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Assessment of Neural and Motor Performance

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT04241588
Recruitment Status : Recruiting
First Posted : January 27, 2020
Last Update Posted : November 27, 2020
Information provided by (Responsible Party):
Jorge M. Zuniga, University of Nebraska

Brief Summary:
The neural basis underlying motor performance in children using a prosthesis has been severely understudied resulting in minimal empirical evidence. With the use of low-cost 3D printed prosthetics, the purpose of this study is to examine the assessment of primary motor cortex activation and the representation of gray and white matter in a child with congenital limb loss. This will be accomplished by cross-examining results from fNIR and Anatomical Magnetic Resonance Imaging (MRI). The proposed research uses anatomical MRI to test if children with unilateral congenital partial hand reductions demonstrate less gray and white matter in the motor representation zones. Moreover, the proposed research will focus on an assessment of motor performance using continuous and discrete tasks with a robotic manipulandum. Assessment of motor performance and neural networking are critical to increasing our limited knowledge of how the child increases the number of motor repertoires.

Condition or disease Intervention/treatment
Amniotic Band Syndrome Upper Extremity Deformities, Congenital Device: 3D Printed Upper-limb Prosthesis

Detailed Description:

The investigators anticipate enrolling a total of 40children between 3 and 18 years of age. Specifically, two groups of children will be recruited; children with unilateral congenital upper-limb reductions (n=20) and age and sex-matched control group of typically developing children (n=20). Considering the effect size from preliminary data and to account for a 10% drop-out rate, a total sample of 40 subjects will provide 80% power to detect a true standardized effect size.

All subjects including controls will attend four data collection sessions that will include: one fitting session, second to obtain a baseline, the third visit will be one month after baseline, and the final visit will be four months after baseline. Participants will attend an initial measurement session to take a 3D scan of the affected and nonaffected upper limbs as well as several anthropometric measurements. During this session, three pictures of the upper limbs will be taken which will also be used to verify the fit the prostheses in a process previously validated by our research team. The subjects will then perform an anatomical MRI scan. The MRI scan is not a clinical scan intended for diagnostic or therapeutic purposes. The research participants will then be asked to come for two testing visits. During the first testing visit (visit 1), participants will be fitted with the prosthesis and required adjustments to improve comfort and avoid pressure point will be performed. After fitting the prosthesis, participants will be given 15 minutes to explore the prosthesis and adjust the tensioner dial to regulate the opening of the fingers to perform the Box and Block Test. After the training and accommodation period, participants will be asked to perform 3 trials of flexion and extension of each wrist with and without the prosthesis and 3 different trials of the Box and Blocks Test for each hand while monitoring neural activity of the primary motor cortex using a fNIRS device. After a brief period of rest and encouragement, the subject will be asked to perform eight trials of discrete (four trials) and continuous (four trials) tasks using a robotic manipulandum (InMotion Arm Robot, Interactive Motion Technologies, Inc., Cambridge, MA, USA). These tasks have been previously used for the assessment of changes in upper-limb performance and the effect of different treatments in the recovering of motor function of children with acquired or congenital hemiparesis, ataxia, and hemiparesis. This data collection performed at baseline will be performed again one and four months after baseline. Eight weeks after the baseline measurements, participants will be asked to visit our laboratory for a second time and perform the same assessments. Between the testing visits, participants will be encouraged to use the prosthesis for a minimum of 2 hours a day.

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Study Type : Observational
Estimated Enrollment : 40 participants
Observational Model: Case-Control
Time Perspective: Prospective
Official Title: Assessment of Neural and Motor Performance in Upper Limb Deficient Subjects Using Discrete and Continuous Tasks. Anatomical Differences of Brain Gray and White Matter Resulting From Unilateral Congenital Upper Limb Loss
Estimated Study Start Date : November 20, 2020
Estimated Primary Completion Date : August 2023
Estimated Study Completion Date : August 2023

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Artificial Limbs

Group/Cohort Intervention/treatment
3D prostheses users
Children with unilateral congenital upper-limb reductions
Device: 3D Printed Upper-limb Prosthesis
The fingers and thumb were made of polylactic acid polymer manufactured using industrial 3D printers. The palm, socket, forearm brace, and leveraging the structure were made of polylactic acid which has properties similar to thermoplastic that facilitate post-manufacturing adjustments. Elastic cords placed inside the dorsal aspect of the fingers provided passive finger extension. Finger flexion was driven by non-elastic cords along the palmar surface of each finger and was activated through 20-30 degrees of wrist or elbow flexion. The device will be given to participants so that they may practice using the device at home.
Other Name: Prosthesis use

Typically Developing Children
Age- and sex-matched control group of typically developing children.

