cost of improving the minimal clinically important difference (MCID) of KOOS-12 for each procedure. All costs are expressed in 2020 euros. RESULTS: Fifty-one patients met the inclusion criteria (27 OW-HTO and 24 CW-HTO). Good to excellent functional outcomes, significant pain reduction (>6 points) and high patient satisfaction (>9/10) were observed in both groups. Both techniques yielded excellent radiological outcomes. N.s. differences in functional or radiological outcomes improvements between both procedures were found. However, the OW-HTO group presented a higher total cost than the CW-HTO group (4612.1 +/- 765.6euro vs. 1827.1 +/- 701.9euro; p < 0.001). The cost-effectiveness ratio was 818.1 +/- 46.8 euro/MCID for the CW-HTO procedure and 2414.3 +/- 115.2 euro/MCID for the OW-HTO procedure (p = 0.025). CONCLUSION: The CW-HTO procedure presented a cost-effectiveness ratio almost three times lower than the OW-HTO procedure. Both techniques allowed to achieve of good to excellent functional outcomes, significant pain reduction and high patient satisfaction while correcting the varus limb malalignment and the metaphyseal tibial varus in patients with medial compartment osteoarthritis. LEVEL OF EVIDENCE: Level III; economic study. CI - (c) 2024 European Society of Sports Traumatology, Knee Surgery and Arthroscopy. FAU - Ferrer-Rivero, Robert AU - Ferrer-Rivero R AUID- ORCID: 0000-0002-6653-5249 AD - Department of Orthopaedic Surgery, Bellvitge University Hospital, Barcelona University, Hospitalet de Llobregat, Barcelona, Spain. FAU - Pujol, Oriol AU - Pujol O AUID- ORCID: 0000-0003-4760-2730 AD - Department of Orthopaedic Surgery, Vall d'Hebron University Hospital, Universitat Autonoma de Barcelona, Barcelona, Spain. FAU - Ferrer-Rivero, Josep AU - Ferrer-Rivero J AUID- ORCID: 0009-0000-8643-8051 AD - Department of Orthopaedic Surgery, Germans Trias i Pujol University Hospital, Universitat Autonoma de Barcelona, Badalona, Spain. FAU - De Maria Prieto, Jose Manuel AU - De Maria Prieto JM AUID- ORCID: 0000-0002-1861-9245 AD - Department of Orthopaedic Surgery, Bellvitge University Hospital, Barcelona University, Hospitalet de Llobregat, Barcelona, Spain. FAU - Oliver, Gabriel AU - Oliver G AUID- ORCID: 0000-0002-0019-7144 AD - Department of Orthopaedic Surgery, Bellvitge University Hospital, Barcelona University, Hospitalet de Llobregat, Barcelona, Spain. LA - eng GR - None/ PT - Journal Article DEP - 20240103 PL - Germany TA - Knee Surg Sports Traumatol Arthrosc JT - Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA JID - 9314730 SB - IM MH - Humans MH - Cost-Benefit Analysis MH - *Cost-Effectiveness Analysis MH - Knee Joint/surgery MH - *Osteoarthritis, Knee/surgery MH - Tibia/surgery MH - Osteotomy/methods MH - Pain MH - Treatment Outcome OTO - NOTNLM OT - closing wedge high tibial osteotomy OT - cost-effectiveness OT - knee OT - opening wedge high tibial osteotomy OT - osteotomy OT - varus EDAT- 2024/01/16 13:42 MHDA- 2024/01/17 06:42 CRDT- 2024/01/16 08:32 PHST- 2023/11/11 00:00 [received] PHST- 2023/12/01 00:00 [accepted] PHST- 2024/01/17 06:42 [medline] PHST- 2024/01/16 13:42 [pubmed] PHST- 2024/01/16 08:32 [entrez] AID - 10.1002/ksa.12026 [doi] PST - ppublish SO - Knee Surg Sports Traumatol Arthrosc. 2024 Jan;32(1):95-102. doi: 10.1002/ksa.12026. Epub 2024 Jan 3.