Linda Resnik

Advanced Upper Limb Prosthetic Devices: Implications for Upper Limb Prosthetic Rehabilitation

The number of catastrophic injuries caused by improvised explosive devices in the Afghanistan and Iraq Wars has increased public, legislative, and research attention to upper limb amputation. The Department of Veterans Affairs (VA) has partnered with the Defense Advanced Research Projects Agency and DEKA Integrated Solutions to optimize the function of an advanced prosthetic arm system that will enable greater independence and function. In this special communication, we examine current practices in prosthetic rehabilitation including trends in adoption and use of prosthetic devices, financial considerations, and the role of rehabilitation team members in light of our experiences with a prototype advanced upper limb prosthesis during a VA study to optimize the device. We discuss key challenges in the adoption of advanced prosthetic technology and make recommendations for service provision and use of advanced upper limb prosthetics. Rates of prosthetic rejection are high among upper limb amputees. However, these rates may be reduced with sufficient training by a highly specialized, multidisciplinary team of clinicians, and a focus on patient education and empowerment throughout the rehabilitation process. There are significant challenges emerging that are unique to implementing the use of advanced upper limb prosthetic technology, and a lack of evidence to establish clinical guidelines regarding prosthetic prescription and treatment. Finally, we make recommendations for future research to aid in the identification of best practices and development of policy decisions regarding insurance coverage of prosthetic rehabilitation.

Measuring participation as defined by the international classification of functioning, disability and health: an evaluation of existing measures.

OBJECTIVES The content and theoretic underpinning of measures designed to assess participation, disability, and handicap vary widely, and few authors have attempted to compare the content of existing measures. The objectives of this study were to use the International Classification of Functioning, Disability and Health (ICF) taxonomy to (1) evaluate the participation content of measures and (2) identify the most comprehensive measures. DESIGN We searched PubMed, Cumulated Index of Nursing and Allied Health Literature, and Health and Psychosocial Instruments databases to identify appropriate measures. Content analysis was conducted by classifying participation-related items of each measure into 1 or more of the 9 activities and participation chapters of the ICF taxonomy. SETTING Not applicable. PARTICIPANTS We evaluated 40 generic and condition-specific self-report measures that met study inclusion criteria. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES The most comprehensive measures were identified and coded by using second- and third-level ICF codes. RESULTS Five measures containing participation items linked to all 9 chapters were the Community Living Skills Scale, the Assessment of Life Habits, Mayo-Portland Adaptability Inventory, the participation measure for postacute care, and the Psychosocial Adjustment to Illness Scale. The breadth and coverage of these 5 measures were compared. CONCLUSIONS We identified 5 measures that had items that were linkable to all 9 chapters of activities and participation; however, these measures differed in specifics of coverage and the approach to assessing participation. These findings can be used by clinicians and researchers to select the most comprehensive participation outcome measure for their populations.

The DEKA Arm: Its features, functionality, and evolution during the Veterans Affairs Study to optimize the DEKA Arm

Background and aim: DEKA Integrated Solutions Corp. (DEKA) was charged by the Defense Advanced Research Project Agency to design a prosthetic arm system that would be a dramatic improvement compared with the existing state of the art. The purpose of this article is to describe the two DEKA Arm prototypes (Gen 2 and Gen 3) used in the Veterans Affairs Study to optimize the DEKA Arm. Technique: This article reports on the features and functionality of the Gen 2 and Gen 3 prototypes discussing weight, cosmesis, grips, powered movements Endpoint, prosthetic controls, prosthetist interface, power sources, user notifications, troubleshooting, and specialized socket features; pointing out changes made during the optimization efforts. Discussion: The DEKA Arm is available in three configurations: radial configuration, humeral configuration, and shoulder configuration. All configurations have six preprogrammed grip patterns and four wrist movements. The humeral configuration has four powered elbow movements. The shoulder configuration uses Endpoint Control to perform simultaneous multi-joint movements. Three versions of foot controls were used as inputs. The Gen 3 incorporated major design changes, including a compound wrist that combined radial deviation with wrist flexion and ulnar deviation with wrist extension, an internal battery for the humeral configuration and shoulder configuration, and embedded wrist display. Clinical relevance The DEKA Arm is an advanced upper limb prosthesis, not yet available for commercial use. It has functionality that surpasses currently available technology. This manuscript describes the features and functionality of two prototypes of the DEKA Arm, the Gen 2 and the Gen 3.

