Neurorehabilitation And Technology – A Systematic Review And Meta-Analysis

With evolving innovations, physical therapy has adapted advancements of technology to impact a patient’s recovery with interactive rehabilitation and improve the quality of life. Physical therapy has enriched the patient’s experience and seeking newways to improvise the treatment strategies for patients either in clinical setup or home-based rehabilitation. Evidence suggests that the amount of time spent by the therapist in rehabilitation has led to an increase in the progression of the patients physically and mentally. Still, with the increase in the grey population, it has put a strain on the skills of therapist attending such patients and has been chosen as an adjunct to traditional therapies. To understand the emerging interactive technology in improving the thorough rehabilitation this review of literature was done. This study was conducted according to PRISMA guidelines, and PEDro scale was applied to ind out the methodological quantity. Relevant Original articles based on randomised control trials (RCT) interpreting the in luence of the use of technology in the prognosis of the patient’s rehabilitation from CINHAL, Scopus, Cochrane, Elsevier, Science Direct, research Gate and Pubmed were included. This study summarises that technology is an assistive tool for both physiotherapist and patients in showing prognosis in rehabilitation and improving the quality of life at home and community-based set up. Technology is promising rehabilitative intervention, although the evidence for this approach for rehabilitation purposes is still only moderate to weak. And that their effectiveness over traditional treatment which has yet to be established.


INTRODUCTION
The global prevalence of neurological disorders, in 2016 was the leading cause of DALYs (276 [95% UI 247-308] million) also a second leading cause of 9 million deaths, in India, the prevalence is about 1.27 billion, approximately 30 million people suffer from neurological disorders (Gourie-Devi, 2014). Ten million British population have been suffering from long term neurological condition, which requires an expenditure on health services like inpatient and outpatients, which is estimated to be £2.9 billion in 2009-2010. Apart from these direct expenses the everyday expenses as the unpaid care is on substantial increase patients rely on their family for support and care, which in turn gives stress, fatigue, anxiety to their family this endorses the importance of developing feasible, portable, cost-effective technology in the therapy protocol (Jackson et al., 2013).
Among the neurological disorders, stroke is the leading cause of disability. The amount of hospitalisation has been alarmingly increased globally and in India and looking at the different intensities of physical therapy treatment, a signi icant prognosis in Activities of Daily living is seen, as a result of higher intensity of treatment (Jones et al., 1999). The average amount of time spent by the therapist in the rehabilitation centre is about 59% of their time (Steenkamp et al., 2003). Further studies have shown that the amount of time spent by a stroke patient in their 9-hour active period is just 0.5 hours, which has put a burden on the therapist to show the prognosis in preferred time and duration (Kaur et al., 2012).
Globally smartphones are used by 3.5 billion (2016 to 2021; Statista) , and in India alone, there were around 51 million smartphone users in 2013. Recent statistics show 83% of the smartphones are turned on and always with users (Rodríguez et al., 2018). Ninety-seven thousand health-related apps are useful and reliable when used as a complementary treatment alongside rehabilitation, especially those that are designed to promote a healthy lifestyle, retrain balance, assess disorders, improve therapist-patient interaction (Micera et al., 2005).
The use of robotics has increased the therapistpatient interaction to a more considerable extent, thus in luencing the patient in getting independent functionally. The factors as global population greying are 137 million (Gassert and Dietz, 2018), a worldwide shortfall of rehabilitation professionals, increasing evidence, advancements and proliferation in technology fuels the advanced rehabilitation of ecosystems (Béjot and Yaffe, 2019).
Moss talk word is a multinodular software developed for aphasia patients with help in phonology and word retrieval. This innovation showed significant improvement in patient satisfaction and minimal clinician guidance, but for the older generation the moss talk word was still unfamiliar and challenging (Jokel et al., 2009). Constraint-induced movement therapy has focused on the learned nonuse, showing results in improved motor performance and functional abilities on the hemiparetic side with improved quality of life. Extensive studies have done using CIMT with robotics and body weight support showing more signi icant cortical and subcortical stimulation. Amongst these body weight support with harnesses have shown a disadvantage, on the effort of the therapist to align the paretic limb and control the weight shift . With the addition of treadmill later provided ef icient gait training resulting in returning to walking faster (Mehrholz et al., 2017).
Functional electrical stimulation which used a coordinated burst of electricity on the peripheral nerves of the paretic limb proved to improved muscle activation during the motor performance, clearance of foot while walking leading to reduced falls and improved gait symmetry. However, depending on the therapist's decision to introduce them during therapy protocol had kept them as an adjunct tool (Embrey et al., 2010).
Mechanical devises like MIT-MANUS, MIME, The Lokomat have shown signi icant improvement in reaching movements, guiding the paretic arm, gains with independent ambulation .
Limb apraxia can cause disabling effects on the paretic side because of trajectory timing and purpose of movements are dysfunctional. Adding a robotic technology can limit the feedback on movement accuracy; thus, further research is directed towards assessing the strength and skilful, accurate movement acquisition.
There are limited evidence showing any particular design over other and future studies are to be held on providing a standard design, perfect actuator design and feedback to maximise patient safety which can be generalised in the usage of soft robots (Westlake and Patten, 2009).
In the inpatient phase at this phase, the traditional therapies and intensity drops drastically, to bridge the gaps portable, less complicated, cost-effective robots, telerehabilitation systems at home, have been on the rise and popular among patients for faster recovery (Gupta and Raja, 2011).
One of the signi icant limitations of these conventional therapies is they often provide insuf icient treatment in terms of intensity and repetitions. Hence rehabilitation technology has been identi ied to the priority area in the research ield also it cannot be used as a standalone therapy. Even though such innovations pose a threat to the therapist jobs, it has been analysed that these technologies need set up, programming and monitoring, which is impossible without a therapist .
Rehabilitation has been revolutionised with the use of robots, mobile apps, telerehabilitation, virtual reality, wearable motion tracking system and many other technologies along with which much research has been carried out. But, In India, only three robotic devices were installed by 2009. The need and objective of this study aim to ind out the amount of technology persuading the replacement of Physical Therapist in-person sessions, or it can only be of adjunctive use to rehabilitative protocols that are being devised by the physiotherapist, thus reducing the physical workload and strain.
The purpose of this study is to review through the literature, the effectiveness of the technology used as a protocol in the rehabilitation process, whether they have established set goals that can be applied independently as a treatment or is it validated only as an adjunct therapy which adds value to the conventional therapy monitored by a skilled therapist.

