41 research outputs found

    Introductory Chapter: Technology and Orthotics and Prosthetics

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    Role of Gait Training in Recovery of Standing and Walking in Subjects with Spinal Cord Injury

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    Gait training has an important role in rehabilitation of standing and walking in spinal cord injury (SCI) patients. There were different types of gait training in these subjects. Both the body weight support treadmill training and robotic-assisted and robotic exoskeleton are effective and secure methods for gait training and improving the energy demand and metabolic cost in SCI patients in different level of injury. The powered exoskeletons can provide patients with SCI the ability to walk with the lowest energy consumption. The powered exoskeleton’s energy consumption and speed of walking depend on the training duration. Based on different types of gait training methods, training time, and other affected parameters, the aim of this chapter was to evaluate the role of gait training in recovery of standing and walking in SCI patients

    Efficacy of Corrective Surgery for Gait and Energy Expenditure in Patients with Scoliosis: A Literature Review

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    The aim of this literature review was to evaluate selected original papers that measured gait parameters and energy expenditure in idiopathic scoliosis (IS) treated with surgical intervention. IS is a progressive growth disease that affects spinal anatomy, mobility, and left–right trunk symmetry. Consequently, IS can modify human gait. Spinal fusions remain the primary approach to correcting scoliosis deformities, thereby halting progression. Using the population intervention comparison outcome measure framework and selected keywords, 15 studies that met the inclusion criteria were selected. Alteration of spatial and temporal variables in patients with IS was contradictory among the selected studies. Ankle and foot kinematics did not change after surgery; however, pelvic and hip frontal motions increased and pelvic rotation decreased following surgery. Patients with IS continued to show excessive energy expenditure following surgery in the absence of a physical rehabilitation protocol. Spinal surgery may be considered for gait improvement and IS treatment. There were inadequate data regarding the effect of corrective surgery on the kinetics, energy expenditure, and muscle activity parameters

    Orthoses for Spinal Cord Injury Patients

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    There are some limitations for patients with spinal cord injury (SCI) when walking with assistive devices. Heavy energy expenditure and walking high loads on the upper limb joints are two main reasons of high rejection rate of orthosis by these patients . Many devices have been designed to enable people with paraplegia to ambulate in an upright position as a solution of these limitations such as mechanical orthoses, hybrid orthoses and powered orthoses. All these devices are designed to solve the problem of standing and walking, but there are some other important notes, which should be considered. For example, the size and weight of external orthoses, donning and doffing, cumbersomeness and independency for using are very important

    The Effect of Soft and Rigid Cervical Collars on Head and Neck Immobilization in Healthy Subjects

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    Study DesignWhiplash injury is a prevalent and often destructive injury of the cervical column, which can lead to serious neck pain. Many approaches have been suggested for the treatment of whiplash injury, including anti-inflammatory drugs, manipulation, supervised exercise, and cervical collars. Cervical collars are generally divided into two groups: soft and rigid collars.PurposeThe present study aimed to compare the effect of soft and rigid cervical collars on immobilizing head and neck motion.Overview of LiteratureMany studies have investigated the effect of collars on neck motion. Rigid collars have been shown to provide more immobilization in the sagittal and transverse planes compared with soft collars. However, according to some studies, soft and rigid collars provide the same range of motion in the frontal plane.MethodsTwenty-nine healthy subjects aged 18–26 participated in this study. Data were collected using a three-dimensional motion analysis system and six infrared cameras. Eight markers, weighing 4.4 g and thickened 2 cm2 were used to record kinematic data. According to the normality of the data, a paired t-test was used for statistical analyses. The level of significance was set at α=0.01.ResultsAll motion significantly decreased when subjects used soft collars (p<0.01). According to the obtained data, flexion and lateral rotation experienced the maximum (39%) and minimum (11%) immobilization in all six motions using soft collars. Rigid collars caused maximum immobilization in flexion (59%) and minimum immobilization in the lateral rotation (18%) and limited all motion much more than the soft collar.ConclusionsThis study showed that different cervical collars have different effects on neck motion. Rigid and soft cervical collars used in the present study limited the neck motion in both directions. Rigid collars contributed to significantly more immobilization in all directions

    The physiological cost index of walking with a powered knee ankle foot orthosis in subjects with poliomyelitis : A pilot study

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    Background: A powered knee ankle foot orthosis (KAFO) was developed to provide restriction of knee flexion during stance phase and active flexion and extension of the knee during swing phase of gait. Objectives: The purpose of this study was to determine its effect on the physiological cost index (PCI), walking speed and the distance walked in people with poliomyelitis compared to when walking with a KAFO with drop lock knee joints. Methods: Seven subjects with poliomyelitis volunteered for the study, and undertook gait analysis with both types of KAFO. Results: Walking with the powered KAFO significantly reduced walking speed (p=0.015) and the distance walked (p=0.004), and also it did not improve PCI values (p =0.009) compared to walking with the locked KAFO. Conclusion: Using a powered KAFO did not significantly improve any of the primary outcome measures during walking for poliomyelitis subjects

    Evaluation of gait symmetry in poliomyelitis subjects : Comparison of a conventional knee ankle foot orthosis (KAFO) and a new powered KAFO.

