A Systematic Review of the Management of Orthostatic Hypotension After Spinal Cord Injury

Krassioukov A, Eng JJ, Warburton DE, Teasell R, Spinal Cord Injury Rehabilitation Evidence Research Team. A systematic review of the management of orthostatic hypotension after spinal cord injury.

Objective

To review systematically the evidence for the management of orthostatic hypotension (OH) in patients with spinal cord injuries (SCIs).

Data Sources

A key word literature search was conducted of original and review articles as well as practice guidelines using Medline, CINAHL, EMBASE, and PsycInfo, and manual searches of retrieved articles from 1950 to July 2008, to identify literature evaluating the effectiveness of currently used treatments for OH.

Study Selection

Included randomized controlled trials (RCTs), prospective cohort studies, case-control studies, pre-post studies, and case reports that assessed pharmacologic and nonpharmacologic intervention for the management of OH in patients with SCI.

Data Extraction

Two independent reviewers evaluated the quality of each study, using the Physiotherapy Evidence Database score for RCTs and the Downs and Black scale for all other studies. Study results were tabulated and levels of evidence assigned.

Data Synthesis

A total of 8 pharmacologic and 21 nonpharmacologic studies were identified that met the criteria. Of these 26 studies (some include both pharmacologic and nonpharmacologic interventions), only 1 pharmacologic RCT was identified (low-quality RCT producing level 2 evidence), in which midodrine was found to be effective in the management of OH after SCI. Functional electrical stimulation was one of the only nonpharmacologic interventions with some evidence (level 2) to support its utility.

Conclusions

Although a wide array of physical and pharmacologic measures are recommended for the management of OH in the general population, very few have been evaluated for use in SCI. Further research needs to quantify the efficacy of treatment for OH in subjects with SCI, especially of the many other pharmacologic interventions that have been shown to be effective in non-SCI conditions.     

The supine hip extensor manual muscle test: a reliability and validity study

Perry J, Weiss WB, Burnfield JM, Gronley JK. The supine hip extensor manual muscle test: a reliability and validity study. Arch Phys Med Rehabil 2004;85:1345-50.

Objectives

To define the relative hip extensor muscle strengths values identified by the 4 grades obtained with a supine manual muscle test (MMT) and to compare these values with those indicated by the traditional prone test.

Design

Comparison of 4 manual supine strength grades with isometric hip extension joint torque; κ statistic-determined interrater reliability, and analyses of variance identified between grade differences in torque.

Setting

Pathokinesiology laboratory.

Participants

Adult volunteers recruited from local community and outpatient clinics. Reliability testing: 16 adults with postpolio (31 limbs). Validity testing (2 groups): 18 subjects without pathology (18 limbs), and 26 people with clinical signs of hip extensor weakness (51 limbs).

Interventions

Not applicable.

Main Outcome Measures

Supine hip extensor manual muscle grade and isometric hip extension torque.

Results

Reliability testing showed excellent agreement (82%). Subjects with pathology had significant differences in mean torque (P<.01) for the assigned grade 5 (176Nm), grade 4 (103Nm), grade 3 (67Nm), and grade 2 (19Nm). Healthy adults showed significant differences between grade 5 (212Nm) and grade 4 (120Nm) in mean torque (P<.05).

Conclusions

The supine MMT is a reliable and valid method with which to assess hip extension strength.     

Can four key psychosocial risk factors for chronic pain and disability (Yellow Flags) be modified by a pain management programme?: A pilot study

Objectives

To identify the extent to which an adapted pain management programme is successful in modifying pain beliefs, psychological distress, locus of control and self-efficacy using both qualitative and quantitative approaches.

Design

Prospective, observational study with questionnaires at baseline and following completion of a pain management programme.

Setting

Outpatient pain management programme in a district general hospital.

Participants

Fifteen participants experiencing chronic pain, referred from pain and rheumatology clinics within the hospital.

