Evidence map›Paper›PMID 32055971›Full record

ArticleInternational orthopaedics2020

Accuracy of three dimensional-planned patient-specific instrumentation in femoral and tibial rotational osteotomy for patellofemoral instability.

Lukas Jud, Lazaros Vlachopoulos, Silvan Beeler, Timo Tondelli, Philipp Fürnstahl, Sandro F Fucentese

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In one paragraph

Article in International orthopaedics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
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

31 citing papers in PubMed, 45 citations in OpenAlex.

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  2. Electromagnetic navigation for femoral osteotomy using high-accuracy X-ray-to-CT registration.International journal of computer assisted radiology and surgery · 2026
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  7. Surgical management of miserable malalignment of the lower limb: a systematic review.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Review
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  13. Navigation surgery in musculoskeletal disorders.BMC musculoskeletal disorders · 2024
    Article
  14. Article
  15. Review
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  17. Review
  18. Article
  19. Article
  20. Increased femoral curvature and trochlea flexion in high-grade patellofemoral dysplastic knees.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023
    Article
4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Lukas JudBalgrist University Hospital, Department of Orthopedics, University of Zurich, Forchstrasse 340, 8008, Zürich, Switzerland. lukas.jud@balgrist.ch.ORCID 0000-0001-8128-3927
Lazaros VlachopoulosBalgrist University Hospital, Department of Orthopedics, University of Zurich, Forchstrasse 340, 8008, Zürich, Switzerland.
Silvan BeelerBalgrist University Hospital, Department of Orthopedics, University of Zurich, Forchstrasse 340, 8008, Zürich, Switzerland.
Timo TondelliBalgrist University Hospital, Department of Orthopedics, University of Zurich, Forchstrasse 340, 8008, Zürich, Switzerland.
Philipp FürnstahlResearch in Orthopedic Computer Science (ROCS), University Hospital Balgrist, University of Zurich, Zurich, Switzerland.
Sandro F FucenteseBalgrist University Hospital, Department of Orthopedics, University of Zurich, Forchstrasse 340, 8008, Zürich, Switzerland.
University of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePatellofemoral instability can be caused by tibial or femoral torsional deformity. Established surgical treatment options are rotational osteotomies, but the transfer from pre-operative planning to surgical execution can be challenging. Patient-specific instruments (PSI) are proofed to be helpful tools in realignment surgery. However, accuracy of PSI in femoral and tibial rotational osteotomies remains still unknown. Goal of the present study was to evaluate the accuracy of PSI in femoral and tibial rotational osteotomies in a patient population suffering from patellofemoral instability.

methodsAll patients that underwent femoral or tibial rotational osteotomy using PSI in case of patellofemoral instability from October 2015 until April 2019 in our clinic were included. Twelve knees with twelve supracondylar femoral and seven supratuberositary tibial rotational osteotomies could be included. Accuracy of the correction was assessed using pre- and post-operative CT scans based on conventional measurements and, in 3D, based on 3D bone models of the respective patients.

resultsCT measurements revealed an absolute difference between planned and achieved rotation of 4.8° ± 3.1° for femoral and 7.9° ± 3.7° for tibial rotational osteotomies without significant difference (p = 0.069). Regarding 3D assessment, a significant difference could be observed for the residual error between femoral and tibial rotational osteotomies in the 3D angle (p = 0.014) with a higher accuracy for the femoral side.

conclusionThe application of PSI for femoral and tibial rotational osteotomy is a safe surgical treatment option. Accuracy for femoral rotational osteotomies is higher compared with tibial rotational osteotomies using PSI.

Indexed as

OsteotomyTibiaFemurHumansKneeTomography, X-Ray ComputedFemoral osteotomyKnee osteotomyRotational osteotomyTibial osteotomyTorsional deformityTorsional malalignment syndrome

Identifiers

PMID32055971
OpenAlexW3005709478

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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.