Evidence map›Paper›PMID 42022165›Full record

ArticleFrontiers in bioengineering and biotechnology2026

Characterization of the acetabular labrum articular surface and its translation into biomimetic graft design.

Matthias X T Santschi, Stephanie Huber, Lukas Bienz, Simon Künzli, Casimir Schwank, Jess G Snedeker, Michael Leunig, Stephen J Ferguson

Abstract read
In one paragraph

Article in Frontiers in bioengineering and biotechnology, 2026. 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

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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.

Matthias X T SantschiETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
Stephanie HuberETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
Lukas BienzETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
Simon KünzliETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
Casimir SchwankETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
Jess G SnedekerETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
Michael LeunigDepartment of Hip and Knee Surgery, Schulthess Clinic, Zurich, Switzerland.
Stephen J FergusonETH Zurich, Institute for Biomechanics, Zurich, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The acetabular labrum contributes to hip joint stability and lubrication, yet its articular surface properties remain poorly characterized. Understanding and replicating these surface features is critical for developing functional labral grafts. Methods: Native bovine labra were analyzed to assess surface microstructure, lubricin distribution, local stiffness, and coefficient of friction (COF). Scanning electron microscopy, immunohistochemistry, micromechanical indentation, and pin-on-disc testing were employed, with cartilage and meniscus samples as controls. In parallel, hybrid scaffolds combining melt electrowriting (MEW) microgrids with electrospun (SES) nanofibre caps were fabricated. These constructs were structurally and mechanically evaluated by SEM, T-peel adhesion tests, tensile testing, and pin-on-disc friction measurements for comparison. Results: The bovine labrum exhibited a dense nanofibrillar surface (∼70 nm fibres), abundant lubricin, and a low COF (0.15 ± 0.03), significantly lower than cartilage or meniscus. Trypsin digestion depleted lubricin, increasing COF and reducing local stiffness. Biomimetic MEW-SES constructs demonstrated successful nanofibre capping (∼0.83 µm fibres) over MEW grids (∼16.5 µm fibres). Adhesion between layers was moderate (3-4 mN/mm) and independent of MEW spacing. Nanofibre capping enhanced tensile modulus in dense MEW grids from 2.292 to 3.261 MPa and significantly reduced COF from 0.203 to 0.117, values within the physiological range of native tissue. Conclusion: The acetabular labrum possesses unique tribological properties that can serve as a blueprint for graft design. Hybrid MEW-SES constructs replicate key structural and functional features, providing a promising approach toward engineered labral grafts. Future work should integrate biological evaluation and long-term tribological testing under physiologic conditions.

Indexed as

electrospinninglabrummelt electrowriting (MEW)tissue engineeringtribology

Identifiers

PMID42022165
PMCPMC13096045

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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.