Outcome measures

Pain beliefs, self-efficacy, locus of control and psychological distress.

Results

Wilcoxon signed ranks tests demonstrated significant improvements in pain beliefs, self-efficacy and psychological distress. However, changes in locus of control were not found to be significant. The qualitative data supported these findings.

Conclusions

The pilot study suggested that the pain management programme successfully modified three out of four of the psychosocial risk factors (Yellow Flags) in a population with established pain and disability. A larger scale project replicating this pilot study including a comparison group, and further research to assess the extent to which modifying Yellow Flags generalises to affect quality of life and disability, are underway.     

Effect of a gravity-compensating orthosis on reaching after stroke: evaluation of the Therapy Assistant WREX

Iwamuro BT, Cruz EG, Connelly LL, Fischer HC, Kamper DG. Effect of a gravity-compensating orthosis on reaching after stroke: evaluation of the Therapy Assistant WREX.

Objective

To evaluate the effectiveness of an upper-extremity orthosis to improve the reaching workspace of stroke survivors.

Design

Within-subjects repeated-measures design evaluating reaching with and without the Therapy Assistant Wilmington Robotic Exoskeleton (WREX).

Setting

Laboratory.

Participants

Stroke survivors (N=10) with chronic upper-extremity hemiparesis.

Interventions

Not applicable.

Main Outcome Measures

Arm movement kinematics (Optotrak Certus motion detection system), muscle activity for biceps, triceps, anterior deltoid, and brachioradialis muscles (bipolar surface electromyography).

Results

Significant improvements of reaching distance occurred for all subjects across all targets (P<.001) when using the Therapy Assistant WREX. While the self-selected peak speed of hand movement during the reach decreased significantly with the Therapy Assistant WREX (P<.001), use of the Therapy Assistant WREX led to improved quality of movement as signified by a decrease in jerk (P<.001) and a shift in the timing of the peak speed to an earlier point in the movement (P<.001). Electromyographic muscle activity analysis showed that use of the Therapy Assistant WREX led to a reduction in biceps activity across all targets during the reach (P<.05), in conjunction with a marginally significant reduction in activity of the anterior deltoid (P<.055). No changes were observed in triceps (P=.47) or brachioradialis activity (P=.28).

Conclusions

By reducing requirements for shoulder activation, the Therapy Assistant WREX improved reaching performance among stroke survivors compared with free reaching, thereby potentially facilitating practice of functional tasks.     

Effects of concurrent strength and endurance training on physical fitness and symptoms in postmenopausal women with fibromyalgia: a randomized controlled trial

Valkeinen H, Alén M, Häkkinen A, Hannonen P, Kukkonen-Harjula K, Häkkinen K. Effects of concurrent strength and endurance training on physical fitness and symptoms in postmenopausal women with fibromyalgia: a randomized controlled trial.

Objective

To examine the effectiveness of concurrent strength and endurance training on muscle strength, aerobic and functional performance, and symptoms in postmenopausal women with fibromyalgia (FM).

Design

Randomized controlled trial.

Setting

Local gym and university research laboratory.

Participants

Twenty-six women with FM.

Intervention

Progressive and supervised 21-week concurrent strength and endurance training.

Main Outcome Measures

Muscle strength of leg extensors, upper extremities, and trunk; peak oxygen uptake (Vo₂peak), maximal workload (Wmax), and work time; 10-m walking and 10-step stair-climbing time and self-reported functional capacity (Health Assessment Questionnaire); and symptoms of FM.

Results

After concurrent strength and endurance training, the groups differed significantly in Wmax (P=.001), work time (P=.001), concentric leg extension force (P=.043), walking (P=.001) and stair-climbing (P<.001) time, and fatigue (P=.038). The training led to an increase of 10% (P=.004) in Wmax and 13% (P=.004) in work time on the bicycle but no change in Vo₂peak.