Primary Outcome Measures :
  1. Change of mean values of brain hemodynamic responses [ Time Frame: Change from baseline of mean values of brain hemodynamic responses at 4 month. ]
    The oxy-hemoglobin (HbO) and deoxy-hemoglobin (HbR) are two major chromospheres in the blood which absorb NIR light. The concentration of HbO and HbR varies in the capillary blood during the rest and task sessions. Thus, brain functional information can be revealed by the estimation of HbO and HbR. HbT is the total hemoglobin.

  2. Change of hemispheric dominance [ Time Frame: Change from baseline of hemispheric dominance at 4 months. ]

    Measured using the Laterality Index revealing hemispheric dominance. The Laterality index will reveal hemispheric dominance using the following formula:

    Laterality index=(Oxy l-Oxy r)/(Oxy l+Oxy r) In this equation, l represents the channels from the left hemisphere and r indicates the channels from the right hemisphere. The Laterality index value will reveal which channels in the group showed a higher change during the task. Positive values indicate left-hemisphere dominant activation, while negative values indicate a right-hemisphere dominant activation.

  3. Change of synchrony of hand movement [ Time Frame: Change from baseline of retention and transfer of motor skills in 4 months. ]
    The synchrony of hands movement will be quantified as the absolute temporal difference between hands (non-affected hand and affected hand with prosthesis) at six points in time while moving a bilateral instrumented tray.

  4. Change of movement duration [ Time Frame: Change from baseline of movement duration at 4 months. ]
    Movement duration for continuous and discrete tasks will be measured while completing robotic manipulandum tasks.

Secondary Outcome Measures :
  1. Satisfaction assessed by the Project-Prosthesis Satisfaction Inventory (CAPP-PSI). [ Time Frame: After 1,2, and 4 months ]
    The parents of the participants select a response for each question using the following categories which are scored from 0 to 4: "not at all" =0, "a little" =1, "somewhat" =2, "a lot" =3, or "very much" =4. A higher score indicates higher satisfaction. The CAPP-PSI is a standardized measure of prosthesis satisfaction in children with limb deficiency.

  2. Satisfaction assessed by the Orthotics Prosthetics Users' Survey (OPUS). [ Time Frame: After 1,2, and 4 months ]
    The parents of the participants select a response for each question using the following categories which are scored from 5=Very Satisfied, 4= Somewhat satisfied, 3=Neither, satisfied nor dissatisfied, 2=Somewhat dissatisfied, 1=Very Dissatisfied. A higher score indicates higher satisfaction. The OPUS is a self-report questionnaire consisting of five modules. Module 5 (OPUS Satisfaction) will be used to assess different satisfaction element.

Information from the National Library of Medicine

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Ages Eligible for Study:   3 Years to 80 Years   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Nebraska residents and residents from other states will be invited to participate in the research study.

Inclusion Criteria:

  • Age 3-80 years.
  • Individuals missing any digits, hand, arm, shoulder.
  • Any dysfunction of the upper limbs.

Exclusion Criteria:

  • Participants who are outside of age range.
  • Participants with upper extremity injury within the past month.
  • Medical conditions which would be contraindications to wear a prosthetic or assistive device, Such as skin abrasions and musculoskeletal injuries in the upper limbs.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04241588

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Contact: Jorge M Zuniga, Ph.D. 4024291288

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United States, Nebraska
Biomechanics Research Building Recruiting
Omaha, Nebraska, United States, 68182
Contact: Jorge Zuniga, Ph.D.    402-429-1288   
University of Nebraska Omaha Not yet recruiting
Omaha, Nebraska, United States, 68182
Contact: Jorge M Zuniga, Ph.D.    402-429-1288      
Sponsors and Collaborators
University of Nebraska
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Responsible Party: Jorge M. Zuniga, Associate Professor of Biomechanics, University of Nebraska Identifier: NCT04241588    
Other Study ID Numbers: IRB # 589-19-FB
First Posted: January 27, 2020    Key Record Dates
Last Update Posted: November 27, 2020
Last Verified: November 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Plan Description: Unidentified data

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: Yes
Product Manufactured in and Exported from the U.S.: No
Additional relevant MeSH terms:
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Upper Extremity Deformities, Congenital
Amniotic Band Syndrome
Congenital Abnormalities
Limb Deformities, Congenital
Musculoskeletal Abnormalities
Musculoskeletal Diseases
Infant, Newborn, Diseases