A survey on the short to medium-term satisfaction of neurological patients treated by functional surgery for the correction of limb deformities.

OBJECTIVES: Functional surgery (FS) is often used to correct congenital or acquired deformities in neurological patients. Along with functional results, short- and medium-term patient satisfaction should always be considered a key goal of surgery and rehabilitation. The aim of this study is to assess the short to medium-term satisfaction of patients who underwent FS and its correlation with perceived improvements. METHODS: Invitation to an anonymous online survey was sent via e-mail to all neurological adult patients or caregivers of children who underwent lower or upper limb FS over the 2018-2020 period. The survey investigated patients' satisfaction with the surgery and the variation in pain, ADLs, level of independence, body image, self-esteem, social interaction skills, participation in social events, leisure activities and sports, and use of orthoses or walking aids. Descriptive data analysis was performed. Correlations were assessed using Kendall's tau. RESULTS: 122 out of 324 adults and 53 out of 163 children's caregivers filled out the questionnaire, with a response rate approaching 40%. Eighty-three percent of adult respondents and 87% of the children's caregivers were satisfied or very satisfied in the short and medium terms and reported their expectations had been met. Satisfaction was significantly correlated (p < 0.01) with improvements in functional abilities, social participation, self-esteem, and pain reduction. Half of the adults and 40% of children stopped using their orthoses or replaced them with lighter ones. Dissatisfaction and worsened conditions were reported by <10% of the respondents. CONCLUSION: According to patients and caregivers, FS was satisfactory in the short and medium terms, following improvements in all the ICF domains for most patients.

In this study, we studied the satisfaction of patients with neurological diseases and their caregivers about two years after having undergone surgery to correct lower and/or upper limb deformities. We mailed a specifically designed survey to adult patients and caregivers of children who had surgery at our hospital. The questionnaire asked about how satisfied they were with the surgery and if they felt any improvements in different domains: meeting previous expectations, pain level, daily activities, being autonomous, body image, self-esteem, social interaction, participation in social events, leisure activities, and the use of orthoses or walking aids. About 40% of the patients we contacted filled out the questionnaire. Most of them said they were happy with the results obtained and felt their pre-surgical expectations had been met. Satisfaction was associated with improvements in functional abilities, social participation, self-esteem, and lessening of pain. Many patients also stopped using orthoses or switched to lighter ones. Only a few people said they were not happy or felt worse after the surgery. These findings highlight the positive impact of surgery on patient well-being and motor abilities.

Machine learning applied to gait analysis data in cerebral palsy and stroke: A systematic review.

BACKGROUND: Among neurological pathologies, cerebral palsy and stroke are the main contributors to walking disorders. Machine learning methods have been proposed in the recent literature to analyze gait data from these patients. However, machine learning methods still fail to translate effectively into clinical applications. This systematic review addressed the gaps hindering the use of machine learning data analysis in the clinical assessment of cerebral palsy and stroke patients. RESEARCH QUESTION: What are the main challenges in transferring proposed machine learning methods to clinical applications? METHODS: PubMed, Web of Science, Scopus, and IEEE databases were searched for relevant publications on machine learning methods applied to gait analysis data from stroke and cerebral palsy patients until February the 23rd, 2023. Information related to the suitability, feasibility, and reliability of the proposed methods for their effective translation to clinical use was extracted, and quality was assessed based on a set of predefined questions. RESULTS: From 4120 resulting references, 63 met the inclusion criteria. Thirty-one studies used supervised, and 32 used unsupervised machine learning methods. Artificial neural networks and k-means clustering were the most used methods in each category. The lack of rationale for features and algorithm selection, the use of unrepresentative datasets, and the lack of clinical interpretability of the clustering outputs were the main factors hindering the clinical reliability and applicability of these methods. SIGNIFICANCE: The literature offers numerous machine learning methods for clustering gait data from cerebral palsy and stroke patients. However, the clinical significance of the proposed methods is still lacking, limiting their translation to real-world applications. The design of future studies must take into account clinical question, dataset significance, feature and model selection, and interpretability of the results, given their criticality for clinical translation.

Short-term reduction of ankle spasticity after surgical lengthening of the triceps surae in chronic post-stroke patients: a retrospective cohort study.

