What is the clinical evidence from this study?

Study design: Cohort. Population: Lumbar spinal stenosis (n=122). Intervention: Preoperative functional mobility (Timed Up-and-Go test). Primary outcome: Exceeding the planned length of hospital stay (>14 days) (RR 1.10, 95% CI 1.06-1.14, p=<0.001).

What question did this study set out to answer?

The study aims to determine if preoperative functional mobility predicts exceeding the planned length of stay after lumbar fusion surgery for spinal stenosis.

April 10, 2026Open Access

Preoperative Functional Mobility as a Predictor of Exceeding the Planned Length of Hospital Stay after Lumbar Fusion Surgery for Spinal Stenosis

Q: What are the key findings of this study?

Poorer preoperative functional mobility, measured by the Timed Up-and-Go test, was significantly associated with an increased risk of exceeding the planned length of hospital stay after lumbar fusion surgery (RR 1.10 per 1-second increase).

Q: What question did this study set out to answer?

The study aims to determine if preoperative functional mobility predicts exceeding the planned length of stay after lumbar fusion surgery for spinal stenosis.

Key Result

Poorer preoperative functional mobility, measured by the Timed Up-and-Go test, was significantly associated with an increased risk of exceeding the planned length of hospital stay after lumbar fusion surgery (RR 1.10 per 1-second increase).

Key Points

The study aims to determine if preoperative functional mobility predicts exceeding the planned length of stay after lumbar fusion surgery for spinal stenosis.
Conducted an observational study on patients undergoing lumbar fusion surgery.
Assessed functional mobility using the TUG (Timed Up and Go) test preoperatively.
Analyzed the relationship between functional mobility and length of hospital stay.
Patients with poorer preoperative functional mobility had an increased likelihood of exceeding planned length of stay.
Routine TUG test identification of high-risk patients could improve outcomes.
Enhanced rehabilitation strategies post-surgery can potentially reduce prolonged hospitalization.

Study Design

Type

Cohort (n=122)

Multicenter

Structured PICO

Does preoperative functional mobility predict exceeding the planned length of hospital stay after lumbar fusion surgery for spinal stenosis?

Population

Patients undergoing lumbar fusion surgery for lumbar spinal stenosis (LSS)

Intervention

Preoperative functional mobility assessment using the Timed Up and Go (TUG) test

Outcome

Exceeding the planned length of hospital stay (LOS)

Routine preoperative assessment with the TUG test may help identify patients at high risk for prolonged hospitalization after lumbar fusion surgery.

Main Result

Effect estimate: RR 1.10 (95% CI 1.06-1.14)

p-value: p=<0.001

Limitations

Retrospective, single-center design may limit generalizability
Potential for unmeasured confounding factors, such as nutritional status or specific psychological conditions
The definition of planned LOS (14 days) was based on the institution's clinical pathway and may differ elsewhere, potentially affecting the applicability of the risk estimates

Abstract

Poorer preoperative functional mobility is an independent predictor of exceeding the planned LOS after lumbar fusion surgery for LSS. Routine preoperative assessment with the TUG test may help identify high-risk patients, and targeted strategies such as enhanced preoperative and postoperative rehabilitation could reduce the likelihood of prolonged hospitalization.

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Discussion

Authors

K Kiriyama

Juntendo University

Atsushi Endo

Kihoku hospital

Yoshito Kurashima

Kihoku hospital

Journals

Progress in Rehabilitation Medicine

Actions

Institutions

Juntendo University

Tokyo Metropolitan University

Kihoku hospital

References and Citations

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Discussion

Cite this study

Kiriyama et al. (Thu,) conducted a cohort in Lumbar spinal stenosis (n=122). Preoperative functional mobility (Timed Up-and-Go test) was evaluated on Exceeding the planned length of hospital stay (>14 days) (RR 1.10, 95% CI 1.06-1.14, p=<0.001). Poorer preoperative functional mobility, measured by the Timed Up-and-Go test, was significantly associated with an increased risk of exceeding the planned length of hospital stay after lumbar fusion surgery (RR 1.10 per 1-second increase).

synapsesocial.com/papers/69d892d16c1944d70ce03f93 — DOI: https://doi.org/10.2490/prm.20260016

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Preoperative Functional Mobility as a Predictor of Exceeding the Planned Length of Hospital Stay after Lumbar Fusion Surgery for Spinal Stenosis

Key Result

Key Points

Study Design

Structured PICO

Main Result

Limitations

Abstract

Citation Network

Connected Papers

Discussion

Authors

Journals

Actions

Institutions

References and Citations

Citation Network

Connected Papers

Discussion

Cite this study

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