Evidence map›Paper›PMID 42427199›Full record

ReviewGlobal spine journal2026

Surgical Outcomes of Degenerative Cervical Myelopathy in Patients with Parkinson Disease: A Systematic Review.

Shota Takenaka, Hiroyuki Ishiguro, Toshitaka Yoshii, Kentaro Yamada, Eiji Takasawa, Satoshi Nori, So Kato, Kazuya Kitamura, Takeo Furuya, Hiroaki Nakashima and 6 more

Abstract readReview
In one paragraph

Review in Global spine journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

16 authors.

Shota TakenakaDepartment of Orthopaedic Surgery, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan.ORCID 0000-0001-9956-5914
Hiroyuki IshiguroDepartment of Orthopaedic Surgery, National Hospital Organization Osaka Medical Center, Osaka, Japan.ORCID 0000-0001-7834-1727
Toshitaka YoshiiGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.ORCID 0000-0003-3511-9020
Kentaro YamadaGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Eiji TakasawaGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Satoshi NoriGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
So KatoGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Kazuya KitamuraGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.ORCID 0000-0003-0117-4152
Takeo FuruyaGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.ORCID 0000-0002-5378-940X
Hiroaki NakashimaGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Norimitsu WakaoGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Kazuyoshi NakanishiGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Yasushi FujiwaraGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Masahiro YoshidaGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Masahiko WatanabeGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.
Hirotaka ChikudaGuideline Committee of Cervical Spondylotic Myelopathy, The Japanese Orthopaedic Association, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Study DesignSystematic review.ObjectivesTo synthesize outcomes, complications, and healthcare utilization after surgery for degenerative cervical myelopathy (DCM) in patients with Parkinson disease (PD).MethodsPubMed/MEDLINE, EMBASE, and the Cochrane Library were searched from inception to March 2026. Eligible studies evaluated adults with PD undergoing cervical decompression with or without fusion for DCM; studies not specifically defining myelopathy but reporting cervical outcomes within broader PD spine cohorts were retained as indirect supportive evidence. Two reviewers independently screened studies, extracted data, and appraised quality using standard checklists. Because of marked heterogeneity, findings were synthesized narratively, with greater weight given to myelopathy-defined cohorts.ResultsEleven studies were included: 5 myelopathy-defined cohorts and 6 supportive studies. In myelopathy-defined cohorts, PD patients improved after surgery, but some studies showed smaller gains in modified Japanese Orthopaedic Association (mJOA) or Nurick scores, lower odds of clinically important mJOA improvement, and less EQ-5D improvement compared with non-PD controls. Database studies showed higher complication rates, longer hospital stays, non-home discharge, and a dysphagia/aspiration signal. Supportive studies suggested similar increases in hospitalization and medical complications and raised concern for long-term mechanical failure or reoperation.ConclusionsThe most direct evidence suggests that patients with PD undergoing surgery for cervical myelopathy may improve neurologically, although functional recovery may be smaller or less clinically meaningful in some cohorts. Perioperative risk and healthcare utilization also appear higher. Indirect supportive evidence further suggests that dysphagia or aspiration-related events and long-term mechanical failure or reoperation are important concerns in this population.

Indexed as

cervical spine surgerycervical spondylotic myelopathycomplicationsdegenerative cervical myelopathydysphagiaParkinson diseaserevision surgery

Identifiers

PMID42427199
PMCPMC13354598

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.