Is an operation device with a center of gravity measurement function (locobot) effective for improving motor function?

Is an operation device with a center of gravity measurement function (locobot) effective for improving motor function? -Focus on motor function after total hip arthroplasty and total knee arthroplasty- - Is an operation device with a center of gravity measurement function (locobot) effective for improving motor function?

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000039032

Enrollment

150

Registered

2019-12-30

Start date

2020-04-01

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

Hip osteoarthritis Knee osteoarthritis

Interventions

Intervention period: 2 days after surgery to 12 months after surgery Intervention frequency: once a day Intervention time: 10 minutes Intervention 1: THA, locobot/control Intervention 2: THA, locobot

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Those who are over 40 years old. Those who have undergone THA or TKA. Those who are deemed appropriate for this study.

Exclusion criteria

Exclusion criteria: Patients who have been instructed by the attending physician to limit lower limb loads after surgery. Those who have higher brain dysfunction or cognitive decline. Other subjects that the person in charge of implementation judged to be inappropriate as a research subject.

Design outcomes

Primary

Measure	Time frame
Before surgery, 14days after surgery, 6 weeks after surgery, 3 months after surgery, 6 months after surgery , 12 months after surgery 1. Temporal and spatial factors in gait: walking rate (cadence), stride time, step time, one-leg support time, two-legged support time, stride length, step length, and walking speed.	—

Secondary

Measure	Time frame
Before surgery, 14days after surgery, 6 weeks after surgery, 3 months after surgery, , 6 months after surgery , 12 months after surgery 2. Body center-of-gravity motion in gait: Vertical, lateral, and horizontal width 3. Lower limb loading rate in static standing posture Average load, average load percentage, average load change Maximum load, maximum load ratio, maximum load change 4. Body center of gravity sway in static upright posture: Total trajectory length, rectangular area, external area, mean center of sway displacement 5. Time Up & Go test 6. Functional Reach test 7. Berg Balance Scale 8. One leg stand test 9. Rise test in mobility, 2-step test, Locomo 25	—

Measure

Time frame

Before surgery, 14days after surgery, 6 weeks after surgery, 3 months after surgery, , 6 months after surgery , 12 months after surgery 2. Body center-of-gravity motion in gait: Vertical, lateral, and horizontal width 3. Lower limb loading rate in static standing posture Average load, average load percentage, average load change Maximum load, maximum load ratio, maximum load change 4. Body center of gravity sway in static upright posture: Total trajectory length, rectangular area, external area, mean center of sway displacement 5. Time Up & Go test 6. Functional Reach test 7. Berg Balance Scale 8. One leg stand test 9. Rise test in mobility, 2-step test, Locomo 25

—

Countries

Japan

Contacts

Public ContactShigeaki Miyazaki

University of Miyazaki Hospital, Miyazaki, Miyazaki, Japan Rehabilitation Unit

03-5-23@med.miyazaki-u.ac.jp0985-85-9849

Outcome results

None listed

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