MATERIALS AND METHODS
A literature search was conducted from Jan 2020 on the in luence of technology in the progression of neurorehabilitation using critical words as neurorehabilitation, mobile apps, robotic assistive devices, computer-human interface, soft robots, augmented robots, telerehabilitation, motion tracking system, the virtual reality according to the PRISMA guidelines [PRISMA-P (Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols) 2015 checklist]. The literature articles were obtained from CINHAL, Scopus, Cochrane, Elsevier, Science Direct and PubMed. Use of technology has increased drastically and is a novel ield; we have limited ourselves to the articles published in the last six years to be updated on recent studies. The methodological quality was assessed by the Physiotherapy Evidence Database (PEDro) tool; data were extracted on the bases of selection criteria provided.
While using the PEDro tool, each article was rated over an 11-item scale. Each item required a yes or no response. The irst item on the PEDro tool was a measure of external validity and thus was excluded while scoring inally and which totals to a inal score of 10. This tool has provided acceptable validity and reliability in quantifying the quality of each study.

Inclusion criteria
Studies were included if all the articles were published in English and studies which involved technology using apps, robotic devices for neurorehabilitation from the year 2014, Randomised control trials, studies included samples which were neurological conditions, articles having interventional group provided with a technological protocol and control group having conventional protocol there was no restriction on the sample size.

Exclusion criteria
The study excluded articles from other languages, conditions other than neurological ailments, Review articles, meta-analyses, systematic analysis, study protocols and editorials were excluded.

Methodology
Articles were searched using keywords as neurore-habilitation, mobile apps, robotic assistive devices, computer-human interface, soft robots, augmented robots, telerehabilitation, motion tracking system, virtual reality, from the databases the articles were iltered and selected based on inclusion and exclusion criteria. The low chart below shows the search results (Figure 1). A few review articles from n= 21 systematically analysed articles are mention below in (Table 1), which gives an idea about the tabulation done and the information which was extracted from each article.

Statistical Analysis
The total number of RCTs were tallied in the scores obtained by the PEDro scale, and the continuous data were summarised as analysis of percentage and with proportion Z-test. The mean, median and standard deviation were analysed over the PEDro scores and items in the scale. The statistical analysis was conducted on online software.

RESULTS AND DISCUSSION
The overall mean scores on the PEDro were 6.57. The median was 6, with a standard deviation of 1.3299. The methodological quality of the studies conducted showed 19% being low on the score 4-5, 57% being good quality on the scores 6-7 and 23.8% having excellent quality on the scores 8-10 (Graph 1).
On examining the PEDro items, some of the items showed signi icance concerning the articles which satis ied each item on the scale. They showed higher adherence in the protocol of RCT in items as random allocation, groups being similar at baseline and at least one key outcome showed point measures in these studies accounting for 100%. The items where the results of at least one key outcome showed between-group comparison was 95%, sample size of 85% were reported to be 81%, and assessor blinding was 71% which showed the amount of bias is reduced in the studies. Items such as concealed allocation reported to be 47%, intention to treat and subject blinding reported being 29 %. Therapist blinding accounted for only 5%. These low results might be due to the intervention provided and sample population used.
Neurorehabilitation can be explained as a process to optimise patient's participation in the society and to provide a sense of wellbeing. It also emphasises on rehabilitation not being an intervention instead focusing on patient's goals as social functioning and deals with patient's long-term problems (Oña et al., 2018).   (Hassett et al., 2020) 300

