Evidence map›Paper›PMID 39579207›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2024

Does contemporary total knee designs replicate the anatomy of the native trochlea?

Nikhil Gattu, David B Doherty, Hongjia He, David Rodriguez-Quintana, Sabir K Ismaily, Nicholas D Lanfermeijer, Camryn A Pletka, Shuyang Han

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Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. Article
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

8 authors.

Nikhil GattuMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA.
David B DohertyMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA.
Hongjia HeMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA.
David Rodriguez-QuintanaMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA.
Sabir K IsmailyMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA.
Nicholas D LanfermeijerMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA.
Camryn A PletkaMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA.
Shuyang HanMcGovern Medical School, University of Texas Health Science Center at Houston, 5420 West Loop S. Suite 1300, Bellaire, TX, 77401, USA. Shuyang.han@uth.tmc.edu.ORCID http://orcid.org/0000-0003-1311-0658

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeRegistry data shows that less surgeons are resurfacing the patella during total knee arthroplasty (TKA). This tendency highlights the importance of matching trochlear and native patellar anatomy. Currently, there is a lack of consensus on implant design that best accommodates native patellae. The objective of this study was to compare the trochlear morphology of a large selection of contemporary TKA designs with the native trochlear anatomy.

methodsThree-dimensional models of 13 femoral component designs from seven manufacturers and 37 healthy human femora (average age: 31.2 ± 13.4 years) were reconstructed. The trochlear morphology, including trochlear length, sulcus angle, trochlear groove angle, and height and width of the medial and lateral facets, was measured along the trochlea at 15° increments.

resultsThe prosthetic trochlea was shorter and shallower compared to the native trochlea (p < 0.01). The native trochlea was bilinear and had a medial orientation proximally, whereas all asymmetrical TKA designs had a laterally oriented trochlea, resulting in opposite trochlear groove orientation (TKA, 5.8 ± 3.7°; native -3.1 ± 4.1°, p < 0.001). In addition, a strong correlation (R

conclusionThis study highlights that the lateral trochlear orientation in existing TKA models is not anatomical. Given the rising trend in patellar non-resurfacing during TKA, further studies are necessary to improve trochlear design that better accommodates the native patellar morphology.

Indexed as

Arthroplasty, Replacement, KneeFemurKnee ProsthesisPatellaProsthesis DesignAdultFemaleHumansImaging, Three-DimensionalKnee JointMaleModels, AnatomicPatellar trackingPatellofemoral jointTotal knee arthroplastyTrochlear morphologyTrochlear orientation

Identifiers

PMID39579207

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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.