Evidence map›Paper›PMID 33423988›Full record

ArticleActa orthopaedica et traumatologica turcica2020

Spinopelvic alignment does not change after bilateral total hip arthroplasty in patients with bilateral Crowe type-IV developmental dysplasia of the hip.

Ata Can, Fahri Erdoğan, Necip Selçuk Yontar, Ayşe Övül Erdoğan, Mehmet Nuri Erdem, İlker Abdullah Sarıkaya

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Acta orthopaedica et traumatologica turcica, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06176612 (In Patients With Crowe Type III and Crowe Type IV Hip Dysplasia, Mid-Term Lower Extremities and Spine After Total Hip Arthroplasty Natural Course), which is not on this map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 29% 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.

NCT06176612 nacompletednot on this mapstarted 2021, after this paper: background citation

In Patients With Crowe Type III and Crowe Type IV Hip Dysplasia, Mid-Term Lower Extremities and Spine After Total Hip Arthroplasty Natural Course

TypeinterventionalSponsorBezmialem Vakif UniversityRan2021 to 2024Enrolled33ConditionsTotal Hip ArthroplastyArmstotal hip arthroplasty
3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Impact of total hip arthroplasty on low back pain; a 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 · 2026
    Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. [A study of low back pain and changes in spinal sagittal parameters after total hip arthroplasty in patients with unilateral Crowe typeZhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2021
    Article
  8. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Ata CanDepartment of Hip-Knee Surgery, Nişantaşı Orthopaedic Center, İstanbul, Turkey.
Fahri ErdoğanDepartment of Hip-Knee Surgery, Nişantaşı Orthopaedic Center, İstanbul, Turkey.
Necip Selçuk YontarDepartment of Hip-Knee Surgery, Nişantaşı Orthopaedic Center, İstanbul, Turkey.
Ayşe Övül ErdoğanDepartment of Hip-Knee Surgery, Nişantaşı Orthopaedic Center, İstanbul, Turkey.
Mehmet Nuri ErdemDepartment of Hip-Knee Surgery, Nişantaşı Orthopaedic Center, İstanbul, Turkey.
İlker Abdullah SarıkayaDepartment of Hip-Knee Surgery, Nişantaşı Orthopaedic Center, İstanbul, Turkey.
İstanbul Nişantaşı Üniversitesi · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis prospective study aimed to evaluate the changes in the sagittal alignment after total hip arthroplasty (THA) in patients with hip osteoarthritis (OA) secondary to Crowe type-IV developmental dysplasia of the hip (DDH) and whether THA would contribute to the relief of low-back pain (LBP).

methodsA total of 27 patients (2 men and 25 women) with bilateral hip OA secondary to Crowe type-IV DDH were enrolled in this study. Their mean age at the time of surgery was 40,36±12,35. All patients underwent simultaneous, bilateral THA between January 2015 and December 2016. Clinical assessment included Oswestry disability index (ODI) score and Harris hip score (HHS), and pelvic incidence (PI), sacral slope (SS), lumbar lordosis (LL), and pelvic tilt (PT) were measured from radiographs.

resultsPreoperatively, all the patients had hip and low-back pain. Preoperative and final follow-up ODI scores were 48.3 and 3.9 (p=0.000), respectively. HHS changed from 43.54 to 92.68 (p=0.000). PT and PI significantly changed from -20.4°±20.4° to 3.2°±16.7° (p=0.001) and from 26.6°±35.1° to 47.4°±17.9° (p=0.001), respectively. There were no significant differences regarding the SS and LL measurements. Age or limb-length discrepancy was not significantly associated with the spinopelvic alignment measurements.

conclusionRestoring the function of the hip with THA is shown to improve hip-associated LBP, but the accompanying hyperlordosis does not change. THA in patients with bilateral Crowe type-IV hips relieves hip pain as well as associated LBP. Hyperlordosis of the lumbar vertebra does not change after surgery, but PI and PT changes are observed; this improvement might have a role in the relief of LBP. LEVEL OF EVIDENCE: Level IV, Therapeutic study.

Indexed as

Arthroplasty, Replacement, HipLordosisLow Back PainAdultDevelopmental Dysplasia of the HipDisability EvaluationFemaleHumansLumbar VertebraeMalePostureProspective StudiesRadiographyRecovery of FunctionRetrospective StudiesSacrum

Identifiers

PMID33423988
PMCPMC7815221
OpenAlexW3116603198

What OpenQuestion holds

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Registered trials

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.