Evidence map›Paper›PMID 40493109›Full record

ArticleJournal of clinical monitoring and computing2025

Comparison of quadricep motor evoked potentials between different surgical positions during total hip arthroplasty.

Wataru Shirahata, Ryohei Takada, Naoto Watanabe, Kazumasa Miyatake, Ayami Sato, Kanako Minegishi, Toshitaka Yoshii, Hideyuki Koga

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of clinical monitoring and computing, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. 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

8 authors.

Wataru ShirahataDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Ryohei TakadaDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan. takada.orth@tmd.ac.jp.
Naoto WatanabeDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Kazumasa MiyatakeDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Ayami SatoDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Kanako MinegishiDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Toshitaka YoshiiDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Hideyuki KogaDepartment of Joint Surgery and Sports Medicine, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The influence of intraoperative position on femoral nerve palsy after total hip arthroplasty (THA) remains unclear. Therefore, we evaluated the effect of intraoperative position on quadricep motor-evoked potential monitoring in patients undergoing THA using an anterolateral approach. We included patients who underwent primary THA using the anterolateral approach at our hospital between June 2021 and January 2024 with available data on intraoperative quadricep using transcranial electrical stimulation motor-evoked potential. Patient characteristics were compared between the supine and lateral position groups. Intraoperative quadricep MEP were evaluated at the beginning of surgery, after anterior acetabular retractor placement, after acetabular retractor placement, and before wound closure. The MEP amplitude at surgery start was set to 100%, and the change in amplitude at each time point was compared between positions. Ten patients were placed in the supine and lateral positions. Patient background did not differ significantly between the groups, and no postoperative paralysis was observed. The residual rates of quadriceps MEP were significantly lower in the supine position than the lateral position at all three time points (p < 0.05). Intraoperative quadricep motor-evoked potential monitoring in primary THA using the anterolateral approach showed significantly lower MEP amplitude in the supine position than in the lateral position at all three time points. Therefore, the lateral position may decrease femoral nerve palsy risk after THA.

Indexed as

Arthroplasty, Replacement, HipEvoked Potentials, MotorMonitoring, IntraoperativePatient PositioningAgedFemaleFemoral NerveHumansIntraoperative Neurophysiological MonitoringMaleMiddle AgedPostoperative ComplicationsQuadriceps MuscleSupine PositionTranscranial Direct Current StimulationAnterolateral approachFemoral nerve palsyIntraoperative positionTotal hip arthroplastyTranscranial electrical stimulation motor-evoked potential

Identifiers

PMID40493109
PMCPMC12474580

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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.