Studies have been conducted in India on the preva-
Mobility limitations in neurological patients and elderly patients virtual reality, wearables, and tablet and smartphone applications IV and CG = conventional physiotherapy, IV group, was added with 30 to 60 5 days /week There was a signi icant improvement in mobility in the IV group *IV=interventional group, CG = control group, n= number of samples, VR= virtualreality, RAGT= robot assisted gait training, EEG= Electroencephalography, MI= Motor Imagery,BCI=Brain-Computer Interface, HK= Haptic Knob robot, TR= telerehabilitation,rTMS= transcranial magnetic stimulation, ILAT=Intensive Language-ActionTherapy lence of neurological disorder which are a burden on the available present health care system, as the ratio of neurological patient's to health care is not enough to improve the quality of life and also to provide a long-term follow-up for the residual disabilities which are prevailing and delaying the recovery process. With the analysis of the trends in Asia majorly India has shown the occurrence of stroke among not only senior but also in the young population. (Gourie-Devi, 2014), which supports this study on the use of technology in rehabilitation protocol.
Functional electrical stimulation, transcranial stimulation, robotic assistive devices, body weight treadmill training have all shown improvement in the functional performance of the patient, they have also shown independence to train among the stroke subjects, but when these were compared with traditional techniques, there was no signi icant improvement among the subjects undergoing the treatment in each groups (Ifejika-Jones and Barrett, 2011), which explains the concept that even though these technologies provide uplift to the recovery process, they have to be provided as an adjunctive therapy, which supports this study on the use of technology as assistive therapy and arising the need of more future studies for its effectiveness.
Technologies as robotic devices, arti icial intelligence, gait and balance gym, Nintendo, Wii, virtual training, bionic devices, soft robots, biofeedback, gait and balance sensors, mobile medical app, robotic aided pneumatic pump compressions, telerehabilitation have been on greater use recently and under intense study for their ef icacy and their contribution towards the health promotion. With the increase in geriatric population leading to increasing in neurological cases every year and thus putting a strain on the therapist-patient ratio for treatment, these technological innovations have proved to be assistive in rehabilitation and causing a change in the social wellbeing, under the guidance and supervision of the therapist. Still, they haven't been effective enough to replace the work of the therapist.
A study done by (Micera et al., 2005) on MEMOS system, a simple mechatronic device for neurorehabilitation has shown to be an effect on improving the level of impairment, movement accuracy and ef icacy, the limitations were cost-effectiveness and workspace. (Dicianno et al., 2015) described the emergence of mHealth technologies and to improve patient satisfaction, deliver care, and promote health and wellness, as the use of android and smartphones have been on the increase. These mobile apps can connect neurologically ill patients.
Studies on children with these technologies also gave a futuristic goal where (Gonsalves et al., 2015) conducted a study with active virtual reality gaming in children with a joint developmental disorder. Results showed that children used slower hand path speed. No data regarding movement outcome were assessed, and when appropriate active virtual reality gaming had to be selected.
Children with cerebral palsy of 3 to 8 years who were given virtual reality environment called REHAB FUN which was a motivating tool for the children to rehabilitate. Improving the quality of health care delivery, patient satisfaction, participation in self-care regimens, and behaviour modi ication with the evolution of mHealth technologies was explained in the study done by (Dicianno et al., 2015). Their study showed limitations as long-term effects of these apps, acceptability, costs, and risks of such interventions, which warranted more research. Also, such digital therapeutic pose a threat to privacy and security (Choi et al., 2019).
To overcome challenges in the treatment of the neurological ill subjects who pose a burden on the health care sector, on the family and caregivers and the rehabilitation team, there is a dire need for the innovations of cost-effectiveness and feasible of these technologies. These assistive technologies provide drastically improved in the long run, and they are integral to provide adequate training sessions required by the neurological patients. Still, they can be done by the supervision of the therapists; these technologies have not done better when compared with conventional therapy and are supportive of this study.
Assistive technology and specialist come in relevance when function, independence and participation are compromised in subject with muscular dystrophy. Use of small proportional joystick, robotics, Bluetooth capabilities, fall detection systems with built-in Global Positioning System detection, voice activation and texting systems on smartphones and tablets, and "smart home systems have helped in optimising function and improving the quality of life, but still have not provided cost-effective measures, funding and insurance for these devices have been in a critical situation. This supports our study in explaining the need for improvising economically ef icient technology-based devices which supports the needed frequent therapy sessions and extended the in luence of rehabilitation process even in the inactive hours of the patient. Despite these indings, a thorough examination is the need of the hour in emerging technology with RCTs, where RCTs form the gold standard in research.