Conclusions

Concurrent strength and endurance training in low to moderate volume improves the muscle strength of leg extensors, Wmax, work time, and functional performance as well as perceived symptoms, fatigue in particular. Concurrent strength and endurance training is beneficial to postmenopausal women with FM without adversities, but more extensive studies are needed to confirm the results.     

Use of the Continuous Scale Physical Functional Performance Test in Stroke Survivors

Manns PJ, Tomczak CR, Jelani A, Cress ME, Haennel R. Use of the continuous scale physical functional performance test in stroke survivors.

Objective

To (1) determine the feasibility of the continuous scale physical functional performance 10-item test (CS-PFP10) for the measurement of physical function in stroke survivors, (2) characterize physical functional performance of stroke survivors and their matched controls, and (3) explore the associations among physical functional performance, ambulatory activity, and peak oxygen uptake (Vo₂peak).

Design

Case control.

Setting

University research setting.

Participants

Ten participants with stroke and 10 healthy controls matched for age, sex, and physical activity.

Interventions

Not applicable.

Main Outcome Measures

The CS-PFP10 test was used to measure functional ability. The test requires performance of 10 serial tasks that range from low to high difficulty. The step activity monitor was used to measure absolute ambulatory activity and was reported as the average number of steps a day over a 4-day period. Vo₂peak was determined using a metabolic cart and a recumbent cycle ergometer.

Results

Stroke survivors scored lower than healthy controls on all individual tasks, domains, and the total score on the CS-PFP10. Higher Vo₂peak was associated with higher total scores on the CS-PFP10 in both stroke survivors and controls. In stroke survivors, lower levels of impairment (as indicated by the Chedoke-McMaster stroke assessment) were associated with higher total CS-PFP10 scores.

Conclusions

The CS-PFP10 is a measure of physical performance that is feasible to use with ambulatory participants with stroke. Future investigations with people with stroke should explore the ability of the CS-PFP10 to provide meaningful information about change in CS-PFP10 subscales with interventions that target items on the subscales, such as balance or upper extremity strength.     

Gait Analysis for Evaluating the Relationship Between Increased Signal Intensity on T2-Weighted Magnetic Resonance Imaging and Gait Function in Cervical Spondylotic Myelopathy

Kim CR, Yoo JY, Lee SH, Lee DH, Rhim SC. Gait analysis for evaluating the relationship between increased signal intensity on T2-weighted magnetic resonance imaging and gait function in cervical spondylotic myelopathy.

Objective

To determine relationships between increased signal intensity (ISI) on T2-weighted cervical spine magnetic resonance imaging (MRI) and parameters of gait analysis in patients with cervical spondylotic myelopathy (CSM).

Design

Retrospective comparative study.

Setting

Gait analysis laboratory.

Participants

Patients (N=36) who undertook cervical laminectomy or laminoplasty because of CSM.

Interventions

Not applicable.

Main Outcome Measures

Subjects were evaluated by using the modified Japanese Orthopaedic Association (JOA) scale, the Nurick scale, cervical spine MRI, and gait analysis. Two radiologists classified patients into 3 groups: intense, faint, and no ISI.

Results

Relative to patients without ISI, those with ISI showed significantly slower gait speed, longer step time, decreased single-limb support time, increased double-limb support time, and limited range of motion of knee and ankle (P<.05). Increased intensity tended to correlate with poor gait function including slower gait speed, longer step time, decreased single-limb support time, and increased double-limb support time. The modified JOA and Nurick scale did not correlate with ISI.

Conclusions

In patients with CSM who received surgical treatment, more intense ISI on T2-weighted MRI correlated preoperatively with increased difficulties in gait function. Gait analysis may be a useful tool for evaluating gait functions in cervical myelopathy.     

The impact of type of manual medication cart filling method on the frequency of medication administration errors: a prospective before and after study

Background

The medication cart can be filled using an automated system or a manual method and when using a manual method the medication can be arranged either by round time or by medication name. For the manual methods, it is hypothesized that the latter method would result in a lower frequency of medication administration errors because nurses are forced to read the medication labels, but evidence for this hypothesis is lacking.

