ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020
Correction of excessive intraarticular varus deformities in total knee arthroplasty is associated with deteriorated postoperative ankle function.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
11 citing papers in PubMed, 19 citations in OpenAlex.
- Kinematic alignment, but not mechanical alignment, preserves the knee-ankle relationship after total knee arthroplasty: A retrospective radiographic analysis from the FP-UCBM Knee Study Group.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Coronal plane alignment of the knee phenotypes and ankle joint coronal plane alignment patterns in Egyptian population.World journal of orthopedics · 2026Article
- Assessment and quantification of ipsilateral and contralateral ankle joint alignment changes after unilateral total knee arthroplasty for knee osteoarthritis with varus deformity: a retrospective cohort study.Knee surgery & related research · 2025Article
- Does the coronal plane alignment of the ankle and subtalar joints normalize after total knee arthroplasty?Knee surgery & related research · 2025Article
- Ankle pain and orientation after high tibial osteotomy as a treatment of medial compartment knee osteoarthritis.SICOT-J · 2025Article
- Increasing grades of frontal deformities in knee osteoarthritis are not associated with ligamentous ankle instabilities.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Evaluation of the hindfoot alignment before and after total knee arthroplasty.Journal of clinical orthopaedics and trauma · 2022Article
- Osteotomies around the knee lead to corresponding frontal realignment of the ankle.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2022Article
- Frontal knee alignment influences the vertical orientation of the femoral neck in standing position.Bone & joint open · 2021Article
- Open-wedge high tibial osteotomy for the treatment of osteoarthritis of both knee and ankle in the same leg: A report of two cases.Clinical case reports · 2021Article
- Change in the weight-bearing line ratio of the ankle joint and ankle joint line orientation after knee arthroplasty and high tibial osteotomy in patients with genu varum deformity.International orthopaedics · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe aim of this study was to demonstrate, whether the degree of limb alignment correction in varus knee osteoarthritis correlated with an increase in ankle symptoms and to define a cut-off value concerning the degree of correction above which to expect ankle problems.
methodsNinety-nine consecutive patients with preoperative intraarticular varus knee deformities who underwent total knee arthroplasty were retrospectively analyzed. Patients were examined clinically (Knee Society Score, Forgotten Joint Score, Foot Function Index, Range of Motion of the knee and ankle joint, pain scales) as well as radiologically. The mean follow-up time was 57 months.
resultsThe degree of operative limb alignment correction strongly correlated with the Foot Function Index (R = 0.91, p < 0.05). Given this, higher degrees of knee malalignment corrections were associated with worse postoperative outcomes in the knee and ankle joint-despite postoperative improved joint line orientations. Subsequently, a cut-off value for arthritic varus deformities (14.5°) could be calculated, above which the prevalence of ankle symptoms increased manifold [OR = 15.6 (3.2-77.2 95% CI p < 0.05)]. Furthermore, ROM restrictions in the subtalar joint were associated with a worse outcome in the ankle joint.
conclusionsWhen correcting excessive intraarticular varus knee osteoarthritis, surgeons have to be aware of possible postoperative ankle symptoms and should consider ankle deformities or decreased subtalar ROM before operative procedures. LEVEL OF EVIDENCE: III.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.