Introduction: In post-stroke patients with equinovarus foot deformity (EVFD), soft tissue rearrangements may contribute to muscle overactivity when a muscle is stretched or tension is applied. Therefore, we investigated the effects of surgically restoring the triceps surae (TS) length and lengthening ability on TS spasticity. Methods: This retrospective study included chronic post-stroke patients who underwent neuro-orthopedic surgery inclusive of TS lengthening. TS spasticity was measured using the Modified Tardieu Scale (MTS) before and 1 month after surgery, both with the knee extended (KE) and flexed (KF). MTS variations were analyzed using the Wilcoxon test. The time from stroke onset was compared between patients with and without post-surgical spasticity using the t-test. Statistical significance was set at 5%. Results: A total of 120 patients with EVFD, aged 57 (12) years, ranging from 1 to 36 years from stroke, were included in the study. The median MTS_KE score significantly decreased from 3 (range 0-4) to 2 (0-4) (p < 0.001) after surgery. The MTS score decreased by ≥1 point in more than half of the sample. Notably, 19 and 32 patients were completely relieved from spasticity (MTS = 0) in the KE and KF conditions, respectively. Post-surgical spasticity did not depend on the time since stroke onset (p = 0.560). Discussion: TS lengthening led to a short-term reduction of spasticity in 41% and 63% of chronic post-stroke patients in the gastro-soleus complex and soleus, respectively, with complete relief observed in 21% and 30% of the sample. Surgical lengthening can be considered an effective treatment that not only restores joint range of motion but also may reduce spasticity, even in chronic patients.

Lateral Pectoral Nerve Identification through Ultrasound-Guided Methylene Blue Injection during Selective Peripheral Neurectomy for Shoulder Spasticity: Proposal for a New Procedure.

Internally rotated and adducted shoulder is a common posture in upper limb spasticity. Selective peripheral neurectomy is a useful and viable surgical technique to ameliorate spasticity, and the lateral pectoral nerve (LPN) could be a potential good target to manage shoulder spasticity presenting with internal rotation. However, there are some limitations related to this procedure, such as potential anatomical variability and the necessity of intraoperative surgical exploration to identify the target nerve requiring wide surgical incisions. This could result in higher post-surgical discomfort for the patient. Therefore, the aim of our study was to describe a modification of the traditional selective peripheral neurectomy procedure of the LPN through the perioperative ultrasound-guided marking of the target nerve with methylene blue. The details of the localization and marking procedure are described, as well as the surgical technique of peripheral selective neurectomy and the potential advantages in terms of nerve localization, surgical precision and patients' post-surgical discomfort. We suggest that the proposed modified procedure could be a valid technique to address some current limitations and move the surgical treatment of spasticity toward increasingly tailored management due to the ease of nerve identification, the possibility of handling potential anatomical variability and the resulting smaller surgical incisions.

Sagittal kinematics and imbalance of the spine and whole body during walking in late-onset Pompe disease.

Late-onset Pompe disease (LOPD) is characterized by postural abnormalities mainly due to involvement of paraspinal lumbar and abdominal-pelvic muscles. Previous studies quantitatively analyzed static upright posture, spatial-temporal parameters, and kinematics of the lower limbs and trunk, considered as single bone segment. Sagittal plane analysis of the spine and whole body during walking has never been investigated in patients with LOPD. The aim of the study was to evaluate sagittal kinematics and imbalance of the spine and whole body in patients with LOPD by three-dimensional (3-D)-motion analysis using an appropriate marker set protocol and introducing innovative kinematic parameters. Seven siblings with LOPD were assessed by 3-D-stereophotogrammetry using the DB-total protocol, which allows to analyze sagittal alignment of whole body. Fourteen age- and sex-matched healthy subjects were used as controls. LOPD group showed a flattening of the spinal curvatures, with a head and neck posteriorization with respect to sacrum, a significant increase of concavity in Heel-S2-Nasion/C7 angles, a rear-position of upper limbs with respect to pelvis, a shorter pendular activity, and a trend of elbow extension during ambulation. Moreover, a significant increase of excursion range in most of sagittal parameters was found. The present study highlighted a specific pathological postural pattern, resembling "man falling backwards," which reveals a biomechanical compensation strategy of patients with LOPD to maintain the balance against the instability of the spinopelvic region, kinematically verified by increase of the excursion ranges. DB-total kinematic parameters might be useful for functional evaluation and for monitoring response to enzyme replacement therapy, rehabilitation project, and disease progression.NEW & NOTEWORTHY This study is the first to quantitatively characterize the sagittal spine and whole body posture of patients with late-onset Pompe disease during walking, showing a pathological kinematic pattern defined "man falling backwards." 3-D-motion analysis, with a specific marker set (DB-total protocol) introducing new whole body kinematic parameters, may be useful for accurate functional evaluation and monitoring this rare disease.

