Evidence map›Paper›PMID 35859214›Full record

Observational studyInternational orthopaedics2022

Restoring femoral medial offset could reduce pelvic obliquity following primary total hip arthroplasty, an observational study.

Alireza Moharrami, Seyed Peyman Mirghaderi, Nima Hoseini-Zare, Mohammad Hasan Kaseb, Seyed Mir Mansour Moazen-Jamshidi, Ahmed Kareem Mansour, Seyed Mohammad Javad Mortazavi

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in International orthopaedics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Observational
  6. Characteristics of pelvic obliquity in dysplastic hip osteoarthritis.Archives of orthopaedic and trauma surgery · 2024
    Article
  7. Risk factors for residual pelvic obliquity one year after total hip arthroplasty.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. 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

7 authors at 2 institutions in 1 country.

Alireza Moharrami *Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0002-8457-8197
Seyed Peyman Mirghaderi *Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0002-3522-8772
Nima Hoseini-ZareJoint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0002-1612-6877
Mohammad Hasan KasebKnee Surgery Fellowship, Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Seyed Mir Mansour Moazen-JamshidiFellowship of Hip and Pelvic Surgery, Zanjan University of Medical Science, Zanjan, Iran.
Ahmed Kareem MansourJoint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Seyed Mohammad Javad MortazaviJoint Reconstruction Research Center, End of Keshavarz Blvd, Imam Khomeini Hospital, Tehran University of Medical Science, Keshavarz Blvd, Tehran, Iran. smjmort@yahoo.com.ORCID http://orcid.org/0000-0003-4189-7777
Tehran University of Medical Sciences · IRUniversity of Tehran · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSince femoral and horizontal offsets may be contributing factors to hip and pelvic balance, this study seeks to determine whether there is a correlation between pelvic obliquity (PO) after unilateral total hip arthroplasty (THA) and horizontal/vertical offset differences of the replaced and contralateral natural joints.

methodsA cross-sectional study was performed on adult patients who underwent unilateral THA between 2017 and 2020. An expert orthopaedic resident measured PO angles and offset parameters. "Delta medial offset" is considered medial offset of the replaced hip minus the medial offset of the contralateral side. "Absolute delta medial offset" is considered the absolute value of the "Delta medial offset."

resultsFinally, 133 patients were included in the study with a mean (SD) age of 45.3 ± 14.8 years and 57.9% female. The PO values (median, IQR) changed from 3.2 (1.7-5.7) before THA to 3.0 (1.50-5.6) after THA, not significantly decreased (P = 0.31). The PO after THA is significantly correlated with PO before THA (correlation coefficient of 0.457, P < 0.001), the delta medial offset after THA (correlation coefficient of - 0.24, P = 0.006), and the absolute delta medial offset after THA (correlation coefficient of 0.284, P = 0.001). The amount of changes of delta medial offset, before and after surgery, was not significantly correlated to PO or PO changes after surgery.

conclusionPO before the THA and medial offset discrepancy after THA are two important contributing factors for post-operative PO. Restoring the medial offset of the affected side and lowering the delta medial offset between the two sides can significantly decrease post-operative PO.

Indexed as

Arthroplasty, Replacement, HipBone DiseasesHip ProsthesisAdultCross-Sectional StudiesFemaleFemurHip JointHumansLower ExtremityMaleMiddle AgedPelvisArthroplastyHip jointHip prosthesisObliquityOffsetPelvic bonesPelvis

Identifiers

PMID35859214
OpenAlexW4285992796

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.