Archive for category Paretic Hand
[Abstract] A soft supernumerary robotic finger and mobile arm support for grasping compensation and hemiparetic upper limb rehabilitation
In this paper, we present the combination of our soft supernumerary robotic finger i.e. Soft-SixthFinger with a commercially available zero gravity arm support, the SaeboMAS. The overall proposed system can provide the needed assistance during paretic upper limb rehabilitation involving both grasping and arm mobility to solve task-oriented activities. The Soft-SixthFinger is a wearable robotic supernumerary finger designed to be used as an active assistive device by post stroke patients to compensate the paretic hand grasp. The device works jointly with the paretic hand/arm to grasp an object similarly to the two parts of a robotic gripper. The SaeboMAS is a commercially available mobile arm support to neutralize gravity effects on the paretic arm specifically designed to facilitate and challenge the weakened shoulder muscles during functional tasks. The proposed system has been designed to be used during the rehabilitation phase when the arm is potentially able to recover its functionality, but the hand is still not able to perform a grasp due to the lack of an efficient thumb opposition. The overall system also act as a motivation tool for the patients to perform task-oriented rehabilitation activities.
With the aid of proposed system, the patient can closely simulate the desired motion with the non-functional arm for rehabilitation purposes, while performing a grasp with the help of the Soft-SixthFinger. As a pilot study we tested the proposed system with a chronic stroke patient to evaluate how the mobile arm support in conjunction with a robotic supernumerary finger can help in performing the tasks requiring the manipulation of grasped object through the paretic arm. In particular, we performed the Frenchay Arm Test (FAT) and Box and Block Test (BBT). The proposed system successfully enabled the patient to complete tasks which were previously impossible to perform.
Feeding and drinking are Activities of Daily Living which can be used to assess the motor control and functional ability of the upper limb. This paper presents the upper-limb kinematics during the execution of feeding and drinking activities, such analysis consisted in the measurement of angles of flexion for trunk and arm. Eight healthy subjects performed these activities in a simulated-environment while they were video recorded. Markers on anatomical landmarks were used to analyze the kinematics of the upper limb in the sagittal plane. Additionally an electro-hydraulic sensor was attached to each upper limb to assess the vertical position of the wrist relative to the shoulder. Results showed a difference on the angles of the elbow and trunk. The electro-hydraulic sensor showed to be an efficient way to record the vertical position of wrist.
RGS is a highly innovative Virtual Reality (VR) tool for the rehabilitation of deficits that occur after brain lesions and has been successfully used for the rehabilitation of the upper extremities after stroke.
The RGS is based on the neurobiological considerations that plasticity of the brain remains throughout life and therefore can be utilized to achieve functional reorganization of the brain areas affected by stroke. This can be realized by means of activation of secondary motor areas such as the so called mirror neurons system.
RGS deploys a deficit oriented training approach. Specifically, while training with RGS the patient is playing individualized games where movement execution is combined with the observation of correlated actions performed by a virtual body. The system optimizes the user’s training by analyzing the qualitative and quantitative aspects of the user’s performance. This warranties a detailed assessment of the deficits of the patient and their recovery dynamics.
also see specs.upf.edu
[ARTICLE] Eclectic/mixed model method for upper extremity functional recovery in stroke rehabilitation: A pilot study
Background: Eclectic treatment method is a flexible approach that uses techniques drawn from various schools of thought involving several treatment methods and allows the therapist to adapt to each client’s individual needs. Wider application for eclectic approach is however limited in stroke rehabilitation. Aim: The objective is to find out whether eclectic approach improves upper extremity (UE) functional recovery in acute stroke rehabilitation. Methodology: Twenty-five postacute unilateral supratentorial stroke subjects recruited from tertiary care hospitals recovered with Stage 2–5 in Brunnstorm stage of UE motor recovery (BRS-UE) underwent 45 min of eclectic approach for UE every day involving seven different treatment methods (5 min for each method) for 6 days consecutively. The outcome was UE subscale of the Fugl-Meyer Motor test (UE-FM), UE subscale of the Stroke Rehabilitation Assessment of Movement (UE-STREAM), Wolf Motor Function test (WMFT-FAS), and Stroke Impact Scale-16 (SIS-16) was collected at the end of the sixth session. Results: All the participants showed significant improvement in all the outcome measures. The Stage 2 and 3 subjects showed UE-STREAM (P = 0.007) WMFT-FAS (P < 0.001), SIS (P = 0.023) respectively and for Stage 4 and 5 the subjects have shown UE FM (P < 0.001), WMFT-FAS (P < 0.001), SIS (P = 0.004) with large magnitude of treatment effect for all stages of BRS-UE. Conclusion: Our study findings are in favor of integrating eclectic approach than single intervention/approach in clinical practice to improve the UE functional recovery for motor rehabilitation when the stroke occurs.