Objectives

The aim of this study was to compare the frequency of medication administration errors of two different manual medication cart filling methods, namely arranging medication by round time or by medication name.

Design

A prospective, observational study with a before-after design.

Participants and settings

Eighty-six patients who stayed on an orthopaedic ward in one university medical centre in the Netherlands were included.

Methods

Disguised observation was used to detect medication administration errors. The medication cart filling method in usual care was to fill the cart with medication arranged by round time. The intervention was the implementation of the second medication cart filling method, where the medication cart was filled by arranging medicines by their names. The primary outcome was the frequency of medication administrations with one or more error(s) after the intervention compared with before the intervention. The secondary outcome was the frequency of subtypes of medication administration errors.

Results

After the intervention 170 of 740 (23.0%) medication administrations with one or more medication administration error(s) were observed compared to 114 of 589 (19.4%) before the intervention (odds ratio 1.24 [95% confidence interval 0.95-1.62]). The distribution of subtypes of medication administration errors before and after the intervention was statistically significantly different (p < 0.001). Analysis of subtypes revealed more omissions and wrong time errors after the intervention than before the intervention. Unauthorized medication errors were detected more frequently before the intervention than after the intervention.

Conclusion

The frequency of medication administration errors with the medication cart filling method where the medication is arranged by name was not statistically significantly different compared to the medication cart filling method where the medication is arranged by round time.     

A comparison between self-reported and observed activity limitations in adults with neuromuscular disorders

Vandervelde L, Dispa D, Van den Bergh PY, Thonnard J-L. A comparison between self-reported and observed activity limitations in adults with neuromuscular disorders.

Objective

To investigate the agreement between the self-reported and examiner-reported difficulties of patients with neuromuscular disorders (NMDs) in performing daily activities at home.

Design

A comparison between 2 methods of administering a measurement instrument.

Setting

Neuromuscular reference center in a university hospital.

Participants

Adult patients (N=57) with diagnosed NMDs living at home.

Interventions

Not applicable.

Main Outcome Measure

The ACTIVLIM questionnaire.

Results

The intraclass correlation coefficient, model 2,1 (ICC_2,1), between the measures was very good (ICC_2,1=.87), indicating a good agreement between self-perceived and observed measures.

Conclusions

The use of ACTIVLIM as a self-reporting questionnaire is a valid method for assessing activity limitations in patients with NMD.     

Ability of People With Stroke to Learn Powered Wheelchair Skills: A Pilot Study

Mountain AD, Kirby RL, Eskes GA, Smith C, Duncan H, MacLeod DA, Thompson K. Ability of people with stroke to learn powered wheelchair skills: a pilot study.

Objectives

Our primary objective was to test the hypothesis that people with stroke can learn to use powered wheelchairs safely and effectively. Our secondary objective was to explore the influence of visuospatial neglect on the ability to learn powered wheelchair skills.

Design

Prospective, uncontrolled pilot study using within-participant comparisons.

Setting

Rehabilitation center.

Participants

Inpatients (N=10; 6 with visuospatial neglect), all with a primary diagnosis of stroke.

Interventions

Participants received 5 wheelchair skills training sessions of up to 30 minutes each using the Wheelchair Skills Training Program (version 3.2).

Main Outcome Measures

Powered wheelchair skills were tested before and after training using the Wheelchair Skills Test, Power Mobility version 3.2 (WST-P).

Results

The group's total mean WST-P scores improved from 25.5% of skills passed at baseline to 71.5% posttraining (P=.002). The participants with neglect improved their WST-P scores to the same extent as the participants without neglect, although their pretraining and posttraining scores were lower. The training and testing sessions were well tolerated by the participants, and there were no serious adverse events.

