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Knee Surgery, Sports Traumatology, Arthroscopy
Published in: Knee Surgery, Sports Traumatology, Arthroscopy 8/2023

10-12-2022 | Osteoarthrosis | Knee

Double level osteotomy for medial osteoarthritis and bifocal varus malalignment has excellent short-term results while maintaining physiologic radiographic joint parameters

Authors: Philipp Schuster, Frida Rathgeb, Philipp Mayer, Stefan Michalski, Lotta Hielscher, Julia Buchholz, Lara Krüger, Jörg Richter

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 8/2023

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Abstract

Purpose

The purpose of this study was to prospectively evaluate the clinical and radiological results of double level osteotomy (distal femoral lateral closed wedge and proximal tibial medial open wedge) in medial osteoarthritis and varus malalignment due to bifocal deformity of femur and tibia.

Methods

From 2017 to 2019 all cases of DLO in osteoarthritic varus malaligned knees with bifocal deformity (femoral and tibial deformity) were prospectively enrolled into this observational therapeutic study. Evaluation was performed preoperatively, at six, twelve, 18 and 24 months with regard to survival (not requiring arthroplasty), functional outcome [subjective International Knee Documentation Committee score (IKDC), Oxford Knee Score (OKS), Knee Injury and Osteoarthritis Outcome score (KOOS) and Tegner Activity Scale], pain level (numeric rating scale), subjective satisfaction (rating 1–5), radiographic parameters on a pre-and postoperative full leg x-rays (mechanical axis, mechanical proximal tibial and distal femoral angles) and complications. For statistical evaluation student’s t test, Mann–Whitney U test and Wilcoxon-signed-rank test were used.

Results

Fifty-two consecutive cases in 48 patients were enrolled in the study. Three cases were excluded, resulting in a follow-up rate of 94%. No arthroplasties were performed within follow-up. All functional outcome scores substantially and significantly increased as early as six months after the index procedure and further increased until final follow-up (p < 0.001). Pain level significantly decreased (p < 0.001). At final follow-up all patients stated that they would retrospectively undergo the operation again, and rated the result with 4.5 ± 0.6 out of 5 (3–5). Radiographic parameters were within physiological limits postoperatively. No severe complications occurred.

Conclusions

Double level osteotomy has excellent short-term results while maintaining physiological radiographic parameters. Therefore, it should be an integral part and standard procedure in realignment surgery for monocompartimental osteoarthritis.

Level of evidence

IV (prospective observational therapeutic study).
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Metadata
Title
Double level osteotomy for medial osteoarthritis and bifocal varus malalignment has excellent short-term results while maintaining physiologic radiographic joint parameters
Authors
Philipp Schuster
Frida Rathgeb
Philipp Mayer
Stefan Michalski
Lotta Hielscher
Julia Buchholz
Lara Krüger
Jörg Richter
Publication date
10-12-2022
Publisher
Springer Berlin Heidelberg
Published in
Knee Surgery, Sports Traumatology, Arthroscopy / Issue 8/2023
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI
https://doi.org/10.1007/s00167-022-07247-1

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