Globally, stroke is the third major cause of mortality and a major health issue in low- and middle-income countries like India.Eighty percent of stroke survivors experience motor impairments (hemiparesis) typically affecting movement of the face, arm, trunk, and leg of one side of the body often persistent and disabling them. These residual impairments limit their functional independence and predisposing them to restrict their participation in community and social roles.,
Upper limb hemiparesis is one of the primary impairments following the stroke. It is often reported to be incomplete in functional recovery and to restore the motor skills. The studies on recovery of voluntary arm movements have also shown that 5–20% of stroke survivors achieved complete functional recovery and 30–60% of paretic arm can never have complete recovery during the first 6 months after the stroke., Common upper extremity (UE) impairments after the stroke include paresis, loss of fractionated movement, abnormal muscle tone and/or changes in somatosensation, shoulder pain, and subluxation which prevents the functional use of the arm, bimanual tasks and also for fine motor skills., Post stroke, persistent arm motor impairment (a period of 1 year or above) can be associated with anxiety and poorer perception of health-related quality of life and subjective well-being.,
One of the primary aims of the stroke rehabilitation is to improve the arm functions and to regain the gross and fine motor skills. Currently, the existing rehabilitation protocols that are designed to improve UE functions include the various treatment methods/interventions such as Roods, Brunnstorm, proprioceptive neuromuscular facilitation, neuro-developmental therapy techniques, repetitive/task-specific training, strength training, sensorimotor interventions, constraint-induced movement therapy, virtual reality, spasticity treatment, electromyographic/biofeedback, transcutaneous electrical nerve stimulation, neuromuscular electrical stimulation, functional electric stimulation, motor imagery, mirror therapy, and bilateral arm training. However, recent systematic reviews have concluded that there is insufficient evidence observed for any intervention or approach that can currently be used in routine practice to improve the paretic upper limb functions.
An eclectic therapy is a therapeutic approach that incorporates a variety of therapeutic principles and philosophies to create the ideal treatment program to meet the specific needs of the patient or client. The intervention of an eclectic approach is based on the stable principles of the classic traditional methods but is open to refining and can be used in conjunction with the elements of other various new methods, thus providing a framework for designing an optimal neurorehabilitation protocol., The studies have shown that the eclectic approach is suitable for a diverse and complex set of patients.,, However, wider application of eclectic approach in stroke rehabilitation is limited in literature.
[Research Poster] Upper Limb Virtual Reality Training Provides Increased Activity Compared With Conventional Training for Severely Affected Subacute Patients After Stroke
To compare amount of activity of virtual reality (VR) and conventional task-oriented training (CT).
Source: Upper Limb Virtual Reality Training Provides Increased Activity Compared With Conventional Training for Severely Affected Subacute Patients After Stroke – Archives of Physical Medicine and Rehabilitation
[Abstract+References] Design and test of a Microsoft Kinect-based system for delivering adaptive visual feedback to stroke patients during training of upper limb movement
The present paper describes the design and test of a low-cost Microsoft Kinect-based system for delivering adaptive visual feedback to stroke patients during the execution of an upper limb exercise.
Eleven sub-acute stroke patients with varying degrees of upper limb function were recruited. Each subject participated in a control session (repeated twice) and a feedback session (repeated twice). In each session, the subjects were presented with a rectangular pattern displayed on a vertical mounted monitor embedded in the table in front of the patient.
The subjects were asked to move a marker inside the rectangular pattern by using their most affected hand. During the feedback session, the thickness of the rectangular pattern was changed according to the performance of the subject, and the color of the marker changed according to its position, thereby guiding the subject’s movements. In the control session, the thickness of the rectangular pattern and the color of the marker did not change.
The results showed that the movement similarity and smoothness was higher in the feedback session than in the control session while the duration of the movement was longer. The present study showed that adaptive visual feedback delivered by use of the Kinect sensor can increase the similarity and smoothness of upper limb movement in stroke patients.
[Abstract+References] Development of a tool to facilitate real life activity retraining in hand and arm therapy
Successful recovery of upper extremity function after stroke is more likely when the affected limb is used regularly in daily life. We developed an iPad (Apple) application called the ‘Aid for Decision-Making in Occupation Choice for Hand’ to facilitate daily upper extremity use. This study examined the suitability of items and pictures in the Aid for Decision-Making in Occupation Choice for Hand, and tested a paper prototype of the application (which has since been produced).
We used a Delphi method with 10 expert occupational therapists to refine the items in the aid. Next, we prepared pictures of items in the aid and confirmed their suitability by testing them with 10 patients (seven stroke, three cervical spondylotic myelopathy). Nine occupational therapists conducted field tests with a paper prototype of the aid in clinical practice to examine its utility.
