Evidence map›Paper›PMID 30393498›Full record

ArticleArchives of medical science : AMS2018

Evaluation of implant fit and frontal plane alignment after bi-compartmental knee arthroplasty using patient-specific instruments and implants.

Joerg Arnholdt, Yama Kamawal, Boris Michael Holzapfel, Axel Ripp, Maximilian Rudert, Andre Friedrich Steinert

Open access · goldAbstract read
In one paragraph

Article in Archives of medical science : AMS, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Insufficient evidence to confirm benefits of custom partial knee arthroplasty: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Pooled it
  2. Article
  3. Article
  4. Review
  5. Relevant changes of leg alignment after customised individually made bicompartmental knee arthroplasty due to overstuffing.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Article
  6. Article
  7. Review
  8. Article
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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

6 authors at 2 institutions in 1 country.

Joerg ArnholdtDepartment of Orthopaedic Surgery, König-Ludwig-Haus, Julius-Maximilians-University, Würzburg, Germany.
Yama KamawalDepartment of Orthopaedic Surgery, König-Ludwig-Haus, Julius-Maximilians-University, Würzburg, Germany.
Boris Michael HolzapfelDepartment of Orthopaedic Surgery, König-Ludwig-Haus, Julius-Maximilians-University, Würzburg, Germany.
Axel RippDepartment of Trauma and Orthopaedic Surgery, Elblandkliniken, Radebeul, Germany.
Maximilian RudertDepartment of Orthopaedic Surgery, König-Ludwig-Haus, Julius-Maximilians-University, Würzburg, Germany.
Andre Friedrich SteinertDepartment of Orthopaedic Surgery, König-Ludwig-Haus, Julius-Maximilians-University, Würzburg, Germany.
Klinik König-Ludwig Haus · DEKrankenhaus Agatharied · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe goals of successful bi-compartmental knee arthroplasty are to achieve correct fit and positioning of the implant, while appropriately correcting the mechanical alignment of the leg after surgery. As these requirements are not always reliably fulfilled using off-the-shelf implant systems, newer approaches for bi-compartmental resurfacing have been explored. MATERIAL AND

methodsIn this article we report the radiographic results of 30 patients with anteromedial osteoarthritis (OA) who were treated with a novel patient-specific fixed-bearing bi-compartmental knee resurfacing system using custom-made implants and instruments. Utilizing standardized pre- and postoperative radiographic analyses (based on anterior-posterior and lateral, anterior-posterior weight-bearing full-length radiographs, patella skyline views and preoperative computed tomography (CT) scanning) implant fit and positioning as well as correction of the mechanical axis (hip-knee-ankle angle, HKA) were determined.

resultsOn average, HKA was corrected from 173.4 ±3.47° preoperatively to 179.4 ±2.85° postoperatively. The coronal femoro-tibial angle was corrected on average 5.61°. The preoperative tibial slope measured on lateral views was 6.38 ±2.4°, while the average slope in the CT-based planning protocol (iView) was 6.14 ±2.40°. Postoperative lateral tibial slope was determined to be 5.77 ±1.97°. The thickness of the posterior femoral cuts was measured intraoperatively and, in all cases, corresponded well to the targeted thickness of the cuts provided by the iView. The joint line was preserved in all cases and the average Insall-Salvati index was 1.078 ±0.11 pre- and 1.072 ±0.11 postoperatively. The fit of the implant components measured by over- or underhang was excellent throughout (< 1.01 mm).

conclusionsCustom-made bicompartmental knee arthroplasty can ensure optimized fitting and positioning of the implant with restoration of the leg axis. These implants could be considered as an alternative primary solution for knee surgeons treating bi-compartmental disease.

Indexed as

bi-compartmentalimplant positioningknee alignmentknee arthroplastyknee osteoarthritispatient-specific

Identifiers

PMID30393498
PMCPMC6209715
OpenAlexW2898210959

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

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.