Evidence map›Paper›PMID 31707985›Full record

Trial reportBMC musculoskeletal disorders2019

Are changes in radiological leg alignment and femoral parameters after total hip replacement responsible for joint loading during gait?

Stefan van Drongelen, Hanna Kaldowski, Timur Tarhan, Ayman Assi, Andrea Meurer, Felix Stief

Registry-linked trialOpen access · goldAbstract readClinical Trial, Phase IIIRandomized Controlled Trial
In one paragraph

Trial report in BMC musculoskeletal disorders, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06369948 (Quality Of Recovery After Pericapsular Nerve Group), which is not on this 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
1.8field-weighted citation impact, top 15% 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.

NCT06369948 nacompletednot on this mapstarted 2024, after this paper: background citation

Quality Of Recovery After Pericapsular Nerve Group (PENG) Block For Hip Hemiarthroplasty Under Spinal Anesthesia: A Prospective, Double-Blinded, Randomized Controlled Trial

TypeinterventionalSponsorFayoum University HospitalRan2024 to 2024Enrolled60ConditionsHip HemiarthroplastyArmsPericapsular Nerve Group (PENG) Block, elective hip hemiarthroplasty without receiving a PENG block., bupivacaine 0.5% injection
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 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

6 authors at 2 institutions in 2 countries.

Stefan van DrongelenOrthopaedic University Hospital Friedrichsheim gGmbH, Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Marienburgstr. 2, 60528, Frankfurt/Main, Germany. s.vandrongelen@friedrichsheim.de.ORCID http://orcid.org/0000-0001-5961-1015
Hanna KaldowskiOrthopaedic University Hospital Friedrichsheim gGmbH, Frankfurt/Main, Germany.
Timur TarhanOrthopaedic University Hospital Friedrichsheim gGmbH, Frankfurt/Main, Germany.
Ayman AssiLaboratory of Biomechanics and Medical Imaging, Faculty of Medicine, University of Saint-Joseph, Beirut, Lebanon.
Andrea MeurerOrthopaedic University Hospital Friedrichsheim gGmbH, Frankfurt/Main, Germany.
Felix StiefOrthopaedic University Hospital Friedrichsheim gGmbH, Frankfurt/Main, Germany.
Orthopaedic University Hospital Friedrichsheim · DESaint Joseph University · LB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGait kinematics after total hip replacement only partly explain the differences in the joint moments in the frontal plane between hip osteoarthritis patients after hip replacement and healthy controls. The goal of this study was to determine if total hip replacement surgery affects radiological leg alignment (Hip-Knee-Shaft-Angle, femoral offset, Neck-Shaft-Angle and varus/valgus alignment) and which of these parameters can explain the joint moments, additionally to the gait kinematics.

methods22 unilateral hip osteoarthritis patients who were scheduled for total hip replacement were included in the study. Preoperatively and 1 year postoperatively all patients had biplanar radiographic examinations and 3D gait analysis.

resultsThe operated leg showed significantly (P < 0.05) more varus (1.1°) as well as a larger femoral offset (+ 8 mm) and a larger Hip-Knee-Shaft-Angle (+ 1.3°) after total hip replacement; however no significant differences in the joint moments in the frontal plane compared to healthy controls were found. The hip moment (first half of stance) and the knee moments (first and second half of stance) were mostly determined by the varus/valgus alignment (29% and respectively 36% and 35%). The combination with a kinematic parameter (knee range of motion, foot progression angle) increased the predictive value for the knee moments.

conclusionIn our patient group the joint moments after total hip replacement did not differ from healthy controls, whereas radiological leg alignment parameters changed significantly after the total hip replacement. A combination of these radiological leg parameters, especially the varus alignment, and the deviating kinematics explain the joint moments in the frontal plane during gait after total hip replacement surgery. For surgeons it is important not to create too much of a structural varus alignment by implanting the new hip joint as varus alignment can increase the knee adduction moment and the risk for osteoarthritis of the medial knee compartment.

trial registrationThis study was retrospectively registered with DRKS (German Clinical Trials Register) under the number DRKS00015053. Registered 1st of August 2018.

Indexed as

AgedArthroplasty, Replacement, HipBone MalalignmentFemaleFemurGaitHip JointHumansKnee JointMaleMiddle AgedOsteoarthritis, HipPostoperative ComplicationsProspective StudiesRadiographyRange of Motion, ArticularGait analysisJoint loadingLeg alignmentTotal hip replacementUnilateral hip osteoarthritis

Identifiers

PMID31707985
PMCPMC6844039
OpenAlexW2986820961

What OpenQuestion holds

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LicenceCC BY
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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.