Evidence map›Paper›PMID 37428271›Full record

ArticleArchives of orthopaedic and trauma surgery2023

Comparison of canal fill and radiolucent line formation between two fully coated, hydroxyapatite tapered stems: a 2-year follow-up after total hip arthroplasty.

Ittai Shichman, Kyle W Lawrence, Emily Berzolla, Carlos Sandoval Hernandez, Rani Man-El, Yaniv Warschawski, Nimrod Snir, Ran Schwarzkopf, Matthew S Hepinstall

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Archives of orthopaedic and trauma surgery, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. 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

9 authors.

Ittai ShichmanDepartment of Orthopedic Surgery, Orthopedic Hospital, NYU Langone Health, 301 East 17Th Street, 14Th Floor Suite 1402, New York, NY, 10003, USA. ittai.shichman@nyulangone.org.ORCID http://orcid.org/0000-0003-1478-8671
Kyle W LawrenceDepartment of Orthopedic Surgery, Orthopedic Hospital, NYU Langone Health, 301 East 17Th Street, 14Th Floor Suite 1402, New York, NY, 10003, USA.
Emily BerzollaDepartment of Orthopedic Surgery, Orthopedic Hospital, NYU Langone Health, 301 East 17Th Street, 14Th Floor Suite 1402, New York, NY, 10003, USA.
Carlos Sandoval HernandezDepartment of Orthopedic Surgery, Orthopedic Hospital, NYU Langone Health, 301 East 17Th Street, 14Th Floor Suite 1402, New York, NY, 10003, USA.
Rani Man-ElDivision of Orthopedic Surgery, Sourasky Medical Center, Sackler School of Medicine, Tel- Aviv, Israel.
Yaniv WarschawskiDivision of Orthopedic Surgery, Sourasky Medical Center, Sackler School of Medicine, Tel- Aviv, Israel.
Nimrod SnirDivision of Orthopedic Surgery, Sourasky Medical Center, Sackler School of Medicine, Tel- Aviv, Israel.
Ran SchwarzkopfDepartment of Orthopedic Surgery, Orthopedic Hospital, NYU Langone Health, 301 East 17Th Street, 14Th Floor Suite 1402, New York, NY, 10003, USA.
Matthew S HepinstallDepartment of Orthopedic Surgery, Orthopedic Hospital, NYU Langone Health, 301 East 17Th Street, 14Th Floor Suite 1402, New York, NY, 10003, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionComparison between fully hydroxyapatite (HA)-coated stems with differing geometry are lacking in the total hip arthroplasty (THA) literature. This study aimed to compare femoral canal fill, radiolucency formation, and 2-year implant survivorship between two commonly used, HA-coated stems.

methodsAll primary THAs performed with two fully HA-coated stems (Polar stem, Smith&Nephew, Memphis, TN and Corail stem, DePuy-Synthes, Warsaw, IN) with a minimum 2-year radiographic follow-up were identified. Radiographic measures of proximal femoral morphology based on the Dorr classification and femoral canal fill were analyzed. Radiolucent lines were identified by Gruen zone. Perioperative characteristics and 2-year survivorship were compared between stem types.

resultsA total of 233 patients were identified with 132 (56.7%) receiving the Polar stem (P) and 101 (43.3%) receiving the Corail stem (C). No differences were observed with respect to proximal femoral morphology. Femoral stem canal fill at the middle third of the stem was greater for P stem patients than for C stem patients (P stem; 0.80 ± 0.08 vs. C stem; 0.77 ± 0.08, p = 0.002), while femoral stem canal fill at the distal third of the stem and presence of subsidence were comparable between groups. A total of six and nine radiolucencies were observed in P stem and C stem patients, respectively. Revision rate at 2-year (P stem; 1.5% vs C stem; 0.0%, p = 0.51) and latest follow-up (P stem; 1.5% vs C stem; 1.0%, p = 0.72) did not differ between groups.

conclusionGreater canal fill at the middle third of the stem was observed for the P stem compared to the C stem, however, both stems demonstrated robust and comparable freedom from revision at 2-year and latest follow-up, with low incidences of radiolucent line formation. Mid-term clinical and radiographic outcomes for these commonly used, fully HA-coated stems remain equally promising in THA despite variations in canal fill.

Indexed as

Arthroplasty, Replacement, HipCoated Materials, BiocompatibleDurapatiteHip ProsthesisAdultAgedFemaleFemurFollow-Up StudiesHumansMaleMiddle AgedProsthesis DesignProsthesis FailureRadiographyRetrospective StudiesCoated Materials, BiocompatibleDurapatiteCanal fillCementlessFemur morphologyHydroxyapatiteRadiolucencyStem

Identifiers

PMID37428271

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Registered trials

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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.