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RecruitingNCT05415878Updated Aug 19, 2026

Impact of Removable Cast Walker Design on Usability for Patients With Diabetic Foot Ulcers

An interventional study of RCW design form in Diabetes Mellitus and Foot Ulcer, sponsored by Rosalind Franklin University of Medicine and Science. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-19.

Sponsored by Rosalind Franklin University of Medicine and Science · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Aug 2023; still recruiting 3 years 3 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Within their lifetime, over 30% of people living with diabetes will develop a diabetic foot ulcer (DFU), many of which will never heal and may require amputation. Removable cast walkers (RCWs) are commonly prescribed to offload (treat) DFUs. While RCWs are prescribed to be worn during all weight bearing activities, adherence to this prescription is low. This is a serious concern given that low adherence predicts poor DFU healing. This study will provide pilot/feasibility data to inform a larger clinical trial to evaluate the impact of existing RCW designs on adherence and DFU healing. We will also quantify the effect of RCW form on biomechanical and self-reported measures related to usability. Our working hypothesis is that healing outcomes with a given RCW will be predicted by biomechanical and self-reported measures of RCW usability, with the predictive relationship partly explained by the effect of these measures on adherence.

02

Conditions studied

  • Diabetes Mellitus
  • Foot Ulcer
03

In context

Diabetes Mellitus

8,290 studies on the registry are indexed under Diabetes Mellitus; 1,077 are open to participants now.

This study's planned enrollment of 40 is below the median of 80 across 6,023 interventional studies indexed under Diabetes Mellitus.

Browse Diabetes Mellitus studies →

Lead sponsor

Rosalind Franklin University of Medicine and Science is the lead sponsor of 12 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • presence of a full thickness plantar (forefoot) diabetic foot ulcer ≥1cm2 that is being treated on an outpatient basis with a University of Texas wound classification of 1A-C or 2 A-C;
  • self-reported ability to walk for at least two continuous minutes at a self-selected speed
  • confirmation of the presence of diabetic peripheral neuropathy as identified by failure to detect a 10 gram Semmes Weinstein Monofilament on either foot at one of four sites tested (1st, 3rd, 5th metatarsal heads, and plantar surface of hallux) OR a vibration perception threshold value of 25 or more at either hallux.

Exclusion criteria

Exclusion Criteria:

  • lower extremity amputation more proximal than transmetatarsal on either limb
  • chronic kidney disease stage 4 or higher (i.e., currently undergoing dialysis or \<30 within last 60 days)
  • active Charcot neuroarthropathy
  • severe peripheral arterial disease (non-palpable pulse at posterior tibia and dorsalis pedis arteries, and an ankle brachial index\<0.7)
  • gait/balance disturbance not attributable to diabetes (e.g. neuromuscular disease or cerebrovascular vascular accident)
  • current or previous (within past year) use of an ankle-high RCW or of a contralateral lift to offset an RCW-induced LLD
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
40 participants (estimated)

Study arms

  • Other
    Tall RCW

    Device: RCW design form

  • Other
    Short RCW with contralateral lift

    Device: RCW design form

Interventions

  • DeviceRCW design form

    Tall RCW= a knee high removable cast walker with an offloading insole Short RCW= an ankle high (extending up the leg just past the ankle) removable cast walker with an offloading insole, paired with an external shoe lift to be used with a diabetic shoe on the contralateral limb

06

What researchers measure

Primary outcomes

  1. Offloading adherence

    Percent of weight bearing activity completed while wearing the RCW

    Time frame: days 0-28

Secondary outcomes

  1. Diabetic Foot Ulcer Healing

    Planimetric wound area

    Time frame: each clinical visit during days 0-28

  2. Cumulative plantar tissue stress

    A measure to account for the interaction between offloading capacity of the RCW and device use

    Time frame: days 0-28

Other outcomes

  1. Stability

    three separate measures taken during walking and standing (local divergence exponent of he trunk; motor equivalent index during small standing perturbations; and posterior stepping threshold for large perturbations while standing)

    Time frame: follow up visit (32-38 days after baseline)

  2. Correlates of joint pain

    Four separate biomechanical measures related to back, hip and knee pain taken during walking in a motion capture lab (peak pelvic obliquity; peak pelvic tilt; ground reaction force transience; and rate of grand reaction force loading)

    Time frame: follow up visit (32-38 days after baseline)

07

Study locations

1 of 1 sites recruiting
  • Rosalind Franklin University of Medicine and Science
    North Chicago, Illinois 60064, United States
    Recruiting
    • Noah J Rosenblat, PhD · Contact
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Aug 2023 (actual). Primary completion is estimated for Apr 2027, 44 months after the start.

Of 1,583 non-industry interventional studies with no phase under Diabetes Mellitus, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 43. This study's planned 44 months is above that.

Counting every sponsor, half of 1,743 studies reached it within 21 months; a quarter within 9 and three quarters within 42.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 8, 2022
First posted
Jun 13, 2022
StartActual
Aug 2, 2023
Primary completionEst.
Apr 30, 2027
CompletionEst.
May 30, 2027
Last update
Aug 19, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 19, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05415878
Lead sponsor
Rosalind Franklin University of Medicine and Science
Collaborators
Manchester Metropolitan University
Responsible party
Noah Rosenblatt (Associate Professor, Rosalind Franklin University of Medicine and Science) — Principal investigator
First posted
Jun 13, 2022
Start date
Aug 2, 2023
Primary completion
Apr 30, 2027 (estimated)
Completion
May 30, 2027 (estimated)
Last update
Aug 19, 2026

Study contacts

Noah J Rosenblatt, PhD
Contact
noah.rosenblatt@rosalindfranklin.edu
8475788425
Ryan Crews, PhD
Contact
ryan.crews@rosalindfranklin.edu
Noah J Rosenblatt, PhD
principal investigator · Rosalind Franklin University of Medicine and Science

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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