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    Background: Compared to able-bodied subjects, subjects with post polio syndrome and poliomyelitis demonstrate a preference for weight-bearing on the non-paretic limb, causing gait asymmetry. Objectives: The purpose of this study was to evaluate the gait symmetry of the poliomyelitis subjects when ambulating with either a drop- locked knee ankle foot orthosis (KAFO) or a newly developed powered KAFO. Methods: Seven subjects with poliomyelitis who routinely wore conventional KAFOs participated in this study, and received training to enable them to ambulate with the powered KAFO on level ground, prior to gait analysis. Results: There were no significant differences in the gait symmetry index (SI) of step length (P=0.085), stance time (P=0.082), double limb support time (P=0.929) or speed of walking (p=0.325) between the two test conditions. However, using the new powered KAFO improved the SI in step width (P=0.037), swing time (P=0.014), stance phase percentage (P=0.008) and knee flexion during swing phase (p≤0.001) compared to wearing the dropped locked KAFO. Conclusion: The use of a powered KAFO for ambulation by poliomyelitis subjects affects gait symmetry in the base of support, swing time, stance phase percentage and knee flexion during swing phase

    Comparison of the efficacy of a neutral wrist splint and wrist splint with lumbrical unit for the treatment of patients with carpal tunnel syndrome

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    Purpose: The purpose of this study was to compare the effect of a neutral wrist splint or a wrist splint with an additional metacarpophalangeal (MCP) unit on pain, function, grip and pinch strength in patients with mild-to-moderate carpal tunnel syndrome (CTS). Methods: Twenty four patients received conservative treatment using either the neutral wrist splint or wrist splint with the MCP unit for a period of 6 weeks. Primary outcome measures were pain, function, grip and pinch strength. Data was collected immediately before and after using the two types of splints at baseline (0 weeks) and 6 weeks. Statistical analysis was performed using the paired t-test and independent T-test. Results: Compared to baseline, both the neutral wrist splint and the wrist splint with an MCP unit significantly decreased pain, increased function and pinch and grip strength. Comparisons of the two types of splints for grip (P =0.675) and pinch strength (P =0.650) revealed that there were no significant differences between the two after 6 weeks of wear. However, there were significant differences in pain levels (P =0.022) and the DASH score (P =0.027) between the two types of splints from baseline to 6 weeks. Conclusion: The wrist splint with an MCP unit was more effective than the neutral wrist splint in pain reduction and improvement of function

    The Effect of a Heel to Toe Rocker Sole on Walking in Patients with Type 2 Diabetes: A Pilot Study

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    Introduction: Rocker-soled shoes are usually used to help for preventing foot problems in the diabetic population. However, different designs of rocker sole exist, there is limited knowledge regarding their effect on gait parameters in diabetic patients. Methods and Materials: Six subjects with type 2 diabetes (4 males, and 2 females) walked in a gait laboratory setting. A three-dimensional motion capture system was used to acquire gait data when walking barefoot, with un-adapted footwear, or footwear adapted with a heel-to-toe rocker sole. The gait variables were as follows: spatiotemporal parameters (walking speed, cadence, percentage of stance phase, and stride length) and sagittal range of motion of ankle, knee, and hip joints. Results: Among spatiotemporal parameters, only the stance phase percentage was significantly increased when the subjects walked with the rocker-soled footwear (12%) and un-adapted footwear (10.7%) compared with barefoot walking, but not significant difference between 2 footwear conditions. There were no significant differences between the three test conditions in hip, knee or ankle joint ranges of motion in the sagittal plane. Conclusion: This pilot study demonstrated that footwear can potentially be adapted with a rocker sole profile in diabetic patients without significantly affecting hip, knee and ankle sagittal plane kinematics

    The Effect of Modified Floor Reaction Ankle Foot Orthoses on Walking Abilities in Children with Cerebral Palsy

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    Objectives: This study was designed to evaluate the effectiveness of a modified floor reaction ankle foot orthosis (FRAFO) design on gait performance in children with cerebral palsy. Methods: Eight children with cerebral palsy wore a modified FRAFO bilaterally for six weeks. Motion analysis was used to assess the immediate effectiveness of the orthosis on improving gait and also following six weeks of gradual orthosis use. Primary outcome measures were walking speed, cadence and stride length, plus hip, knee and ankle joint ranges of motion. A paired T test was used to compare primary outcome measures. Results: Cadence, stride length and walking speed were all significantly increased when the children wore the modified FRAFO (P=<0.001 for speed and stride length and P=0.005 for cadence). The children demonstrated a statistically significant reduction in ankle ROM when using the modified FRAFO. The mean knee joint ROM was increased from 36.5&plusmn;13.32 degrees when walking with an orthosis at baseline to 43.5&plusmn;1.19 degrees when walking with an orthosis after six weeks of use. Children with the modified FRAFO also had decreased hip flexion angle at initial contact and an extension shift during stance phase following 6 weeks of orthosis use compared to when initially donning it. Discussion: Children with cerebral palsy can benefit from an improvement in gait parameters when walking with a modified FRAFO
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