Evidence map›Paper›PMID 31148364›Full record

ArticleOrthopaedic surgery2019

Influence of Spinopelvic Alignment on Pelvic Tilt after Total Hip Arthroplasty.

Makoto Kanto, Keishi Maruo, Toshiya Tachibana, Shigeo Fukunishi, Shoji Nishio, Yu Takeda, Fumihiro Arizumi, Kazuki Kusuyama, Kazuya Kishima, Shinichi Yoshiya

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In one paragraph

Article in Orthopaedic surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

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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

10 authors at 2 institutions in 1 country.

Makoto KantoDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Keishi MaruoDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.ORCID https://orcid.org/0000-0002-3905-196X
Toshiya TachibanaDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Shigeo FukunishiDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Shoji NishioDepartment of Orthopaedic Surgery, Takarazuka City Hospital, Japan.
Yu TakedaDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Fumihiro ArizumiDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Kazuki KusuyamaDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Kazuya KishimaDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Shinichi YoshiyaDepartment of Orthopaedic Surgery, Hyogo College of Medicine, Nishinomiya, Japan.
Hyogo Medical University · JPTakarazuka City Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the impact of spinopelvic parameters and hip contracture on change in the pelvic tilt (PT) after Total hip arthroplasty (THA).

methodsOne hundred patients (15 male and 85 female) who underwent THA were included in this prospective study. Radiographic data were obtained preoperatively and 1 year after THA. Radiographic parameters included sagittal anterior pelvic plane (APP), sagittal vertical axis (SVA), sacral slope (SS), pelvic inclination (PI), and lumbar lordosis angle (LL). The APP was defined as the angle between the anterior pelvic plane and the vertical plane. A positive value indicates pelvic retroversion. Postoperative changes in PT were divided into three groups: the PA group (pelvic anteversion, ΔAPP < -5°), the PR group (pelvic retroversion, ΔAPP > 5°), and the PT group (minimal change, ΔAPP ≤ ± 5°). The Kruskal-Wallis test and the Steel-Dwass test were used to compare the preoperative and postoperative spinopelvic parameters among the three groups. The Spearman's rank correlation coefficient was used to evaluate the correlation between ΔAPP and spinopelvic parameters.

resultsMinimal change in pelvic tilt was observed in 59% of patients, while pelvic anteversion was observed in 16% of patients and pelvic retroversion was observed in 25% of patients. There were no significant changes in the spinopelvic parameters, including TK, LL, SVA, LL, SS, and APP after THA. The Femoral angle (FA) was significantly decreased after THA (P < 0.001). Preoperative APP was significantly more retroverted in the PA group than the PR group, and the PT group (6.8 ± 12.2, 0.2 ± 9.9, -8.3 ± 8.3, P < 0.001). Preoperative SS, PI-LL, and PI were significantly smaller in the PA group than the PT group and the PR group. A significant negative correlation was identified between preoperative APP and ΔAPP (r = -0.418, P < 0.001).

conclusionApproximately 60% of the patients did not have any marked change in PT after THA. Preoperative APP was the only predictive factor associated with marked anterior or posterior change in PT.

Indexed as

Arthroplasty, Replacement, HipAdultAgedBone MalalignmentFemaleFollow-Up StudiesHumansLordosisLumbar VertebraeMaleMiddle AgedOutcome Assessment, Health CarePelvisPostoperative ComplicationsProspective StudiesRadiographyAnterior pelvic planeChange in pelvic tiltHip-spine syndrome; Total hip arthroplasty

Identifiers

PMID31148364
PMCPMC6595105
OpenAlexW2947910275

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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.