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

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

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT1060260019

Enrollment

Registered

2026-05-14

Start date

2026-01-23

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

lumbar fusion surgery lumbar fusion surgery, osteoporosis, low bone mass

Interventions

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 ho

Exercise Therapy

Back muscle exercises Walking exercises

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 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

Exclusion criteria

Exclusion criteria: 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

Design outcomes

Primary

Measure	Time frame
Incidence of mechanical complications within 1 year after surgery	—

Secondary

Measure	Time frame
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	—

Measure

Time frame

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

—

Contacts

Public ContactKitsuda Yuki

Tottori University Hospital

y-kitsuda@tottori-u.ac.jp+81-859386862

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026