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The British Association of Prosthetists and Orthotists (BAPO) was established to encourage high standards of prosthetic and orthotic practice. It is committed to Continued Professional Development and education to enhance standards of prosthetic and orthotic care. BAPO is the only UK body that represents the interests of prosthetic and orthotic professionals and associate members to their employers, BAPO enjoys the support of a high majority of the profession as members.
Tuesday 22 April 2014
The effect of AFO stiffness on the knee joint during the heel strike phase of gait in stroke patients
Madeline Singer, Toshiki Kobayahi, Lucas Lincoln, Michael Orendurff and K. Bo Foreman
Stroke patients suffering from foot drop are often prescribed ankle-foot orthoses (AFOs) to improve foot clearance during gait. However, excessive restriction of plantarflexion (PF) during the heel strike phase of gait has been shown to cause biomechanical changes at the knee joint. This pilot study aimed to determine how increasing the PF stiffness of an AFO affects knee joint kinematics and kinetics during heel strike in hemiplegic stroke patients with varying levels of active ankle range of motion. We hypothesized that increased PF resistance would cause an increase in anterior tibial rotation at heel strike with resulting increases in knee flexion angle and knee extension moment. To test this hypothesis, 5 stroke patients with foot drop were clinically evaluated, instrumented with reflective markers, and fitted with a spring modified AFO (Orthocare Innovations). A compression spring in the posterior aspect of the AFO was changed to increase the external dorsiflexion torque from 0.3 Nm/deg (Spring 1) to 2.0 Nm/deg (Spring 2). Kinematic and kinetic data were collected during walking on an instrumented treadmill (Bertec) in a motion analysis lab. Five steps with each spring were examined. Two patients exhibited an increase in knee flexion angle and knee extension moment with the stiffer spring. Clinical findings revealed that these 2 patients had minimal active PF while the other 3 patients had full active PF. From these initial results, we cautiously conclude that stroke patients with decreased active PF cannot overcome excessive PF resistance during the heel strike phase of gait, and as a result exhibit compensation strategies at the knee joint. These results will be used to create a more objective method for the prescription of AFOs in hopes to improve the long-term quality of life for stroke patients.
Tuesday 15 April 2014
Foot orthoses for adults with flexible pes planus: a systematic review
Helen A Banwell, Shylie Mackintosh and Dominic Thewlis
Abstract
Background: Foot orthoses are widely used in the management of flexible pes planus, yet the evidence to support this intervention has not been clearly defined. This systematic review aimed to critically appraise the evidence for
the use of foot orthoses for flexible pes planus in adults.
Methods: Electronic databases (Medline, CINAHL, Cochrane, Web of science, SportDiscus, Embase) were systematically searched in June 2013 for randomised controlled, controlled clinical and repeated measure trials
where participants had identified flexible pes planus using a validated and reliable measure of pes planus and the intervention was a rigid or semi-rigid orthoses with the comparison being a no-orthoses (shoes alone or flat
non-posted insert) condition. Outcomes of interest were foot pain, rearfoot kinematics, foot kinetics and physical function.
Results: Of the 2,211 articles identified by the searches, 13 studies met the inclusion criteria; two were randomised controlled trials, one was a controlled trial and 10 were repeated measure studies. Across the included studies, 59
relevant outcome measures were reported with 17 calculated as statistically significant large or medium effects observed with use of foot orthoses compared to the no orthoses condition (SMD range 1.13 to −4.11).
Conclusions: No high level evidence supported the use of foot orthoses for flexible pes planus. There is good to moderate level evidence that foot orthoses improve physical function (medial-lateral sway in standing (level II) and
energy cost during walking (level III)). There is low level evidence (level IV) that foot orthoses improve pain, reduce rearfoot eversion, alter loading and impact forces; and reduce rearfoot inversion and eversion moments in flexible
pes planus. Well-designed randomised controlled trials that include appropriate sample sizes, clinical cohorts and involve a measure of symptom change are required to determine the efficacy of foot orthoses to manage adult
flexible pes planus.
Friday 11 April 2014
Three simple clinical tests to accurately predict falls in people with Parkinson's disease
Serene S. Paul BAppSc(Phty)(Hons), Colleen G. Canning PhD1, Catherine Sherrington PhD, Stephen R. Lord PhD, DSc3, Jacqueline C. T. Close MD, Victor S. C. Fung PhD, FRACP
ABSTRACT
Falls are a major cause of morbidity in Parkinson's disease (PD). The objective of this study was to identify predictors of falls in PD and develop a simple prediction tool that would be useful in routine patient care. Potential predictor variables (falls history, disease severity, cognition, leg muscle strength, balance, mobility, freezing of gait [FOG], and fear of falling) were collected for 205 community-dwelling people with PD. Falls were monitored prospectively for 6 months using monthly falls diaries. In total, 125 participants (59%) fell during follow-up. A model that included a history of falls, FOG, impaired postural sway, gait speed, sit-to-stand, standing balance with narrow base of support, and coordinated stability had high discrimination in identifying fallers (area under the receiver-operating characteristic curve [AUC], 0.83; 95% confidence interval [CI], 0.77–0.88). A clinical tool that incorporated 3 predictors easily determined in a clinical setting (falling in the previous year: odds ratio [OR], 5.80; 95% CI, 3.00–11.22; FOG in the past month: OR, 2.39; 95% CI, 1.19–4.80; and self-selected gait speed < 1.1 meters per second: OR, 1.86; 95% CI, 0.96–3.58) had similar discrimination (AUC, 0.80; 95% CI, 0.73–0.86) to the more complex model (P = 0.14 for comparison of AUCs). The absolute probability of falling in the next 6 months for people with low, medium, and high risk using the simple, 3-test tool was 17%, 51%, and 85%, respectively. In people who have PD without significant cognitive impairment, falls can be predicted with a high degree of accuracy using a simple, 3-test clinical tool. This tool enables individualized quantification of the risk of falling.
Wednesday 9 April 2014
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