Evidence map›Paper›PMID 27597807›Full record

ArticleApplied bionics and biomechanics2016

The Analysis of Biomechanical Properties of Proximal Femur after Implant Removal.

Jae Hyuk Yang, Tae Gon Jung, Arjun Rupanagudi Honnurappa, Jae Min Cha, Chang Hwa Ham, Tae Yoon Kim, Seung Woo Suh

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Applied bionics and biomechanics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.2field-weighted citation impact, top 13% of its field
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

12 citing papers in PubMed, 15 citations in OpenAlex.

  1. Re‑fracture risk following implant removal in consolidated hip fractures: a multicenter retrospective cohort study of 575 patients.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Jae Hyuk YangScoliosis Research Institute, Department of Orthopedics, Korea University Medical College, Guro Hospital, Guro 2-dong, Guro-gu, Seoul 152-703, Republic of Korea.
Tae Gon JungOsong Medical Innovation Foundation, Medical Device Development Center, Cheongju 363-951, Republic of Korea.
Arjun Rupanagudi HonnurappaScoliosis Research Institute, Department of Orthopedics, Korea University Medical College, Guro Hospital, Guro 2-dong, Guro-gu, Seoul 152-703, Republic of Korea.
Jae Min ChaThe Division of Biological Sciences at The University of Chicago, Undergraduate Class of 2014, 5801 South Ellis Avenue Chicago, IL 60637, USA.
Chang Hwa HamScoliosis Research Institute, Department of Orthopedics, Korea University Medical College, Guro Hospital, Guro 2-dong, Guro-gu, Seoul 152-703, Republic of Korea.
Tae Yoon KimJung-Hwa Girls High School, San 105 Beomeo-4-dong Sunsung-gu, Daegu 706-819, Republic of Korea.
Seung Woo SuhScoliosis Research Institute, Department of Orthopedics, Korea University Medical College, Guro Hospital, Guro 2-dong, Guro-gu, Seoul 152-703, Republic of Korea.ORCID 0000-0002-1536-4611
Korea University Medical Center · KROsong Medical Innovation Foundation · KRUniversity of Chicago · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction. To compare the biomechanical stability of the femur following the removal of proximal femoral nail antirotation (PFNA-II) and dynamic hip screw (DHS). Material and Methods. 56 paired cadaveric femurs were used as experimental and control groups. In the experimental group, PFNA-II and DHS were randomly inserted into femurs on both sides and then removed. Thereafter, compression load was applied until fracture occurred; biomechanical stability of the femurs and associated fracture patterns were studied. Results. The ultimate load and stiffness of the control group were 6227.8 ± 1694.1 N and 990.5 ± 99.8 N/mm, respectively. These were significantly higher than experimental group (p = 0.014, <0.001) following the removal of PFNA-II (4085.6 ± 1628.03 N and 656.3 ± 155.3 N/mm) and DHS (4001.9 ± 1588.3 N and 656.3 ± 155.3 N/mm). No statistical differences in these values were found between the 2 device groups (p = 0.84, 0.71), regardless of age groups. However, fracture patterns were different between two devices, intertrochanteric and subtrochanteric fractures. Conclusions. Mechanical stability of the proximal femurs does not differ after the removal of 2 different of fixation devices regardless of the age. However, it was significantly lower compared to an intact femur. Different fracture patterns have been shown following the removal of different fixation devices as there are variations in the site of stress risers for individual implants.

Identifiers

PMID27597807
PMCPMC4997010
OpenAlexW2510975999

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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.