Short-term effects of foot surgery on walking-related pain, function, and satisfaction in patients with Charcot-Marie-Tooth disease: a prospective cohort study.

Introduction: Patients with Charcot-Marie-Tooth disease (CMT) often suffer from walking-related pain (WRP), muscle weakness, foot deformities, and reduced ankle dorsiflexion (DF), which affects their ability to walk and daily activities. Functional surgery (FS) can restore foot deviations, affecting the loading ability during gait. We assessed the short-term effects of FS in patients with CMT on WRP, foot and ankle structure, and function, along with patients' perceived improvement. Methods: This is a prospective cohort study on CMT patients who had undergone FS and rehabilitation. We analyzed the changes after 1 month, focusing on WRP, DF, the center of pressure progression (COPP) during walking, and measures of walking ability. The non-parametric Wilcoxon test was used. Results: Ten patients were included. One month after FS, WRP reduced from 5.5 (IQR = 3.5) to 2 (IQR = 3.5), p = 0.063, with an effect size of 0.615. The highest decrease was found in patients with very high pre-surgical pain levels. DF almost reached 10° for both active and passive movements (p < 0.05), and COPP improved from 44 to 60% (p = 0.009) of foot length. Gait speed, lower limb functioning, and balance did not change. More than half of the sample felt improved or much improved after FS. Conclusion: FS can be effective in reducing WRP and restoring foot posture in CMT patients in the short-term, which allows them to wear shoes, and leads to a perceived improvement and satisfaction. Lack of improvement in functional skills may be due to muscle weakness typical of CMT. Studies with longer follow-ups may confirm these hypotheses.

Evidence-based improvement of gait in post-stroke patients following robot-assisted training: A systematic review.

BACKGROUND: The recovery of walking after stroke is a priority goal for recovering autonomy. In the last years robotic systems employed for Robotic Assisted Gait Training (RAGT) were developed. However, literature and clinical practice did not offer standardized RAGT protocol or pattern of evaluation scales. OBJECTIVE: This systematic review aimed to summarize the available evidence on the use of RAGT in post-stroke, following the CICERONE Consensus indications. METHODS: The literature search was conducted on PubMed, Cochrane Library and PEDro, including studies with the following criteria: 1) adult post-stroke survivors with gait disability in acute/subacute/chronic phase; 2) RAGT as intervention; 3) any comparators; 4) outcome regarding impairment, activity, and participation; 5) both primary studies and reviews. RESULTS: Sixty-one articles were selected. Data about characteristics of patients, level of disability, robotic devices used, RAGT protocols, outcome measures, and level of evidence were extracted. CONCLUSION: It is possible to identify robotic devices that are more suitable for specific phase disease and level of disability, but we identified significant variability in dose and protocols. RAGT as an add-on treatment seemed to be prevalent. Further studies are needed to investigate the outcomes achieved as a function of RAGT doses delivered.

Surgical quadriceps lengthening can reduce quadriceps spasticity in chronic stroke patients. A case-control study.

