Evidence map›Paper›PMID 27896394›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2018

The orientation of the surgical epicondylar axis varies in varus and non-varus knees in the coronal plane.

Yunjie Zhang, Xiaofeng Wang, Yunchao Shao, Qing Xia

Abstract read
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In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 25% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Highly variable coronal tibial and femoral alignment in osteoarthritic knees: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019
    Pooled it
  2. Article
  3. Article
  4. Coronal shaft bowing of the femur affects varus inclination of the surgical transepicondylar axis in varus knee osteoarthritis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021
    Article
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

4 authors at 1 institution in 1 country.

Yunjie ZhangDepartment of Orthopedic, Zhongshan Hospital, Fudan University, No. 180, Rd. Fenglin, Shanghai, China.
Xiaofeng WangDepartment of Orthopedic, Zhongshan Hospital, Fudan University, No. 180, Rd. Fenglin, Shanghai, China.
Yunchao ShaoDepartment of Orthopedic, Zhongshan Hospital, Fudan University, No. 180, Rd. Fenglin, Shanghai, China. sycjoint70@163.com.
Qing XiaDepartment of Orthopedic, Zhongshan Hospital, Fudan University, No. 180, Rd. Fenglin, Shanghai, China. qing_xia1964@163.com.ORCID http://orcid.org/0000-0003-4505-8823
Fudan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the orientations of the surgical epicondylar axis (SEA) of varus and non-varus knees in the coronal plane.

methodsOne-hundred and sixty-two knees from 81 Chinese patients undergoing total knee arthroplasty (TKA) were retrospectively investigated. The angle between the medial side of the femoral mechanical axis and the SEA (MA-SEA), as well as the physiological valgus angle, was measured in the coronal plane using three-dimensional reconstruction. The joint line angle (JLA) and hip-knee-ankle angle (HKAA) were measured in long-leg weight-bearing radiographs. The mean of each parameter was compared between the varus (HKAA < 177.0°) and the non-varus knees (HKAA ≥ 177.0°) using an independent t test. Linear regression was used to assess the correlation between MA-SEA with JLA and HKAA.

resultsA total of 42 non-varus knees (6 valgus and 36 neutral knees) and 98 varus knees were measured, as 22 knees were abandoned due to unrecognizable bony landmarks. The mean MA-SEA and JLA were significantly larger in non-varus knees (both, p < 0.01). The mean physiological valgus angle was 5.9 ± 1.0° for Chinese TKA patients and was significantly larger in varus knees (p < 0.01). There was a strong positive correlation between the MA-SEA and JLA (R

conclusionsThere were significant differences in the orientation of the SEA between varus and non-varus knees, which was strongly correlated with the orientation of the femoral joint line. These findings will enhance the current knowledge of knee anatomy and should prove useful for coronal alignment in TKA. LEVEL OF EVIDENCE: III.

Indexed as

AgedAged, 80 and overAnatomic LandmarksAnkle JointArthroplasty, Replacement, KneeAsian PeopleCoxa VaraFemaleFemurHipHumansKneeKnee JointMaleMiddle AgedOsteoarthritis, KneeFemoral varus angleHip-knee-ankle angleKinematical alignmentSurgical epicondylar axisTotal knee arthroplasty

Identifiers

PMID27896394
OpenAlexW2558016851

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.