Conclusions

Many people with stroke, with or without visuospatial neglect, can learn to use powered wheelchairs safely and effectively with appropriate training.     

Energy expenditure and activity of transfemoral amputees using mechanical and microprocessor-controlled prosthetic knees

Kaufman KR, Levine JA, Brey RH, McCrady SK, Padgett DJ, Joyner MJ. Energy expenditure and activity of transfemoral amputees using mechanical and microprocessor-controlled prosthetic knees.

Objective

To quantify the energy efficiency of locomotion and free-living physical activity energy expenditure of transfemoral amputees using a mechanical and microprocessor-controlled prosthetic knee.

Design

Repeated-measures design to evaluate comparative functional outcomes.

Setting

Exercise physiology laboratory and community free-living environment.

Participants

Subjects (N=15; 12 men, 3 women; age, 42±9y; range, 26-57y) with transfemoral amputation.

Intervention

Research participants were long-term users of a mechanical prosthesis (20±10y as an amputee; range, 3-36y). They were fitted with a microprocessor-controlled knee prosthesis and allowed to acclimate (mean time, 18±8wk) before being retested.

Main Outcome Measures

Objective measurements of energy efficiency and total daily energy expenditure were obtained. The Prosthetic Evaluation Questionnaire was used to gather subjective feedback from the participants.

Results

Subjects demonstrated significantly increased physical activity-related energy expenditure levels in the participant's free-living environment (P=.04) after wearing the microprocessor-controlled prosthetic knee joint. There was no significant difference in the energy efficiency of walking (P=.34). When using the microprocessor-controlled knee, the subjects expressed increased satisfaction in their daily lives (P=.02).

Conclusions

People ambulating with a microprocessor-controlled knee significantly increased their physical activity during daily life, outside the laboratory setting, and expressed an increased quality of life.     

Ultrasonographic Median Nerve Changes After a Wheelchair Sporting Event

Impink BG, Boninger ML, Walker H, Collinger JL, Niyonkuru C. Ultrasonographic median nerve changes after a wheelchair sporting event.

Objectives

To investigate the acute median nerve response to intense wheelchair propulsion by using ultrasonography and to examine the relationship between carpal tunnel syndrome (CTS) signs and symptoms and the acute median nerve response.

Design

Case series.

Setting

Research room at the National Veterans Wheelchair Games.

Participants

Manual wheelchair users (N=28) competing in wheelchair basketball.

Intervention

Ultrasound images collected before and after a wheelchair basketball game.

Main Outcome Measures

Median nerve cross-sectional area, flattening ratio, and swelling ratio and changes in these after activity. Comparison of median nerve characteristics and patient characteristics between participants with and without positive physical examination findings and with and without symptoms of CTS.

Results

Significant changes in median nerve ultrasound characteristics were noted after activity. The group as a whole showed a significant decrease in cross-sectional area at the radius of 4.05% (P=.023). Participants with positive physical examinations showed significantly different (P=.029) and opposite changes in swelling ratio compared with the normal group. Subjects with CTS symptoms had a significantly (P=.022) greater duration of wheelchair use (17.1y) compared with the asymptomatic participants (9y).

Conclusions

Manual wheelchair propulsion induces acute changes in median nerve characteristics that can be visualized by using ultrasound. Studying the acute median nerve response may be useful for optimizing various interventions, such as wheelchair set up or propulsion training, to decrease both acute and chronic median nerve damage and the likelihood of developing CTS.     

Early mobilisation for patients following acute myocardiac infarction: A systematic review and meta-analysis of experimental studies

Objective

To determine the impact of early mobilisation (EM) on total mortality and non-fatal re-infarction after acute myocardial infarction (AMI).

Design

Systematic review and meta-analysis.

Data sources

MEDLINE, CINAHL, HealthStar, EMBASE, the Cochrane Library Controlled Trials Registry and experts.