Background: Muscle overactivity is one of the positive signs of upper motor neuron lesions. In these patients, the loss of muscle length and extensibility resulting from soft tissue rearrangement has been suggested as a contributing cause of muscle overactivity in response to stretching. Objective: To assess the effects of surgical lengthening of the quadriceps femoris (QF) muscle-tendon unit by aponeurectomy on muscle spasticity. Methods: This is a case-control study on chronic stroke patients with hemiparesis that have undergone lower limb functional surgery over a 8-year period. CASEs underwent corrective surgery for both the foot and knee deviations, inclusive of a QF aponeurectomy. Controls (CTRLs) underwent corrective surgery for foot deviations only. QF spasticity was assessed with the Modified Tardieu Scale (MTS) before and 1 month after surgery. The Wilcoxon test was used to assess MTS variations over time and the Mann-Whitney test was used to verify the presence of group differences at the 1 month mark. Results: Ninety-three patients were included: 57 cases (30F, 1-34 years from lesion) and 36 controls (12F, 1-35 years from lesion). Before surgery, both CASEs and CTRLs had similar MTS scores (median MTS = 3) and functional characteristics. One month after surgery, QF spasticity was significantly lower in the CASEs compared to CTRLs (p = 0.033) due to a significant reduction of the median MTS score from 3 to 0 in the CASE group (p < 0.001) and no variations in the CTRL group (p = 0.468). About half of the cases attained clinically significant MTS reductions and complete symptom relief even many years from the stroke. Conclusions: Functional surgery inclusive of QF aponeurectomy can be effective in reducing or suppressing spasticity in chronic stroke patients. This is possibly a result of the reduction in neuromuscular spindle activation due to a decrease in muscle shortening, passive tension, and stiffness.

Foot Assessment Clinical Scales in Charcot-Marie-Tooth Patients: A Scoping Review.

Introduction: Charcot-Marie-Tooth disease (CMT) is a slow and progressive peripheral motor sensory neuropathy frequently associated with the cavo-varus foot deformity. We conducted a scoping review on the clinical scales used to assess foot deviations in CMT patients and analyzed their metric properties. Evidence Acquisition: A first search was conducted to retrieve all scales used to assess foot characteristics in CMT patients from the Medline, Web of Science, Google Scholar, Cochrane, and PEDro databases. A second search was conducted to include all studies that evaluated the metric properties of such identified scales from the same databases. We followed the methodologic guidelines specific for scoping reviews and used the PICO framework to set the eligibility criteria. Two independent investigators screened all papers. Evidence Synthesis: The first search found 724 papers. Of these, 41 were included, using six different scales: "Foot Posture Index" (FPI), "Foot Function Index", "Maryland Foot Score", "American Orthopedic Foot & Ankle Society's Hindfoot Evaluation Scale", "Foot Health Status Questionnaire", Wicart-Seringe grade. The second search produced 259 papers. Of these, 49 regarding the metric properties of these scales were included. We presented and analyzed the properties of all identified scales in terms of developmental history, clinical characteristics (domains, items, scores), metric characteristics (uni-dimensionality, inter- and intra-rater reliability, concurrent validity, responsiveness), and operational characteristics (normative values, manual availability, learning time and assessors' characteristics). Conclusions: Our results suggested the adoption of the six-item version of the FPI scale (FPI-6) for foot assessment in the CMT population, with scoring provided by Rasch Analysis. This scale has demonstrated high applicability in different cohorts after a short training period for clinicians, along with good psychometric properties. FPI-6 can help health professionals to assess foot deformity in CMT patients over the years.

Robot-assisted gait training in patients with Parkinson's disease: Implications for clinical practice. A systematic review.

BACKGROUND: Gait impairments are common disabling symptoms of Parkinson's disease (PD). Among the approaches for gait rehabilitation, interest in robotic devices has grown in recent years. However, the effectiveness compared to other interventions, the optimum amount of training, the type of device, and which patients might benefit most remains unclear. OBJECTIVE: To conduct a systematic review about the effects on gait of robot-assisted gait training (RAGT) in PD patients and to provide advice for clinical practice. METHODS: A search was performed on PubMed, Scopus, PEDro, Cochrane library, Web of science, and guideline databases, following PRISMA guidelines. We included English articles if they used a robotic system with details about the intervention, the parameters, and the outcome measures. We evaluated the level and quality of evidence. RESULTS: We included twenty papers out of 230 results: two systematic reviews, 9 randomized controlled trials, 4 uncontrolled studies, and 5 descriptive reports. Nine studies used an exoskeleton device and the remainders end-effector robots, with large variability in terms of subjects' disease-related disability. CONCLUSIONS: RAGT showed benefits on gait and no adverse events were recorded. However, it does not seem superior to other interventions, except in patients with more severe symptoms and advanced disease.