Obesity in Nursing Homes: An Escalating Problem

Objectives: To estimate trends in the prevalence of obesity in nursing homes, to characterize the obese nursing home population, and to evaluate the extent to which estimates of the prevalence of obesity varied by facility and geographic location. Design: Cross-sectional. Setting: One thousand six hundred twenty-five nursing homes in Kansas, Maine, Mississippi, New York, and South Dakota from 1992 to 2002; 16,110 nursing homes in the United States in 2002. Participants: Newly admitted residents between 1992 and 2002 (n=847,601) in selected states and 1,448,046 residents newly admitted to a U.S. nursing home in 2002 with height and weight documented on the Minimum Data Set (MDS) assessment. Measurements: Data were from the Systematic Assessment of Geriatric Drug Use via Epidemiology database. Residents were classified as having a body mass index of less than 18.5 kg/m2, 18.5 to 24.9 kg/m2, 25.0 to 29.9 kg/m2, 30 to 34.9 kg/m2, or 35.0 kg/m2 or greater. Results: Adjusting for sociodemographics, in Kansas, Maine, Mississippi, New York, and South Dakota, fewer than 15% of newly admitted residents were obese in 1992, rising to more than 25% in 2002. In U.S. nursing homes, the distribution of obese residents is not shared equally across facilities. Nearly 30% of residents with a BMI of 35 kg/m2 or greater are younger than 65, and a disproportionate percentage of obese residents are non-Hispanic black. Residents identified as obese had a higher likelihood of comorbid conditions (e.g., diabetes mellitus, arthritis, hypertension, depression, and allergies). Conclusion: Increasing prevalence of obesity in nursing homes and substantial variation of obesity prevalence within facilities raise concerns about nursing home preparedness and access.Objectives: To estimate trends in the prevalence of obesity in nursing homes, to characterize the obese nursing home population, and to evaluate the extent to which estimates of the prevalence of obesity varied by facility and geographic location.

Exploring physical activity behaviour of persons with multiple sclerosis: a qualitative pilot study

Purpose. Identify facilitators and barriers to physical activity (PA), and explore the utility of Social Cognitive Theory (SCT) and Transactional Model of Stress and Coping (TMSC) in understanding PA behaviour among persons with multiple sclerosis (MS). Methods. Thirteen participants from a clinical trial were interviewed and classified as physically active, sometimes active or inactive based on the Health-Promoting Lifestyle Profile-II. Interviews were analysed using analytical induction, which consisted of coding data into pre-established categories and then exploring similarities and differences between groups. Pre-established coding categories were constructs from SCT (i.e. environment, expectations, self-efficacy and self-regulation) and TMSC (i.e. stress appraisal and coping style). Results. Inactive and active participants differed in their self-regulation skills, self-efficacy and coping styles. Common barriers to PA included symptoms and the physical and social environment. Facilitators of PA included strong self-regulation skills, confidence to overcome symptoms to engage in PA (i.e. barrier self-efficacy) and positive coping styles. Conclusion. Results from this pilot study suggest that PA interventions will need to implement multiple strategies that target self-efficacy, social environment and coping styles. We found SCT and TMSC useful in understanding PA behaviour among persons with MS; however, a limitation to these theories is that they are not explicit in the relationship between health and cognitions. Future research will need to explore how to incorporate models of health and function into existing behaviour change theories.

Using International Classification of Functioning, Disability and Health to understand challenges in community reintegration of injured veterans

This pilot study used the framework of the World Health Organizations International Classification of Functioning, Disability and Health (ICF) to understand the challenges faced by Operation Enduring Freedom (OEF) and Operation Iraqi Freedom (OIF) veterans as they reintegrate into the community. We conducted semistructured interviews with 14 injured veterans, 12 caregivers, and 14 clinicians. We used ICF taxonomy to code data and identify issues. We identified challenges in the following ICF domains: learning and applying knowledge; general tasks and demands; communication; mobility; self-care; domestic life; interpersonal interactions, major life areas; and community, social, and civic life. We found many similarities between the challenges faced by veterans with and without polytraumatic injuries, although veterans with polytraumatic injuries faced challenges of greater magnitude. Identifying community reintegration challenges early and promoting reintegration are important mandates for the Department of Veterans Affairs. The findings of this study are useful in understanding the needs of OEF/OIF veterans.

Development of CRIS: Measure of Community Reintegration of Injured Service Members

Identification and prevention of community reintegration problems of veterans is an important public health mandate. However, no veteran-specific measure exists. Study purposes were to (1) develop the Community Reintegration for Service Members (CRIS) measure and (2) test the validity and reliability of the measure. Formative research identified challenges in community reintegration postdeployment. The World Health Organizations International Classification of Functioning, Disability and Health participation domain guided item-bank development. Items were refined through cognitive interviews and clinician consultation. Pilot studies with 126 veterans examined unidimensionality, internal consistency, reliability, and construct validity. Three unidimensional CRIS scales were developed. Working subjects had better CRIS scores then unemployed subjects. Subjects with posttraumatic stress disorder, substance abuse, or mental health problems had worse scores than subjects without these conditions. The correlations between the CRIS and the 36-Item Short Form Health Survey scales of role physical, role emotional, and social functioning were 0.44-0.80. CRIS has strong reliability, conceptual integrity, and construct validity.

