Evidence map›Paper›PMID 41925971›Full record

ArticleJournal of robotic surgery2026

Allowable robot-related material cost as a contribution margin threshold for financial sustainability of robot-assisted urologic surgery.

Atsunari Kawashima, Takuji Hayashi, Masataka Kawamura, Yoshiyuki Yamamoto, Yu Ishizuya, Norichika Ueda, Shigeaki Nakazawa, Kentaro Takezawa, Taigo Kato, Koji Hatano and 2 more

Abstract read
In one paragraph

Article in Journal of robotic surgery, 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

12 authors.

Atsunari KawashimaDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan. kawashima@uro.med.osaka-u.ac.jp.ORCID http://orcid.org/0000-0001-9369-4264
Takuji HayashiDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Masataka KawamuraDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Yoshiyuki YamamotoDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Yu IshizuyaDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Norichika UedaDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Shigeaki NakazawaDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Kentaro TakezawaDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Taigo KatoDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Koji HatanoDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Yoichi KakutaDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.
Norio NonomuraDepartment of Urology, Graduate School of Medicine, The University of Osaka, 2-2 Yamadaoka, Suita City, Osaka, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Robot-assisted surgery offers well-recognized clinical advantages; however, its financial sustainability at the institutional level varies substantially across procedures and healthcare systems. We evaluated the institutional financial implications of robot-assisted urological surgery using an allowable cost framework designed to clarify how robot-related expenditures restrict practical robotic resource utilization. The allowable robot-related material cost (ARMC) was defined as the maximum robot-related variable material cost at which robot-assisted surgery achieves contribution margin equivalence with conventional laparoscopic surgery under existing reimbursement conditions. ARMC was calculated for representative urological procedures, including adrenalectomy, radical nephrectomy, nephroureterectomy, and radical cystectomy. For adrenalectomy, ARMC adjusted for operative time was additionally calculated to assess time-based economic efficiency and the impact of operative duration on contribution margin. ARMC values were 24,903 yen for adrenalectomy, 46,472 yen for radical nephrectomy, − 7,139 yen for nephroureterectomy, and 92,591 yen for radical cystectomy. The negative ARMC for nephroureterectomy indicates that contribution margin equivalence was not observed under current reimbursement and cost structures. In adrenalectomy, ARMC increased to 70,415 yen after adjustment for operative time, suggesting improved procedural efficiency and highlighting the economic importance of operative duration. Based on this allowable threshold, routine use of a three-arm configuration, including one camera arm, was necessary to maintain contribution margin equivalence. The financial impact of robot-assisted urological surgery is highly procedure dependent. The ARMC framework quantitatively defines procedure-specific tolerance for robot-related variable costs and clarifies practical constraints on robotic resource allocation, providing a pragmatic institutional framework for maintaining financial sustainability while preserving clinical benefit.

Indexed as

Costs and Cost AnalysisRobotic Surgical ProceduresUrologic Surgical ProceduresAdrenalectomyCystectomyHumansNephrectomyNephroureterectomyOperative TimeFinancial sustainabilityHealth economicsReimbursementRobot-assisted surgeryUrologic surgery

Identifiers

PMID41925971
PMCPMC13046622

What OpenQuestion holds

Textmetadata
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.