Shoe-stiffening inserts for first metatarsophalangeal joint osteoarthritis: a randomised trial.

OBJECTIVE: To evaluate the efficacy of carbon-fibre shoe-stiffening inserts in individuals with first metatarsophalangeal joint osteoarthritis. DESIGN: This was a randomised, sham-controlled, participant- and assessor-blinded trial. One hundred participants with first metatarsophalangeal joint osteoarthritis received rehabilitation therapy and were randomised to receive either carbon fibre shoe-stiffening inserts (n = 49) or sham inserts (n = 51). The primary outcome measure was the Foot Health Status Questionnaire (FHSQ) pain domain assessed at 12 weeks. RESULTS: All 100 randomised participants (mean age 57.5 (SD 10.3) years; 55 (55%) women) were included in the analysis of the primary outcome. At the 12 week primary endpoint, there were 13 drop-outs (7 in the sham insert group and 6 in the shoe-stiffening insert group), giving completion rates of 86 and 88%, respectively. Both groups demonstrated improvements in the FHSQ pain domain score at each follow-up period, and there was a significant between-group difference in favour of the shoe-stiffening insert group (adjusted mean difference of 6.66 points, 95% CI 0.65 to 12.67, P = 0.030). There were no between-group differences for the secondary outcomes, although global improvement was more common in the shoe-stiffening insert group compared to the sham insert group (61 vs 34%, RR 1.73, 95% CI 1.05 to 2.88, P = 0.033; number needed to treat 4, 95% CI 2 to 16). CONCLUSION: Carbon-fibre shoe-stiffening inserts were more effective at reducing foot pain than sham inserts at 12 weeks. These results support the use of shoe-stiffening inserts for the management of this condition, although due to the uncertainty around the effect on the primary outcome, some individuals may not experience a clinically worthwhile improvement.

Effectiveness of interventions to increase physical activity in individuals with intellectual disabilities: a systematic review of randomised controlled trials.

BACKGROUND: People with intellectual disabilities (ID) often do not meet recommended guidelines for physical activity. The aim of this study was to systematically review available evidence that evaluated the effectiveness of interventions to increase physical activity in individuals with ID. METHOD: Five electronic databases (MEDLINE, CINAHL, EMBASE, SPORTDiscus and Cochrane Central Register of Controlled Trials) were searched from inception of the database to July 2017 to identify randomised controlled trials that evaluated the effectiveness of interventions to improve physical activity among people with ID. Trials were included if they measured at least one objective measure of physical activity. Quality appraisal was completed by two independent reviewers using the Cochrane Risk of Bias Tool. The magnitude of treatment effect was estimated for each intervention by calculating the standardised mean difference (SMD) and associated 95% confidence interval. RESULTS: Nine randomised controlled trials (976 participants, 501 women, age range 9 months to 83 years) were included. Four trials evaluated unimodal interventions and five trials evaluated multimodal health promotion programmes based on using supportive environments to enable sustained behavioural changes in physical activity. None of the trials were rated as low risk of bias as all had at least one item on the Cochrane Risk of Bias Tool that was considered to be high risk. No trials were able to implement participant blinding. Three trials found statistically significant beneficial effects of interventions for increasing physical activity. Results showed that a 10-week progressive resistance training programme led to maintenance of physical activity levels at 24 weeks in adolescents with Down syndrome (SMD 0.78, 95% CI 0.17 to 1.40). Additionally, a 12- to 16-month multicomponent diet and physical activity programme produced improvement in physical activity at programme completion in adults with ID (reported effect size of 0.29). Finally, an 8-month physical activity and fitness programme increased physical activity at 8 months in adults with ID (SMD 0.91, 95% CI 0.20 to 1.60). Findings regarding other interventions were inconclusive with small effects that were not statistically significant. CONCLUSIONS: There is inconsistent evidence of the effects of interventions for improving physical activity levels in individuals with ID. A progressive resistance training programme was found to maintain physical activity levels in adolescents with Down syndrome, while a multicomponent diet and physical activity programme and a physical activity and fitness programme were found to improve physical activity levels in adults with ID. Future trials using rigorous research designs are required to confirm these findings and establish whether other interventions designed to increase physical activity in people with ID are effective.

Risk factors for lower limb injuries during initial naval training: a prospective study.

