Evidence map›Paper›PMID 32711501›Full record

ArticleBMC musculoskeletal disorders2020

The lateral center-edge angle as radiographic selection criteria for periacetabular osteotomy for developmental dysplasia of the hip in patients aged above 13 years.

Daguang Zhang, Xin Pan, Hong Zhang, Dianzhong Luo, Hui Cheng, Kai Xiao

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

17 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. The influence of adolescent idiopathic scoliosis on hip joint development: a two-year longitudinal evaluation of the hip center-edge angle.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. 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

6 authors at 3 institutions in 1 country.

Daguang ZhangDepartment of Orthopedics, the First Hospital of Jilin University, No.71, Xinmin Street, Changchun, 130021, China. daguangzhangmd@outlook.com.
Xin PanDepartment of Ophthalmology, the Second Hospital of Jilin University, Changchun, 130041, China.
Hong ZhangDepartment of Orthopedics, the 4th medical Center of PLA General Hospital, Beijing, 100048, China.
Dianzhong LuoDepartment of Orthopedics, the 4th medical Center of PLA General Hospital, Beijing, 100048, China.
Hui ChengDepartment of Orthopedics, the 4th medical Center of PLA General Hospital, Beijing, 100048, China.
Kai XiaoDepartment of Orthopedics, the 4th medical Center of PLA General Hospital, Beijing, 100048, China.
Chinese PLA General Hospital · CNFirst Hospital of Jilin University · CNSecond Affiliated Hospital of Jilin University · CN

Funding

Education Department of Jilin Province Grant no. 2016480 and 2016273Science and Technology Department of Jilin Provincial 20190201064JC
6 · The paper itself

Abstract

backgroundThis retrospective study sought to delineate the radiographic characteristics of DDH patients over 13 years of age and investigate whether the lateral center-edge angle (LCEA) could serve as radiographic selection criteria for periacetabular osteotomy.

methodsWe enrolled patients with Hartofilakidis type I DDH without dislocation who underwent periacetabular osteotomy between August 2009 and August 2012. LCEA, anterior central edge angle (ACEA), femoral neck-shaft angle (FNSA), Shenton line and Tönnis acetabular index (AI) were evaluated by anteroposterior and 65° false⁃profile pelvic X-ray radiographs in the standing position. Femoral neck anteversion angle (FNA), labral lesion, labral inversion and cartilage lesion were evaluated by direct magnetic resonance arthrography. DDH was categorized by LCEA into four grades (grade I: 10° ≤ LCEA< 20°, grade II: 0° ≤ LCEA< 10°, grade III: -10° ≤ LCEA< 0°, grade IV: LCEA<-10) and osteoarthritis (OA) severity was assessed using Tönnis OA classification. Pearson correlation analysis was done between LCEA and other variables.

resultsTotally patients (274 hips) with a mean age of 27.3 years (range 13-47 years) were included. The mean LCEA was 3.5° (range: - 30° to 20°). Based on LCEA grades, grade I DDH was present in 104 hips, grade II in 40 hips, grade III in 76 hips, and grade IV in 54 hips. Based on Tönnis OA classification, 54.5% hips (150/274) were grade 0, 33.1% hips (91/274) grade 1, 8.4% hips (23/274) grade 2 and 4% hips (11/274) grade 3. Pearson correlation analysis showed a negative correlation between LCEA grade and Tönnis OA grades (r = 0.3987; P < 0.001). Cochran-Armitage trend test further showed a positive correlation between LCEA grades and labral lesion (P < 0.001) and interrupted Shenton line (P < 0.001).

conclusionThe LCEA classification scheme offers a simple and practical approach to categorize the level of acetabulum coverage on the femoral head, hip deformity and characteristics of DDH. Our findings could provide clinically useful guidance for orthopedic surgeons in preparation for periacetabular osteotomy in DDH patients aged above 13 years.

Indexed as

Developmental Dysplasia of the HipHip Dislocation, CongenitalAcetabulumAdolescentAdultAgedHip JointHumansMiddle AgedOsteotomyPatient SelectionRetrospective StudiesTreatment OutcomeYoung AdultDevelopmental dysplasia of the hipLateral center-edge anglePeriacetabular osteotomyRadiographyTönnis OA classification

Identifiers

PMID32711501
PMCPMC7382803
OpenAlexW3043999450

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.