Evidence map›Paper›PMID 40636707›Full record

ArticleArthroplasty today2025

The Femoral Neck-Bite Sign: A Radiographic Indicator of Catastrophic Sandwich Liner Failure in Total Hip Arthroplasty.

Hendrik Pott, Ricarda Stauss, Peter Savov, Max Ettinger, Ralf Dieckmann

Abstract readCase Reports
PubMed Full text at PMC Publisher
In one paragraph

Article in Arthroplasty today, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

5 authors.

Hendrik PottDivision of Orthopaedics at Campus Pius-Hospital, Carl von Ossietzky Universität Oldenburg, School of Medicine and Health Sciences, Oldenburg, Germany.
Ricarda StaussDivision of Orthopaedics at Campus Pius-Hospital, Carl von Ossietzky Universität Oldenburg, School of Medicine and Health Sciences, Oldenburg, Germany.
Peter SavovDivision of Orthopaedics at Campus Pius-Hospital, Carl von Ossietzky Universität Oldenburg, School of Medicine and Health Sciences, Oldenburg, Germany.
Max EttingerDivision of Orthopaedics at Campus Pius-Hospital, Carl von Ossietzky Universität Oldenburg, School of Medicine and Health Sciences, Oldenburg, Germany.
Ralf DieckmannDepartment of Orthopedic Surgery, Krankenhaus der Barmherzigen Brüder Trier, Trier, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this case report, we present the failure of a sandwich liner resulting in extensive notching of the femoral neck as well as metallosis and osteolysis in a 74-year-old woman. All implants were removed due to large bone defects and a cage was combined with a polyethylene cup, ceramic head, and modular cementless stem. Clinical and radiological follow-ups were conducted at 6 weeks and 6 months postoperatively, showing postoperative patient-reported outcome measures that were marginally inferior to the preoperative status. We discussed that a timely revision surgery was nonetheless warranted in order to prevent further bone loss and systemic toxic metallosis. We introduce the Femoral Neck-Bite Sign, a radiographic finding that may indicate ceramic liner fracture as in this case or implant impingement resulting in femoral notching.

Indexed as

Case reportCeramic liner fractureFemoral Neck-Bite SignSandwich type linerTotal hip arthroplasty revision

Identifiers

PMID40636707
PMCPMC12240126

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Registered trials

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