INTRODUCTION: This study aimed to identify risk factors associated with the development of common lower limb injuries during initial defence training in naval recruits who were enrolled in a randomised trial. METHODS: Three-hundred and six naval recruits were randomly allocated flat insoles (n=153) or foot orthoses (n=153) while undertaking 11 weeks of initial training. Participant characteristics (including anthropometrics, general health, physical activity, fitness and foot characteristics) were collected at the baseline assessment and injuries were documented prospectively. Injury was defined as the combined incidence of participants with medial tibial stress syndrome, patellofemoral pain, Achilles tendinopathy and plantar fasciitis/plantar heel pain throughout the 11 weeks of training. A discriminant function analysis was used to explore the ability of baseline measures to predict injury. RESULTS: Overall, 67 (21.9%) participants developed an injury. Discriminant function analysis revealed that participants who sustained an injury were slightly younger (mean 21.4±SD 4.1 vs 22.5±5.0 years) and were less likely to be allocated to the foot orthosis group (40% vs 53%) compared with those who remained uninjured. The accuracy of these baseline variables to predict injury was moderate (78.1%). CONCLUSIONS: Lower limb injury was not accurately predicted from health questionnaires, fitness results and clinical assessments in naval recruits undertaking initial defence training. However, although not reaching statistical significance, the use of foot orthoses may be protective against common lower limb injuries. TRIAL REGISTRATION NUMBER: ACTRN12615000024549; Post-results.

Foot structure and function in older people with radiographic osteoarthritis of the medial midfoot.

OBJECTIVE: To investigate whether foot structure and dynamic foot function differ between older people with and without radiographically confirmed osteoarthritis (OA) of the talo-navicular joint (TNJ) and navicular-first cuneiform joint (N1(st)CJ). METHOD: Dorso-plantar and lateral weighbearing foot radiographs (right feet) were obtained from 205 older people aged 61-94 years, and the presence of OA in the TNJ and N1(st)CJ was determined using a standardized atlas. Foot structure was assessed using a clinical measure (the arch index [AI]) and two radiographic measures (calcaneal inclination angle [CIA] and calcaneal-first metatarsal angle [C1MA]). Dynamic plantar pressure assessment during walking was undertaken using the Tekscan MatScan system. RESULTS: Thirty-five participants exhibited radiographic OA in the TNJ and N1(st)CJ. There were no significant differences between the groups in relation to age, sex, weight or walking velocity. Compared to those without OA in these joints, those with OA had significantly flatter feet, as evidenced by larger AI (0.26+/-0.05 vs 0.25+/-0.05, P=0.02), smaller CIA (18.5+/-6.3 vs 21.3+/-5.4 degrees, P<0.01) and larger C1MA (137.0+/-9.3 vs 132.4+/-8.0 degrees, P<0.01), and exhibited significantly higher maximum forces in the midfoot (15.2+/-7.3 vs 11.2+/-7.0 kg, P<0.01; 36% increase). CONCLUSION: Older people with radiographic OA of the TNJ and N1(st)CJ exhibit flatter feet and increased loading of the plantar midfoot when walking. Excessive loading of the midfoot may predispose to OA by increasing dorsal compressive forces, although prospective studies are required to confirm whether this relationship is causal.

Radiographic evaluation of foot osteoarthritis: sensitivity of radiographic variables and relationship to symptoms.

OBJECTIVES: To evaluate a radiographic atlas for grading foot osteoarthritis (OA) in relation to the relative sensitivity of different radiographic and views and features, and to examine the relationship between radiographic OA and foot symptoms. METHODS: Weightbearing dorso-plantar (DP) and lateral foot radiographs were obtained from 197 people (126 women and 71 men) aged 62-94 years (mean age 75.9, standard deviation [SD] 6.6). The prevalence of OA in five joints (the first metatarsophalangeal joint [1st MPJ], the first cuneo-metatarsal joint [1st CMJ], the second cuneo-metatarsal joint [2nd CMJ], the navicular-first cuneiform joint [N1st CJ] and the talo-navicular joint [TNJ]) was then determined using both views in combination (as recommended in the atlas), or by using either view in isolation. Associations between radiographic OA in individual foot joints and symptoms were then explored. RESULTS: Joint-specific prevalence of OA using both DP and lateral views was 1st MPJ (42.4%), 1st CMJ (22.6%), 2nd CMJ (60.2%), N1st CJ (39.1%) and TNJ (32.7%). Using only the DP view detected almost all cases of 1st MPJ OA (94.6%), however, the sensitivity was lower for the other joints (31.0-60.7%). Using only the lateral view detected almost all cases of OA (83.8 to 86.9%), with the exception of the 1st MPJ and 1st CMJ (50.9% and 60.7%, respectively). Using either osteophytes (OP) alone or joint space narrowing (JSN) alone showed low sensitivity for all joints (14.3-63.0%), with the exception of OP alone in the DP view for the 1st MPJ and JSN in the lateral view for the 2nd CMJ (83.8% and 84.0%, respectively). Radiographic OA in individual foot joints and the total number of joints affected were both moderately associated with foot symptoms. CONCLUSION: Epidemiological and clinical studies should incorporate observation of both OP and JSN from both DP and lateral views to determine the presence of OA in the foot, as the number of cases detected is reduced if only one radiographic feature or view is used. Radiographic foot OA is common in older people and is moderately associated with foot symptoms.

