Evidence map›Paper›PMID 40936855›Full record

ArticleJournal of orthopaedic case reports2025

Failure of the Femoral Neck System in a Young Patient: A Case Report.

Jude A Alawa, Christopher R Leland, Matthew A Pappas, Elyse J Berlinberg, John B Michaud, John J Wixted

Abstract readCase Reports
In one paragraph

Article in Journal of orthopaedic case reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

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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

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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

6 authors.

Jude A AlawaDepartment of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY.
Christopher R LelandHarvard Combined Orthopaedic Residency Program, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States.
Matthew A PappasHarvard Combined Orthopaedic Residency Program, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States.
Elyse J BerlinbergHarvard Combined Orthopaedic Residency Program, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States.
John B MichaudDepartment of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA.
John J WixtedDepartment of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Femoral neck fractures in young adults are rare but carry a high risk of complications, including non-union and implant failure. The femoral neck system™ (FNS) is a newer fixation device designed to enhance mechanical stability while minimizing surgical morbidity. Limited reports exist on its failure modes. The purpose of this case report is to describe a unique failure of the FNS and the challenges encountered during revision surgery. Case Report: A 21-year-old female sustained a basicervical femoral neck fracture and underwent fixation with the FNS and an additional headless screw at an outside institution. Seven months post-operatively, she developed progressive, atraumatic hip pain and was unable to bear weight. Imaging revealed non-union and implant failure at the aperture where the bolt and antirotation screw exit the plate barrel. Revision surgery included intertrochanteric valgus osteotomy and blade plate fixation. Removal of the broken FNS components was technically demanding and required trephination, leading to further compromise of the femoral head and neck bone stock. Conclusion: This case highlights a rare failure mode of the FNS involving simultaneous failure of the bolt and antirotation screw at the barrel aperture. Surgeons should be aware of this potential complication and the technical challenges it may pose during implant removal and revision surgery. These considerations may influence implant selection and pre-operative planning, particularly in young patients at risk for non-union.

Indexed as

femoral neck fractureFemoral neck systemhip fractureimplant complicationsimplant failureorthopedic trauma

Identifiers

PMID40936855
PMCPMC12422654

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