Prior High Tibial Osteotomy Does Not Affect the Survival of Total Knee Arthroplasties: Results From the Danish Knee Arthroplasty Registry.

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Abstract

[Indexed for MEDLINE] 11. Int Orthop. 2020 Oct;44(10):2021-2026. doi: 10.1007/s00264-020-04614-w. Epub 2020 May 30. Medial opening wedge high tibial osteotomy: more than ten years of experience with Puddu plate technique supports its indication. Orrego M(1), Besa P(1), Orrego F(2), Amenabar D(3), Vega R(1), Irribarra L(1), Espinosa J(1), Vial R(1), Phillips V(2), Irarrázaval S(4). Author information: (1)Department of Orthopedic Surgery, Pontificia Universidad Católica de Chile, Santiago, Chile. (2)School of Medicine, Universidad de Los Andes, Santiago, Chile. (3)Departament of Orthopedic Surgery, School of Medicine, Universidad de los Andes, Santiago, Chile. (4)Department of Orthopedic Surgery, Pontificia Universidad Católica de Chile, Santiago, Chile. sirarraz@med.puc.cl. PURPOSE: To describe the short-term and long-term results of patients who underwent a medial opening wedge high tibial osteotomy (MOW-HTO) for unicompartmental medial knee joint osteoarthritis. METHODS: A retrospective review was conducted of patients with MOW-HTO using a Puddu plate®, with more than ten year follow-up. The degree of correction, initial chondral damage, number of meniscal lesions, preoperative and 1-year postoperative functional scale scores (IKDC and Lysholm), and arthroplasty conversion rates at the ten year follow-up were registered. We assumed early indication when patients underwent the operation before they were 40 years old and delayed ≥ 40. Functional outcomes were analyzed by adjusting for pre-operative values. Fisher's exact test was used to study the association between the arthroplasty conversion rates and the timing of indication. RESULTS: Fifty-five patients were included, 37 of whom were male (67%). Twenty-nine patients had early indications for surgery (53%). All patients completed ten year follow-up. All patients improved IKDC (p