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A Novel Walking Cane With Haptic Biofeedback Reduces Degenerative Loading in the Arthritic Knee

NCT03900052 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 21

Last updated 2019-04-04

No results posted yet for this study

Summary

The most commonly prescribed mobility aid, the walking cane, is often underloaded and therefore fails to reduce knee joint loading and provide symptomatic relief for those with knee osteoarthritis. For this study, a novel walking cane with haptic biofeedback was designed to improve cane loading. The purpose of this study was twofold; 1) to determine the effectiveness of a novel walking haptic biofeedback cane to encourage proper cane loading compared with a conventional cane, and 2) to determine whether scale training or haptic feedback influences short term retention of cane loading. It is hypothesized that haptic biofeedback would increase cane loading (H1) and decrease knee loading (peak knee adduction moment (H2) and knee adduction angular impulse (H3)) when compared to naïve cane use.

Conditions

Interventions

DEVICE

Haptic cane

• A haptic biofeedback cane was designed and manufactured to measure the user applied axial cane load, compare the load to the targeted 20% BW threshold, and then deliver a vibrotactile feedback in the cane handle when the loading was greater than threshold. The cane data acquisition was temporally synchronized to the motion analysis system and recorded axial cane loads at 100 Hz for later analysis. The haptic biofeedback cane consisted of a conventional bariatric walking cane (Patterson Medical Ltd) with a loadcell (Digi-Key100 LBS. Load Cell) placed inside a 3D printed modular cane foot. A microcontroller (Sparkfun™ Pro Micro), SD disk storage (Sparkfun™ OpenLog), eccentric rotating mass vibration motor (model 306-109, Precision Microdrives Limited), USB communications port, and battery completed the system.

DEVICE

typical cane

Typical training cane loading training

Sponsors & Collaborators

  • VA Puget Sound Health Care System

    lead FED

Study Design

Allocation
RANDOMIZED
Purpose
DEVICE_FEASIBILITY
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
35 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2015-06-25
Primary Completion
2017-07-10
Completion
2017-07-10

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03900052 on ClinicalTrials.gov