After four Delphi rounds, we selected 130 items representing activities of daily living, organized into 16 categories. Of 130 pictures, 128 were recognizable to patients as representing the intended activities. Based on testing of the paper prototype, we found the Aid for Decision-Making in Occupation Choice for Hand process was suitable for clinical practice, and could be organized into six steps.
The Aid for Decision-Making in Occupation Choice for Hand process may promote daily upper extremity use. This application, since developed, now needs to be clinically tested in its digital form.
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[Abstract+References] Movement Kinematics of the Ipsilesional Upper Extremity in Persons With Moderate or Mild Stroke
Background. An increasing number of studies have indicated that the ipsilesional arm may be impaired after stroke. There is, however, a lack of knowledge whether ipsilesional deficits influence movement performance during purposeful daily tasks.
Objective. The aim of this study was to investigate whether, and to what extent, movement impairments are present while performing an ipsilesional upper extremity task during the first 3 months after stroke.
Methods. Movement kinematics describing movement time, smoothness, velocity, strategy, and pattern were captured during a standardized drinking task in 40 persons with first-ever stroke and 20 controls. Kinematics were measured early and at 3 months poststroke, and sensorimotor impairment was assessed with Fugl-Meyer Assessment in stroke.
Results. Half of the ipsilesional kinematics showed significant deficits early after stroke compared to controls, and the stroke severity had a significant impact on the kinematics. Movements of the ipsilesional arm were slower, less smooth, demonstrated prolonged relative time in deceleration, and increased arm abduction during drinking. Kinematics improved over time and reached a level comparable with controls at 3 months, except for angular velocity of the elbow and deceleration time in reaching for those with more severe motor impairment.
Conclusions. This study demonstrates that movements of the ipsilesional arm, during a purposeful daily task, are impaired after stroke. These deficits are more prominent early after stroke and when the motor impairment is more severe. In clinical studies and praxis, the use of less-affected arm as a reference may underestimate the level of impairment and extent of recovery.
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Saebo, Inc., is a leading global provider of innovative rehabilitation products for stroke survivors and other neurologically impaired individuals. Headquartered in Charlotte, NC, the company was founded in 2001 by two occupational therapists specializing in stroke rehabilitation. As the leading cause of long-term disability in the U.S., stroke affects over 700,000 Americans every year, leaving many with crippling side affects including the loss of hand function. Saebos pioneering treatment protocols are based on new research documenting the brains remarkable ability to re-program itself following injury.
The companys neurological orthotic devices, including the ground-breaking SaeboFlex and SaeboReach, allow patients with very little residual arm and hand function to immediately begin performing task-oriented, grasp and release activities, thereby forging new pathways in the brain. Named Most Valuable Product in 2008 by Therapy Times, the Saebo Program is now offered as a treatment option at over 2,000clinics and hospitals nationwide, including 22 of the Top 25 Rehabilitation Hospitals as ranked by U.S. News & World Report. The Saebo orthoses are also eligible for reimbursement by Medicare and most commercial insurers. With a network of over 6,000 trained clinicians spanning four continents, Saebo is committed to helping stroke survivors around the globe achieve a new level of independence.
Beginning with a twitch in his fingers about six months ago, a Canadian man has successfully re-animated his paralyzed hand after undergoing a nerve transfer surgery.
Tim Raglin regularly dove, headfirst, into the water at his family’s lake house. The 45-year old Canadian man had done so thousands of times without incident. In 2007, though Raglin hit his head on a rock in the shallow water, shattering a vertebra in his cervical spine.
His family pulled him to safety, saving him from drowning. However, for nine years, both his hands and feet were left paralyzed.
Now though, there’s hope for Raglin and others like him.
Raglin is the first Canadian to ever undergo a nerve transfer surgery. Dr. Kirsty Boyd from the Ottawa Hospital essentially rewired Raglin’s body– rerouting some of his fully-functional elbow nerves to his hand. Although Raglin had to wait several months for the nerves to regrow, this procedure allowed him to regain some control over his right hand.
ROAD TO INDEPENDENCE
After persevering for 18 months, Raglin was finally able to open his fingers during an occupational therapy session at The Ottawa Hospital Rehabilitation Centre.
“It was kind of a shock,” he said in an interview. “And it’s really moving now: There’s a lot of nerves touching muscles that are getting stronger…Every iteration, it just gets more and more exciting.”
It’s still a slow uphill battle for Raglin. The muscles in his hand have deteriorated from lack of use, so they tire easily. In addition, because Raglin is using a different nerve pathway to activate the muscles in his hand, it will take some time for his brain to adjust to the new system.
Despite these challenges, he has learned to close his fingers on something by flexing his bicep. In time, however, it’s expected his brain will figure out how to separate the triggers for his hand and his bicep.
“I’m not quite at the point where I can get a cup off the table, but I can envision myself doing that. I know I will be able to do that eventually—so it’s exciting to see that.”