What does evidence tell us about the use of gait robotic devices in patients with multiple sclerosis? A comprehensive systematic review on functional outcomes and clinical recommendations.

INTRODUCTION: There is growing evidence on the efficacy of gait robotic rehabilitation in patients with multiple sclerosis (MS), but most of the studies have focused on gait parameters. Moreover, clear indications on the clinical use of robotics still lack. As part of the CICERONE Italian Consensus on Robotic Rehabilitation, the aim of this systematic review was to investigate the existing evidence concerning the role of lower limb robotic rehabilitation in improving functional recovery in patients with MS. EVIDENCE ACQUISITION: We searched for and systematically reviewed evidence-based studies on gait robotic rehabilitation in MS, between January 1st, 2010 and December 31st, 2020, in the following databases: Cochrane Library, PEDro, PubMed and Google Scholar. The study quality was assessed by the 16-item assessment of multiple systematic reviews 2 (AMSTAR 2) and the 10-item PEDro scale for the other research studies. EVIDENCE SYNTHESIS: After an accurate screening, only 17 papers were included in the review, and most of them (13 RCT) had a level II evidence. Most of the studies used the Lokomat as a grounded robotic device, two investigated the efficacy of end-effectors and two powered exoskeletons. Generally speaking, robotic treatment has beneficial effects on gait speed, endurance and balance with comparable outcomes to those of conventional treatments. However, in more severe patients (EDSS >6), robotics leads to better functional outcomes. Notably, after gait training with robotics (especially when coupled to virtual reality) MS patients also reach better non-motor outcomes, including spasticity, fatigue, pain, psychological well-being and quality of life. Unfortunately, no clinical indications emerge on the treatment protocols. CONCLUSIONS: The present comprehensive systematic review highlights the potential beneficial role on functional outcomes of the lower limb robotic devices in people with MS. Future studies are warranted to evaluate the role of robotics not only for walking and balance outcomes, but also for other gait-training-related benefits, to identify appropriate outcome measures related to a specific subgroup of MS subjects' disease severity.

Robotic-assisted gait rehabilitation following stroke: a systematic review of current guidelines and practical clinical recommendations.

INTRODUCTION: Stroke is the third leading cause of adult disability worldwide, and lower extremity motor impairment is one of the major determinants of long-term disability. Although robotic therapy is becoming more and more utilized in research protocols for lower limb stroke rehabilitation, the gap between research evidence and its use in clinical practice is still significant. The aim of this study was to determine the scope, quality, and consistency of guidelines for robotic lower limb rehabilitation after stroke, in order to provide clinical recommendations. EVIDENCE ACQUISITION: We systematically reviewed stroke rehabilitation guideline recommendations between January 1, 2010 and October 31, 2020. We explored electronic databases (N.=4), guideline repositories and professional rehabilitation networks (N.=12). Two independent reviewers used the Appraisal of Guidelines for Research and Evaluation (AGREE) II instrument, and brief syntheses were used to evaluate and compare the different recommendations, considering only the most recent version. EVIDENCE SYNTHESIS: From the 1219 papers screened, ten eligible guidelines were identified from seven different regions/countries. Four of the included guidelines focused on stroke management, the other six on stroke rehabilitation. Robotic rehabilitation is generally recommended to improve lower limb motor function, including gait and strength. Unfortunately, there is still no consensus about the timing, frequency, training session duration and the exact characteristics of subjects who could benefit from robotics. CONCLUSIONS: Our systematic review shows that the introduction of robotic rehabilitation in standard treatment protocols seems to be the future of stroke rehabilitation. However, robot assisted gait training (RAGT) for stroke needs to be improved with new solutions and in clinical practice guidelines, especially in terms of applicability.

Indices of Loading and Propulsive Ability in the Gait of Patients With Chronic Stroke With Equinus Foot Deviation: A Correlation Study.