Methods

Target studies included published and unpublished experimental, controlled studies in any language comparing AMI patients allocated to any in-hospital early mobilisation or a control/standard treatment. Two reviewers independently assessed study eligibility and quality and performed data extraction. We calculated relative risks (RRs) and 95% confidence intervals (CIs) using the random-effects model.

Outcomes

All-cause mortality or re-infarction up to 1-year post-AMI.

Results

Out of 385 potentially relevant studies, 14 met our eligibility criteria (13 published before 1983). There were 149 deaths (9.3% of 1607) and 82 non-fatal re-infarctions (5.2% of 1580) among post-AMI patients receiving EM, compared with 179 deaths (11.6% of 1541) and 80 non-fatal re-infarctions (5.3% of 1518) among AMI patients receiving control treatment (RR = 0.85, 95% CI 0.68, 1.05 and RR = 1.02, 95% CI 0.75, 1.39 respectively).

Conclusion

Our meta-analysis demonstrated a trend towards decreased mortality with EM after AMI. However, there is uncertainty about early mobilisation and more research should be developed having into account all kind of differences among patients receiving treatment after AMI worldwide.     

Effects of an exercise program on respiratory function, posture and on quality of life in osteoporotic women: a pilot study

Objectives

To investigate the effects of an exercise program on respiratory function, thoracic kyphosis, tolerance to exercise and quality of life in women with osteoporosis.

Design

Pilot observational study.

Setting

Department of Physiotherapy, Federal University of Sao Carlos, Brazil.

Participants

Fourteen women with densitometric diagnosis of osteoporosis in the spine.

Interventions

An exercise program comprising of three sessions per week, lasting 1 hour each, over an 8-week period. Each session incorporated: 5 minutes of stretching exercises, including the lower limb and upper limb muscles; 15 minutes of posture exercises; 20 minutes of walking; 15 minutes of exercises to improve the strength of respiratory muscles and a 5-minutes, cool-down and relaxation.

Main outcome measures

Respiratory function evaluation, submaximal exercise tolerance test measurement of the thoracic kyphosis angle, and the Osteoporosis Assessment Questionnaire (OPAQ) to measure the quality of life at baseline and at 8-week follow-up.

Results

At follow-up, increases of between 12% and 23% in respiratory pressures were noted. The results also suggest an increase of 13% in submaximal exercise tolerance and a small increase of approximately 5% in the magnitude of thoracic curvature. The value of the OPAQ for this group of subjects is questionable. Sample size calculations based on the results of this pilot study are provided.

Conclusions

After an 8-week exercise program, benefits to the fitness of the participants were observed. The results suggest that exercise may have a role in the management of this group of patients. The outcome measures, with the possible exception of the OPAQ, and the protocol used in this pilot study would be feasible for a definitive study. Further research is recommended in a sufficiently powered study and should include an appropriate control group.     

Determinants of Skin Problems of the Stump in Lower-Limb Amputees

Meulenbelt HE, Geertzen JH, Jonkman MF, Dijkstra PU. Determinants of skin problems of the stump in lower-limb amputees.

Objective

To identify determinants of skin problems in lower-limb amputees.

Design

Survey, using a questionnaire.

Setting

Not applicable.

Participants

Lower-limb amputees (N=2039) who either obtained their prosthesis through the Orthopedische Instrument Makerij (a group of orthopedic workshops in the Netherlands) or were a member of the (Dutch) National Society of Amputees (Landelijke Vereniging van Geamputeerden) were invited to participate. In total, 872 lower-limb amputees agreed to participate.

Intervention

Amputees filled in the questionnaire to assess characteristics of the amputation and prosthesis, level of activity, stump and prosthesis hygiene, and skin problems. Stepwise backward logistic regression was performed to analyze determinants of skin problems.

Main Outcome Measure

Skin problems in the month prior to completing the questionnaire.

