臨床研究等提出・公開システム

A study on the preventive effect of perioperative back muscle exercise instruction on mechanical complications in patients with osteoporosis or osteopenia undergoing lumbar fusion surgery

Study on Back Muscle Exercise Instruction for Patients with Osteoporosis or Low Bone Mass Undergoing Lumbar Fusion Surgery

Yuki Kitsuda

Tottori University Hospital

36-1 Nishi-cho, Yonago, Tottori 683-8504 Japan

y-kitsuda@tottori-u.ac.jp

Yuki Kitsuda

Tottori University Hospital

36-1 Nishi-cho, Yonago, Tottori 683-8504 Japan

+81-859386862

y-kitsuda@tottori-u.ac.jp

Recruiting

Jan. 23, 2026

Interventional

single arm study

open(masking not used)

historical control

single assignment

prevention purpose

1) Patients scheduled to undergo lumbar fusion surgery
2) Patients whose primary disease is vertebral fracture, lumbar spinal stenosis, degenerative lumbar spondylolisthesis, or adult spinal deformity
3) Patients diagnosed with low bone mass or osteoporosis before surgery
4) Patients with a Goutallier grade of 1 or higher for the multifidus muscle on preoperative magnetic resonance imaging
5) Male and female patients aged 40 years or older at the time of consent
6) Patients scheduled for outpatient follow-up at our hospital

1)Patients for whom postoperative imaging assessment is difficult
2)Patients for whom motor function assessment is difficult
3)Patients who refused rehabilitation at the time of surgical explanation
4)Patients diagnosed with dementia
5)Patients with a history of psychiatric disorder
6)Patients who are not independently ambulatory
7)Patients judged by the principal investigator to be unsuitable for participation in this study

Both

lumbar fusion surgery

Before surgery, patients will receive instructions for home-based exercises combining back muscle exercises and lower limb exercises using an exercise instruction pamphlet.
During the postoperative hospital stay, individualized postoperative exercise instruction will be provided in addition to rehabilitation delivered as usual care, including lower limb muscle stretching, gait training, and stair-climbing practice.
After discharge, exercise instruction will focus mainly on back muscle exercises and walking exercises.

lumbar fusion surgery, osteoporosis, low bone mass

Back muscle exercises Walking exercises

Spinal Fusion

Exercise Therapy

Incidence of mechanical complications within 1 year after surgery

Time to mechanical complication onset
Change in erector spinae cross-sectional area
Change in intramuscular fat area of the erector spinae
Change in maximal trunk extensor strength
Changes in multifidus muscle activity during movement and range of motion of the spine and lower limb joints
Change in Oswestry Disability Index (ODI)
Change in Japanese Orthopaedic Association (JOA) score
Change in Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) score
Incidence of falls
Change in low back pain Numerical Rating Scale (NRS) score
Change in leg pain Numerical Rating Scale (NRS) score
Change in numbness Numerical Rating Scale (NRS) score

+81-859-38-7021

Nov. 18, 2025

No

none