In literature, indices of overall walking ability that are based on ground reaction forces have been proposed because of their ease of administration with patients. In this study, we analyzed the correlation between the indices of dynamic loading and propulsion ability of 40 chronic hemiparetic post-stroke patients with equinus foot deviation and a set of clinical assessments of ankle joint deviations and walking ability. Ankle passive and active range of motion (ROM) and triceps surae spasticity were considered, along with walking speed and three complementary scales of walking ability focusing respectively on the need for assistance on functional mobility, including balance and transfers, and the limitation in social participation. The correlation between the ground reaction force-based indices and both clinical and functional variables was carried out using the non-parametric Spearman correlation coefficient. Both indices were correlated to 8 of the 10 investigated variables, thus supporting their use. In particular, the dynamic propulsive ability was correlated with all functional scales (rho = 0.5, p < 0.01), and has the advantage of being a continuous variable. Among clinical assessments, limited ankle ROM affected walking ability the most, while spasticity did not. Since the acquisition of ground reaction forces does not require any patient prepping, the derived indices can be used during the rehabilitation period to quickly detect small improvements that, over time, might lead to the broad changes detectable by clinical scales, as well as to immediately highlight the lack of these improvements, thus suggesting adjustments to the ongoing rehabilitation approach.

A Survey on the Use and Barriers of Surface Electromyography in Neurorehabilitation.

Historical, educational, and technical barriers have been reported to limit the use of surface electromyography (sEMG) in clinical neurorehabilitation settings. In an attempt to identify, review, rank, and interpret potential factors that may play a role in this scenario, we gathered information on (1) current use of sEMG and its clinical potential; (2) professional figures primarily dealing with sEMG; (3) educational aspects, and (4) possible barriers and reasons for its apparently limited use in neurorehabilitation. To this aim, an online 30-question survey was sent to 52 experts on sEMG from diverse standpoints, backgrounds, and countries. Participants were asked to respond to each question on a 5-point Likert scale or by ranking items. A cut-off of 75% agreement was chosen as the consensus threshold. Thirty-five invitees (67%) completed the electronic survey. Consensus was reached for 77% of the proposed questions encompassing current trends in sEMG use in neurorehabilitation, educational, technical, and methodological features as well as its translational utility for clinicians and patients. Data evidenced the clinical utility of sEMG for patient assessment, to define the intervention plan, and to complement/optimize other methods used to quantify muscle and physical function. The aggregate opinion of the interviewed experts confirmed that sEMG is more frequently employed in technical/methodological than clinical research. Moreover, the slow dissemination of research findings and the lack of education on sEMG seem to prevent prompt transfer into practice. The findings of the present survey may contribute to the ongoing debate on the appropriateness and value of sEMG for neurorehabilitation professionals and its potential translation into clinical settings.

Long-term effects on body functions, activity and participation of hemiplegic patients in equino varus foot deformity surgical correction followed by immediate rehabilitation. A prospective observational study.

Background: Functional surgery is an effective approach in the treatment of the rigid equinovarus foot deformity (EVFD). This must be associated with early rehabilitation treatments (ERTs) to prevent muscle rearrangements due to immobilization. Objectives: To assess the effects of EVFD surgical correction in adult stroke patients, when assessed according to the ICF domains. Methods: Variables from 24 adult chronic stroke survivors with EVFD surgical correction followed by ERT, age 55 ± 13 years, affected side 12L/12R, time from lesion 5 ± 4 years were analyzed. Body function domain: pain (NPRS), walking speed, clinical global impression of change (cGIC). Activity domain: Rivermead Mobility Index (RMI), FAC, and 6 min walking test (6MWT). Participation domain: Walking Handicap Scale (WHS). Patients were assessed before (T0), one (T1), three (T2) and twelve (T3) months after surgery by a single assessor. Results: All variables but the 6MWT significantly improved (Wilcoxon test, p < .05) at T1 or T2 and this remained until the 12-months mark. Since T1, all patients reached and maintained a supervised independent walking (FAC≥3) and all those wearing an AFO stopped using it. The median cGCI was "much improved" at T1, with a "further minimal improvement" at T3. This was not associated with the improvement measured by both FAC, and WHS (Chi-square test, p = .20 and p = .36, respectively). Conclusions: Functional surgery combined with ERT is effective in improving the patients' condition according to all ICF domains. Both subjective and objective assessments have to be used when assessing these patients.

Safety and long-term effects on gait of hemiplegic patients in equinovarus foot deformity surgical correction followed by immediate rehabilitation: a prospective observational study.