Results

A total of 816 questionnaires were received. Eventually 805 questionnaires were suitable for statistical analysis. Protective determinants were (in order of magnitude of association) older age, male sex, and amputation because of peripheral arterial disease and/or diabetes. Provocative determinants were (in order of magnitude of association) use of antibacterial soap, smoking, and washing the stump 4 times a week or more often. In total, 63% of the participants (95% confidence interval, 60%-67%) reported 1 or more skin problems.

Conclusions

The provocative determinants identified in this study—use of antibacterial soap, smoking, and stump washing frequency—have to be studied for their clinical relevance.     

The cost and benefits of employment: a qualitative study of experiences of persons with multiple sclerosis

Johnson KL, Yorkston KM, Klasner ER, Kuehn CM, Johnson E, Amtmann D. The cost and benefits of employment: a qualitative study of experiences of persons with multiple sclerosis. Arch Phys Med Rehabil 2004;85:201-9.

Objective

To attain a better understanding of the benefits and barriers faced by persons with multiple sclerosis (MS) in the workplace.

Design

Qualitative research methodology comprising a series of semistructured interviews.

Setting

Community-based setting.

Participants

Fourteen women and 2 men with MS living in the community who were employed or recently employed at the time of interviews.

Interventions

Not applicable.

Main outcome measure

Accounts of personal experiences related to employment.

Results

Four themes emerged: the cost-benefit economy of working; fatigue and cognitive changes; stress in the workplace; and accommodations made to address barriers. Although participants valued work highly, they were also aware of the cost of being employed. The consequences of unemployment or changing jobs were considered negative and appeared stressful. For persons with MS, employment had both costs and significant benefits. Accommodations in the workplace and modifications of roles and responsibilities at home made it possible for individuals to continue working.

Conclusions

Health care providers must consider the complexity and timing of decisions by people with MS to continue or leave employment before recommending either action. Identifying critical periods of intervention to stabilize this cost-benefit balance is a critical next step for understanding issues of employment and MS.     

Patient-centredness in physiotherapy from the perspective of the chronic low back pain patient

Objective

To define patient-centredness from the patient's perspective in the context of physiotherapy for chronic low back pain (CLBP).

Design

Qualitative study using semi-structured interviews to explore perceptions of various aspects of physiotherapy management of CLBP.

Setting

Physiotherapy departments in one geographical area of the UK National Health Service.

Participants

Twenty-five individuals who had received physiotherapy for CLBP within the previous 6 months.

Results

Six key themes emerged as the dimensions that the participants perceived to be important for patient-centred physiotherapy: communication; individual care; decision-making; information; the physiotherapist; and organisation of care. Communication was the most important dimension, underpinning the five other dimensions as well as being a distinct dimension of patient-centred physiotherapy.

Conclusions

Physiotherapists should have an understanding of the six dimensions of patient-centred physiotherapy for CLBP. Improving physiotherapists’ communication skills may better facilitate patient-centred physiotherapy, and therefore enhance the experience of physiotherapy for this client group.     

Cervical erector spinae and upper trapezius muscle activity in children using different information technologies

Objectives

Researchers investigating the effects of computer use and the development of musculoskeletal disorders have mainly focused on the effects of prolonged muscle loading associated with postures assumed during computer use in the adult population. The objective of this study was to investigate the effects of different forms of old and new information technology (IT) on muscle activity levels in a paediatric population.

Design

A 3 × 3 × 2 mixed model design was used for this study.

Participants

Thirty-two schoolchildren aged 4-17 years participated in this study.

Outcome measures

Surface electromyography (EMG) data were collected from the left and right cervical erector spinae and upper trapezius muscles. Participants performed a 5-minutes reading task using the three IT types (book, laptop and desktop computer).

Results

Cervical erector spinae and upper trapezius muscle activity levels were significantly higher when children used the laptop set-up (P < 0.001). The lowest muscle activity levels were found when children used the desktop set-up. Cervical erector spinae and upper trapezius muscle activities were found to be higher on the left side in the book set-up compared with higher right muscle activity levels in the computer set-ups (P = 0.047 and <0.001, respectively).

