Evidence map›Paper›PMID 26590564›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2016

Effects of total knee arthroplasty on ankle alignment in patients with varus gonarthrosis: Do we sacrifice ankle to the knee?

Sarper Gursu, Hakan Sofu, Peter Verdonk, Vedat Sahin

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Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Insufficiency Fracture of the Neck of the Talus After Total Knee Arthroplasty.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026
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  13. The impact of different alignment strategies on bone cuts in total knee arthroplasty for varus knee phenotypes.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023
    Article
  14. 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 · 2023
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  15. Article
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  17. Correction of severe valgus osteoarthritis by total knee arthroplasty is associated with increased postoperative ankle symptoms.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Sarper GursuBaltalimanı Bone and Joint Diseases Education and Research Hospital, Rumelihisari caddesi No: 62, Sariyer, 34470, Istanbul, Turkey. sarper154@yahoo.com.
Hakan SofuErzincan University Faculty of Medicine, Erzincan, Turkey.
Peter VerdonkAntwerp Orthopedic Center, Monica Hospitals, Antwerp, Belgium.
Vedat SahinErzincan University Faculty of Medicine, Erzincan, Turkey.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTotal knee arthroplasty is one of the most commonly preferred surgical methods in the treatment of patients with varus gonarthrosis. In this study, we aimed to evaluate the radiological changes observed in the ankles after total knee arthroplasty.

methodsBetween May 2012 and June 2013, 80 knees of 78 patients with varus deformity over 10° underwent total knee arthroplasty. For each patient, full-leg standing radiographs were obtained pre- and post-operatively. Mechanical and anatomical axes (HKA and AA), lateral distal femoral angle, medial proximal tibial angle, lateral distal tibial angle (LDTA), ankle joint line orientation angle (AJOA), tibial plafond talus angle (PTA) and talar shift were measured for each patient both pre- and post-operatively.

resultsPre-operatively, the mean HKA was 16.6° and the mean AA was 10.41°, both in favour of varus alignment. Post-operatively, the mean HKA decreased to 3.6° and the mean AA to -2.1. The mean LDTA was 87.3°. Before the operation, the mean AJOA was -7.6°, opening to the medial aspect of the ankle, and it was 0.04° after the operation and opening to the lateral aspect (p < 0.05).

conclusionOur study reveals the changes occurring in the ankle after acute correction of long-standing varus deformity of the knee using total knee arthroplasty. In cases undergoing knee arthroplasty, effect of the acute change in the alignment of the knee on the ankle should be taken into consideration and the amount of correction should be calculated carefully in order not to damage the alignment of the ankle. LEVEL OF EVIDENCE: IV.

Indexed as

Bone MalalignmentAgedAnkle JointArthroplasty, Replacement, KneeFemaleFemurHumansKnee JointMaleMiddle AgedOsteoarthritis, KneePostoperative PeriodRadiographyTalusTibiaAlignmentAnkleArthroplastyKneeVarus gonarthrosis

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Registered trials

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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.