BACKGROUND: Equinovarus foot deformity (EVFD) is the most common lower limb deformity in stroke patients. Immobilization following EVFD surgical correction is known to have a negative impact on muscle rearrangement with possible loss of walking ability in stroke patients. In a previous study, safe and positive effects at one-month follow-up after surgery were obtained with an early rehabilitation treatment (ERT) characterized by immediate walking and training. AIM: To determine long-term safety and efficacy of functional surgery followed by early rehabilitation (FSER). DESIGN: A 12 months prospective observational study. SETTING: Outpatients clinic, Gait and Motion Laboratory, Sol et Salus Hospital, Rimini, Italy. POPULATION: Twenty-four adult chronic stroke survivors with EVFD surgical correction followed by ERT, age 55±13 years, affected side 12L/12R, time from lesion 5±4 years. METHODS: Patients received clinical and instrumental evaluation by gait analysis (GA) before (T0), one, three and twelve months after surgery. Safety was defined as the absence of any complication consequent to FSER. Efficacy was assessed by the recovery in ankle kinematics, walking speed and space-time parameters. RESULTS: No clinical complication (thrombosis, surgical wound infection, muscle or tendon injury, muscle hematoma) arose in the sample during the follow-up year. Variables relating to ankle kinematics improved towards their normal values at one month after surgery. These were maintained at 3 and 12 months, with a significant difference between follow-ups and pre-surgical values (Durbin-Conover Test, P<0.01). Gait speed, cadence, anterior step length and stride length of the affected side showed a statistical improvement at 3 and 12 months (Wilcoxon test, P=0.012 and P=0.001, respectively). Stride width decreased at 1 month after surgery and showed a further stable reduction at 3 months (P=0.008). CONCLUSIONS: The ERT protocol with immediate rehabilitation starting on the first day after surgical correction was safe and effective in providing a long-term correction of EVFD. Ankle dorsiflexion improved both in stance and swing, allowing for a significative improvement in walking speed. CLINICAL REHABILITATION IMPACT: FSER can be considered an encouraging approach in the management of EVFD, with durable results.

Movement Velocity and Fluidity Improve after Armeo®Spring Rehabilitation in Children Affected by Acquired and Congenital Brain Diseases: An Observational Study.

BACKGROUND: Children with cerebral palsy (CP) and acquired brain injury (ABI) often exhibit upper limb impairment, with repercussions in their daily activities. Robotic rehabilitation may promote their functional recovery, but evidence of its effectiveness is often based on qualitative functional scales. The primary aim of the present work was to assess movement precision, velocity, and smoothness using numerical indices from the endpoint trajectory of Armeo®Spring. Secondly, an investigation of the effectiveness of robotic rehabilitation in CP and ABI children was performed. METHODS: Upper limb functional changes were evaluated in children with CP (N=21) or ABI (N=22) treated with Armeo®Spring (20 45-minute sessions over 4 weeks) using clinical scales and numerical indices computed from the exoskeleton trajectory. RESULTS: Functional scales (i.e., QUEST and Melbourne) were sensitive to changes produced by the treatment for the whole study group and for the two etiology-based subgroups (improvements above Minimal Clinically Importance Difference). Significant improvement was also observed in terms of velocity, fluidity, and precision of the movement through the numerical indices of kinematic performance. Differences in the temporal evolution of the motor outcome were highlighted between the ABI and CP subgroups, pointing toward adopting different rehabilitative protocols in these two populations. CONCLUSIONS: Robot-assisted upper limb rehabilitation seems to be a promising tool to promote and assess rehabilitation in children affected by acquired and congenital brain diseases.

Electromyographic activity of the vastus intermedius muscle in patients with stiff-knee gait after stroke. A retrospective observational study.

