Evidence map›Paper›PMID 23179124›Full record

ArticleClinical orthopaedics and related research2013

Are the left and right proximal femurs symmetric?

Ernest Y Young, Jeremy Gebhart, Daniel Cooperman, Nicholas U Ahn

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Article in Clinical orthopaedics and related research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

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30citing papers in PubMed
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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

Who cites it

30 citing papers in PubMed.

  1. Article
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  6. Patients with bilateral patellar instability have multiple and symmetric risk factors in each knee.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023
    Article
  7. Article
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  10. Lower leg symmetry: a Q3D-CT analysis.Surgical and radiologic anatomy : SRA · 2022
    Article
  11. Article
  12. Bony asymmetry in patellofemoral morphology and risk factors of instability are mostly clinically negligible.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021
    Article
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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Ernest Y YoungDepartment of Orthopaedics, Case Western Reserve University School of Medicine and University Hospitals Case Medical Center, 11100 Euclid Ave., Cleveland, OH 44106, USA. ernest.young.81@gmail.com
Jeremy Gebhart
Daniel Cooperman
Nicholas U Ahn

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe contralateral femur frequently is used for preoperative templating for THA or hemiarthroplasty when the proximal femur is deformed by degenerative changes or fracture. Although femoral symmetry is assumed in these situations, it is unclear to what degree the contralateral femur is symmetrical. QUESTIONS/PURPOSE: We therefore defined the degree of asymmetry between left and right proximal femurs and determined whether it was affected by demographics and proximal femoral anatomy.

methodsWe obtained 160 paired femurs from individuals (20-40 years old), evenly distributed for gender and ethnicity (African-American and Caucasian). The height and weight of the individuals were recorded. We measured the femoral head diameter, minimal femoral neck diameter in the AP and cephalocaudal (CC) planes, and the AP femoral diaphyseal diameter. The absolute and percent differences were determined.

resultsAll femoral measurements showed an absolute difference less than 2 mm and a percent asymmetry and difference less than 2% for the femoral head, less than 4% for the femoral neck, and less than 3.5% for the femoral shaft. We found no correlation or predictive value between absolute differences and asymmetry and age, ethnicity, gender, or weight. Height was negatively associated with femoral head differences and thus increased symmetry of the femoral head.

conclusionsOur data support assumptions of substantial symmetry of the proximal femur and highlights that asymmetry is not affected by demographics or the size of the proximal femur. Asymmetry tends not to occur in isolated segments of the femur.

Indexed as

AdultBlack or African AmericanBody HeightBody WeightCadaverFemaleFemurFemur HeadFemur NeckHumansLinear ModelsMaleRadiographyWhite PeopleYoung Adult

Identifiers

PMID23179124
PMCPMC3613562

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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.