Evidence map›Paper›PMID 26883265›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2016

The effect of total hip arthroplasty on sagittal spinal-pelvic-leg alignment and low back pain in patients with severe hip osteoarthritis.

Wenjie Weng, Hao Wu, Mingda Wu, Yawen Zhu, Yong Qiu, Weijun Wang

Abstract read
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In one paragraph

Article in 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, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
7.5field-weighted citation impact, top 2% 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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 101 citations in OpenAlex.

  1. Impact of prior spinal fusion surgery on complications and functional outcomes following total hip arthroplasty: an updated systematic review and meta-analysis.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 · 2024
    Pooled it
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  4. Complication Rates of Hip-Spine Syndrome Patients With Total Hip Arthroplasty and Lumbar Spine Surgery.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026
    Article
  5. Radiographic assessment of lumbar spine degeneration in patients with total hip arthroplasty: a cross-sectional study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026
    Article
  6. Changes in spinopelvic alignment and patient-reported outcomes after total hip arthroplasty in osteonecrosis of the femoral head.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
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  14. Clinical significance of relative pelvic version measurement as a predictor of low back pain after total hip arthroplasty.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 · 2023
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Wenjie WengDepartment of Joint Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
Hao WuDepartment of Joint Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
Mingda WuDepartment of Joint Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
Yawen ZhuNanjing University Medical School, Nanjing, China.
Yong QiuDepartment of Spine Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
Weijun WangDepartment of Joint Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China. drwilliamwang@163.com.
Nanjing Drum Tower Hospital · CNNanjing University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSagittal spinopelvic malalignment has been reported in spinal disorders such as low back pain (LBP), and restoration of normal alignment is targeted when treating these disorders. Abnormal sagittal spinal-pelvic-leg alignment has been reported in patients with severe hip osteoarthritis (OA), who have a high prevalence of associated LBP. This prospective longitudinal study aimed to investigate changes in sagittal spinal-pelvic-leg alignment after total hip arthroplasty (THA) in patients with severe hip OA, and whether these changes contribute to LBP relief.

methodsPatients undergoing primary THA due to severe unilateral hip OA were recruited. Physical examination and X-ray films were taken to rule out any spinal disorder. Sagittal alignment of pelvis, hip, and spine was analyzed on lateral radiographs taken before (baseline) and 1 year after (follow-up) THA. Functional instruments were completed by patients including: visual analog scale (VAS) for LBP, Roland-Morris Disability Questionnaire (RMDQ), and Harris Hip Score (HHS). Comparisons were carried out at baseline and follow-up, and between patients with and without LBP.

resultsThe recruited 69 patients showed significantly reduced hip flexion and improved global spinal balance at follow-up compared with baseline. LBP was reported by 39 patients (56.5 %) before surgery; at follow-up, 17 reported complete resolution, while 22 reported significant relief. Significant decreases in VAS and RMDQ scores in lumbar spine and increase in hip HHS were observed.

conclusionsTHA in patients with severe hip OA could help correct abnormal sagittal spinal-pelvic-leg alignment and relieve comorbid LBP. Improvements in hip flexion and global spinal balance might be involved in the mechanism of LBP relief.

Indexed as

Low Back PainOsteoarthritis, HipAgedArthroplasty, Replacement, HipFemaleHumansLongitudinal StudiesLower ExtremityMaleMiddle AgedPelvisProspective StudiesSpineHip flexionLow back painOsteoarthritisSagittal alignmentTotal hip arthroplasty

Identifiers

PMID26883265
OpenAlexW2283536729

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.