Predictors of Physical Therapy Clinic Performance in the Treatment of Patients With Low Back Pain Syndromes

Background and Purpose: Little is known about organizational and service delivery factors related to quality of care in physical therapy. This study sought to identify characteristics related to differences in practice outcomes and service utilization. Subjects: The sample comprised 114 outpatient clinics and 1,058 therapists who treated 16,281 patients with low back pain syndromes during the period 2000–2001. Clinics participated with the Focus on Therapeutic Outcomes, Inc (FOTO) database. Methods: Hierarchical linear models were used to risk adjust treatment outcomes and number of visits per treatment episode. Aggregated residual scores from these models were used to classify each clinic into 1 of 3 categories in each of 3 types of performance groups: (1) effectiveness, (2) utilization, and (3) overall performance (ie, composite measure of effectiveness and utilization). Relationships between clinic classification and the following independent variables were examined by multinomial logistic regression: years of therapist experience, number of physical therapists, ratio of physical therapists to physical therapist assistants, proportion of patients with low back pain syndromes, number of new patients per physical therapist per month, utilization of physical therapist assistants, and setting. Results: Clinics that were lower utilizers of physical therapist assistants were 6.6 times more likely to be classified into the high effectiveness group compared with the low effectiveness group, 6.7 times more likely to be classified in the low utilization group compared with the high utilization group, and 12.4 times more likely to be classified in the best performance group compared with the worst performance group. Serving a higher proportion of patients with low back pain syndromes was associated with an increased likelihood of being classified in the lowest or middle group. Years of physical therapist experience was inversely associated with being classified in the middle utilization group compared with the highest utilization group. Discussion and Conclusion: These findings suggest that, in the treatment of patients with low back pain syndromes, clinics that are low utilizers of physical therapist assistants are more likely to provide superior care (ie, better patient outcomes and lower service use).

Outcomes measurement for patients with low back pain.

Outcomes tracking provides a systematic method of monitoring treatment effectiveness and efficiency. A familiarity with outcome measures for the patient with low back pain is very important for clinicians working in orthopaedic settings, where patients with lumbar pain are prevalent. The clinician must be able to evaluate and choose appropriate measurement tools, and understand the clinical meaning of measurements to successfully employ these instruments. The purposes of this article are to review measurement instruments and to offer practical guidelines for selection and use of outcome measures for this population. The reliability, validity, sensitivity to change, and utility of common outcome measures are discussed. An overview of generic, disease-specific, and patient-specific tools is provided, with specific commentary on the use of the SF-36, SF-12, Oswestry, Roland Morris, and patient-specific tools. Practical guidelines for utilizing outcome measures in clinical practice and the overall benefits of outcomes tracking are highlighted.

Development and evaluation of the activities measure for upper limb amputees.

OBJECTIVES (1) To develop a measure of activities for adults with upper limb amputation: the Activities Measure for Upper Limb Amputees (AM-ULA); and (2) to conduct initial psychometric evaluation of the measure. DESIGN This was a cohort study where the prototype measure was administered twice within 1 week. Tests were videotaped and graded by 2 independent raters. Interrater reliability, test-retest reliability, internal consistency, and minimal detectable change were estimated. Known group validity was examined using analyses of variance comparing scores of transradial, transhumeral, and shoulder level amputees. Convergent validity was examined by correlating AM-ULA scores with dexterity tests and self-reported function. SETTING Hospital outpatient. PARTICIPANTS Subjects (N=52) with upper limb amputation. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES Not applicable. RESULTS Intraclass correlation coefficients (ICCs) for test-retest reliability were .88 to .91. ICCs for interrater reliability were .84 to .89. Cronbach alphas were .89 to .91. The minimal detectable change at the 90% confidence interval was 3.7 points. Subjects with more distal levels of limb loss had better scores than those with more proximal levels (P<.01). The AM-ULA was moderately correlated with most dexterity tests and self-reported function. CONCLUSIONS The AM-ULA is a new measure of activity performance for adults with upper limb amputation that considers task completion, speed, movement quality, skillfulness of prosthetic use, and independence in its rating system. It has good interrater reliability, test-retest reliability, and demonstrated known group validity.