Conclusions

The three IT types had different effects on cervical erector spinae and upper trapezius muscle activity, suggesting varying risks associated with different IT types. Activity levels were often above 5% maximum EMG (MEMG). As adult studies have linked activity levels greater than 5%MEMG with the development of musculoskeletal disorders, it seems that children are potentially at risk of replicating these adverse health reactions associated with adult IT use.     

Minimal Detectable Change in Quadriceps Strength and Voluntary Muscle Activation in Patients With Knee Osteoarthritis

Kean CO, Birmingham TB, Garland SJ, Bryant DM, Giffin JR. Minimal detectable change in quadriceps strength and voluntary muscle activation in patients with knee osteoarthritis.

Objective

To examine the test-retest reliability and quantify the minimal detectable change (MDC) in quadriceps strength and voluntary activation in patients with knee osteoarthritis (OA).

Design

Repeated measures over a 1-week interval.

Setting

Tertiary care center.

Participants

A convenience sample of patients (N=20) diagnosed with knee OA.

Intervention

Isokinetic and isometric quadriceps strength testing and voluntary quadriceps activation testing using interpolated twitch technique.

Main Outcome Measures

Peak isokinetic and isometric knee extension torque (Nm) and percentage of voluntary quadriceps activation (%).

Results

The mean differences with 95% confidence intervals between the 2 test sessions for quadriceps isokinetic strength, isometric strength, and percent of voluntary activation were −4.34Nm (−14.01 to 5.34Nm), 1.56Nm (−5.56 to 8.68Nm), and 1.34% (−.53 to 3.22%), respectively. The intraclass correlation coefficients for all measures ranged from .93 to .98. The standard errors of measurement (SEMs) for quadriceps isokinetic and isometric strength were 14.57Nm and 10.76Nm, respectively. The SEM for percentage of voluntary activation was 2.84%. Based on these values, the MDCs were 33.90Nm, 25.02Nm, and 6.60% for quadriceps isokinetic strength, isometric strength, and percentage of voluntary activation, respectively.

Conclusions

Maximal quadriceps isokinetic strength, isometric strength, and percentage of voluntary activation measures demonstrate excellent test-retest reliability in patients with knee OA. In addition to research applications, the present findings suggest these measures are appropriate for use when evaluating change in neuromuscular function of the quadriceps in individual patients.     

The impact of organisational and individual factors on team communication in surgery: A qualitative study

Background

Effective teamwork and communication is a crucial determinant of patient safety in the operating room. Communication failures are often underpinned by the inherent differences in professional practices across disciplines, and the ways in which they collaborate. Despite the overwhelming international support to improve team communication, progress has been slow.

Objective

The aim of this paper is to extend understanding of the organisational and individual factors that influence teamwork in surgery.

Design

This qualitative study used a grounded theory approach to generate a theoretical model to explain the relations between organisational and individual factors that influence interdisciplinary communication in surgery.

Setting and participants

A purposive sample of 16 participants including surgeons, anaesthetists, and nurses who worked in an operating room of a large metropolitan hospital in south east Queensland, Australia, were selected.

Methods

Participants were interviewed during 2008 using semi-structured individual and group interviews. All interviews were recorded and transcribed. Using a combination of inductive and deductive approaches, thematic analyses uncovered individual experiences in association with teamwork in surgery.

Results

Analysis generated three themes that identified and described causal patterns of interdisciplinary teamwork practices; interdisciplinary diversity in teams contributes to complex interpersonal relations, the pervasive influence of the organisation on team cohesion, and, education is the panacea to improving team communications.

Conclusions

The development of shared mental models has the potential to improve teamwork in surgery, and thus enhance patient safety. This insight presents a critical first step towards the development teambuilding interventions in the operating room that would specifically address communication practices in surgery.