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Study of an Orthotic Designed to Equalize Leg Lengths for Patients With Injuries Managed in Walking Boots

Prospective Randomized-controlled Trial of an Orthotic Designed to Equalize Leg Lengths for Patients With Injuries Managed in Walking Boots

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03848949
Enrollment
107
Registered
2019-02-21
Start date
2018-07-16
Completion date
2019-12-01
Last updated
2021-06-10

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

Conditions

Joint Pain, Trouble Balancing

Brief summary

Patients who undergo foot and ankle surgery are often made weight-bearing as tolerated (WBAT) in a controlled ankle movement (CAM) boot during their recovery and rehabilitation process. However, some patients may experience pain and discomfort while wearing the CAM boot. A possible cause for this pain is that the boot elevates the injured foot higher than the other foot in the normal shoe. This uneven walking plane can lead to an abnormal gait or walking pattern, and may potentially lead to pain. Our goal is the investigate if using a leg-length-evening orthotic can improve balance and/or decrease the development of pain in the legs and spine for patients who are WBAT in a CAM boot.

Detailed description

Patients with foot and ankle injuries are often made weight-bearing as tolerated (WBAT) in a controlled ankle movement (CAM) boot at some point during their recovery and rehabilitation period. While WBAT in a CAM boot, patients often experience an asymmetric gait associated with the effective leg length discrepancy between the booted extremity (longer) and the contralateral extremity with a regular shoe (shorter). This asymmetry may cause balance problems or place strain on the patient's joints resulting in back, knee, and hip pain. An orthotic has been designed that is added to the outside of a regular shoe in order to eliminate the effective leg length discrepancy between the booted extremity and the contralateral limb. Although this specific orthotic has not been studied, some proof of concept lies in studies that show that back pain can be managed with foot orthotics. The purpose of this study is to determine if using the leg-length-evening orthotic can improve balance and/or decrease the development of pain in the lower extremities and spine for patients who are WBAT in a CAM boot.

Interventions

DEVICEEvenup

Orthotic which increases effective leg length.

Sponsors

Rush University Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Masking description

Both patients and surgeons are aware whether they are being assigned to the control group or the experimental group

Intervention model description

Subjects are randomly assigned to two groups using a blocked randomization schedule. Subjects assigned to the control group receive the standard treatment for their condition, which must be at least 2 weeks of weight bearing as tolerated in a controlled ankle movement boot in order for them to meet inclusion criteria. Subjects assigned to the experimental group receive the orthotic for use on the contralateral limb, which is the only alteration to their treatment of at least 2 weeks of weight bearing as tolerated in a controlled ankle movement boot (required to meet inclusion criteria).

Eligibility

Sex/Gender
ALL
Age
18 Years to 64 Years
Healthy volunteers
No

Inclusion criteria

* must be weight bearing as tolerated and treated for at least 2 weeks in a controlled ankle movement boot.

Exclusion criteria

* unwilling to participate * being treated for an Achilles tendon rupture (and therefore being treated in a controlled ankle boot with heel lifts) * member of a special population

Design outcomes

Primary

MeasureTime frameDescription
Patient Reported Balance2 weeksPatient reported assessment of their balance while wearing the controlled ankle movement boot on a scale of 1 - 10 (higher values indicate better balance).
Patient Reported Pain2 weeksPatient reported assessment of joint pain while wearing the controlled ankle movement boot on scales of 1 - 10 (higher values indicate more pain).

Countries

United States

Participant flow

Pre-assignment details

Enrollment continued until the study met protocol requirement.

Participants by arm

ArmCount
Intervention
Patients who received the orthotic device.
49
Control
Patients who did not receive the orthotic device.
46
Total95

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up57

Baseline characteristics

CharacteristicInterventionControlTotal
Age, Continuous47 years
STANDARD_DEVIATION 2.5
48.8 years
STANDARD_DEVIATION 2.33
47.9 years
STANDARD_DEVIATION 1.7
Condition is tibiotalar or above
Condition at or proximal to tibiotalar joint
28 Participants26 Participants54 Participants
Condition is tibiotalar or above
Condition predominantly below or distal to tibiotalar joint
21 Participants20 Participants41 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Acute Achilles tendon rupture
0 Participants4 Participants4 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Ankle Impingement
2 Participants1 Participants3 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Ankle instability
2 Participants0 Participants2 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Ankle sprain
6 Participants8 Participants14 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Foot fracture
9 Participants8 Participants17 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Foot sprain
0 Participants2 Participants2 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Hindfoot arthritis
2 Participants1 Participants3 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Malleolar fracture
9 Participants10 Participants19 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Midfoot arthritis
1 Participants2 Participants3 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Other
4 Participants4 Participants8 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Peroneal pathology
2 Participants1 Participants3 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Plantar fasciitis
1 Participants0 Participants1 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Posterior tibial tendon dysfunction
3 Participants4 Participants7 Participants
Condition: malleolar fracture, foot fracture, ankle fracture, tibiotalar arthritis etc.
Tibiotalar arthritis
8 Participants1 Participants9 Participants
Postoperative versus nonoperative management
Nonoperative
32 Participants27 Participants59 Participants
Postoperative versus nonoperative management
Postoperative
17 Participants19 Participants36 Participants
Race and Ethnicity Not Collected0 Participants
Region of Enrollment
United States
49 participants46 participants95 participants
Sex: Female, Male
Female
32 Participants28 Participants60 Participants
Sex: Female, Male
Male
17 Participants18 Participants35 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 490 / 46
other
Total, other adverse events
0 / 490 / 46
serious
Total, serious adverse events
0 / 490 / 46

Outcome results

Primary

Patient Reported Balance

Patient reported assessment of their balance while wearing the controlled ankle movement boot on a scale of 1 - 10 (higher values indicate better balance).

Time frame: 2 weeks

ArmMeasureValue (MEAN)Dispersion
Orthotic GroupPatient Reported Balance3.0 units on a scaleStandard Deviation 1.7
ControlPatient Reported Balance2.1 units on a scaleStandard Deviation 1.7
Primary

Patient Reported Pain

Patient reported assessment of joint pain while wearing the controlled ankle movement boot on scales of 1 - 10 (higher values indicate more pain).

Time frame: 2 weeks

ArmMeasureValue (MEAN)Dispersion
Orthotic GroupPatient Reported Pain4.9 score on a scaleStandard Deviation 5.6
ControlPatient Reported Pain3.9 score on a scaleStandard Deviation 5.1

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026