Stiff-knee gait (SKG) in hemiplegic patients is often due to an inappropriate activity of the quadriceps femoris. However, there are no studies in literature addressing the vastus intermedius (VI) involvement in SKG. In this study, VI activity was analyzed in a sample of 46 chronic stroke patients with SKG, during spontaneous gait. VI activity was recorded by fine-wire electrodes inserted under ultrasound guidance then confirmed by electrical stimulation. The measured VI activity was compared to the normal reference pattern reported in literature and classified (e.g. premature, prolonged). The occurrences of abnormal activations during each sub-phase of the gait cycle were assessed. VI activity presented an abnormal timing in 96% of the sample. The most common pathological pattern (in 46% of the sample) was the combination of premature and prolonged VI activation. Nearly 20% of patients presented a continuous activity. A pathological activation in patients was found for 91% in mid stance, for more than 50% in terminal stance and pre-swing and for 37% and 70% in initial- and mid-swing. Results indicate that abnormal VI activity is frequent in patients with SKG. Hence, VI activity should be included in the assessment of SKG to assist in the clinical decision-making processes.

Age explains limited hip extension recovery at one year from total hip arthroplasty.

BACKGROUND: To investigate the dependency of the one-year recovery in gait after total hip arthroplasty on age and preoperative conditions. METHODS: Longitudinal retrospective study on 20 elderly patients with unilateral total hip arthroplasty consequent to hip osteoarthritis, assessed by gait analysis before surgery (T0), 2weeks (T1), 6 (T2) and 12months (T3) post-surgery. A set of variables assessing primary gait deviations and compensatory mechanisms were extracted from gait analysis data. Their variations throughout the one-year period were analyzed through a repeated measures ANOVA. Their dependency on preoperative conditions (age, hip passive limitations and Thomas Test) at one year after surgery were assessed through a correlation analysis and an ANCOVA. FINDINGS: Hip sagittal range significantly increased (P<0.05) after each measurement session from mean 21 (SD 10) degrees at T0, to 31 (6) at T1, to 34 (6) at T2 until 36 (4) degrees at T3. The peak of hip and ankle power generation significantly increased from T0 to T3, with a progressive reduction of compensatory mechanisms towards normal values. At T3, preoperative hip passive extension and Thomas Test score did not affect hip sagittal range during gait, while age did (P<0.05, R2=0.36). Ankle and hip peak powers were also correlated with age (P=0.033 and P=0.008, respectively). In our sample, age was the main cause of hip sagittal joint range limitation. INTERPRETATION: At one year from total hip arthroplasty, age affects hip joint limitations and gait recovery more than preoperative passive restrictions due to muscle shortening.

Instrumental indices for upper limb function assessment in stroke patients: a validation study.

BACKGROUND: Robotic exoskeletons are increasingly being used in objective and quantitative assessment of upper limb (UL) movements. A set of instrumental indices computed during robot-assisted reaching tasks with the Armeo®Spring has been proven to assess UL functionality. The aim of this study was to test the construct validity of this indices-based UL assessment when used with patients who have had a stroke. METHODS: Forty-four 45- to 79-year-old stroke patients with a Wolf Motor Function Test ability score (WMFT-FAS) ranging from 10 to 75 and a Motricity Index (MI) ranging from 14 to 33 at shoulder and elbow were enrolled, thus covering a wide range of impairments. Residual UL function was assessed by both the WMFT-FAS and the WMFT-TIME, as well as by a set of 9 numerical indices assessing movement accuracy, velocity and smoothness computed from a 3D endpoint trajectory obtained during the "Vertical Capture" task of the Armeo®Spring device. To explore which variables better represented motor control deficits, the Mann-Whitney U Test was used to compare patients' indices to those obtained from 25 healthy individuals. To explore the inner relationships between indices and construct validity in assessing accuracy, velocity and smoothness, a factor analysis was carried out. To verify the indices concurrent validity, they were compared to both WMFT-FAS and WMFT-TIME by the Spearman's correlation coefficient. RESULTS: Seven indices of stroke subjects were significantly different from those of healthy controls, with effect sizes in the range 0.35-0.74. Factor analysis confirmed that specific subsets of indices belonged to the domains of accuracy, velocity and smoothness (discriminant validity). One accuracy index, both velocity indices and two smoothness indices were significantly correlated with WMFT-FAS and WMFT-TIME (|rho| = 0.31-0.50) (concurrent validity). One index for each of the assessed movement domains was proven to have construct validity (discriminant and concurrent) and was selected. Moreover, the indices were able to detect differences in accuracy, velocity and/or smoothness in patients with the same WMFT level. CONCLUSIONS: The proposed index-based UL assessment can be used to integrate and support clinical evaluation of UL function in stroke patients.