Interventions for the prevention and treatment of pes cavus.

BACKGROUND: People with pes cavus frequently suffer foot pain, which can lead to significant disability. Despite anecdotal reports, rigorous scientific investigation of this condition and how best to manage it is lacking. OBJECTIVES: To assess the effects of interventions for the prevention and treatment of pes cavus. SEARCH STRATEGY: We searched the Cochrane Neuromuscular Disease Group Trials Register (April 2007), MEDLINE (January 1966 to April 2007), EMBASE (January 1980 to April 2007), CINAHL (January 1982 to April 2007), AMED (January 1985 to April 2007), all EBM Reviews (January 1991 to April 2007), SPORTdiscuss (January 1830 to April 2007) and reference lists of articles. We also contacted known experts in the field to identify additional published or unpublished data. SELECTION CRITERIA: We included all randomised and quasi-randomised controlled trials of interventions for the treatment of pes cavus. We also included trials aimed at preventing or correcting the cavus foot deformity. DATA COLLECTION AND ANALYSIS: Two authors independently selected papers, assessed trial quality and extracted data. MAIN RESULTS: Only one trial (custom-made foot orthoses) fully met the inclusion criteria. Two additional cross-over trials (off-the-shelf foot orthoses and footwear) were also included. Both studies assessed secondary biomechanical outcomes less than three-months after randomisation. Data used in the three studies could not be pooled due to heterogeneity of diagnostic groups and outcome measures. The one trial that fully met the inclusion criteria investigated the treatment of cavus foot pain in 154 adults over a three month period. The trial showed a significant reduction in the level of foot pain, measured using the validated 100-point Foot Health Status Questionnaire, with custom-made foot orthoses versus sham orthoses (WMD 10.90; 95% CI 3.21 to 18.59). Furthermore, a significant improvement in foot function measured with the same questionnaire was reported with custom-made foot orthoses (WMD 11.00; 95% CI 3.35 to 18.65). There was also an increase in physical functioning of the Medical Outcomes Short Form - 36 (WMD 9.50; 95% CI 4.07 to 14.93). There was no difference in reported adverse events following the allocation of custom-made (9%) or sham foot orthoses (15%) (RR 0.61; 95% CI 0.26 to 1.48). AUTHORS' CONCLUSIONS: In one randomised controlled trial, custom-made foot orthoses were significantly more beneficial than sham orthoses for treating chronic musculoskeletal foot pain associated with pes cavus in a variety of clinical populations. There is no evidence for any other type of intervention for the treatment or prevention of foot pain in people with a cavus foot type.

Does stretching increase ankle dorsiflexion range of motion? A systematic review.

BACKGROUND: Many lower limb disorders are related to calf muscle tightness and reduced dorsiflexion of the ankle. To treat such disorders, stretches of the calf muscles are commonly prescribed to increase available dorsiflexion of the ankle joint. HYPOTHESIS: To determine the effect of static calf muscle stretching on ankle joint dorsiflexion range of motion. STUDY DESIGN: A systematic review with meta-analyses. METHODS: A systematic review of randomised trials examining static calf muscle stretches compared with no stretching. Trials were identified by searching Cinahl, Embase, Medline, SportDiscus, and Central and by recursive checking of bibliographies. Data were extracted from trial publications, and meta-analyses performed that calculated a weighted mean difference (WMD) for the continuous outcome of ankle dorsiflexion. Sensitivity analyses excluded poorer quality trials. Statistical heterogeneity was assessed using the quantity I2. RESULTS: Five trials met inclusion criteria and reported sufficient data on ankle dorsiflexion to be included in the meta-analyses. The meta-analyses showed that calf muscle stretching increases ankle dorsiflexion after stretching for < or = 15 minutes (WMD 2.07 degrees; 95% confidence interval 0.86 to 3.27), > 15-30 minutes (WMD 3.03 degrees; 95% confidence interval 0.31 to 5.75), and > 30 minutes (WMD 2.49 degrees; 95% confidence interval 0.16 to 4.82). There was a very low to moderate statistical heterogeneity between trials. The meta-analysis results for < or = 15 minutes and > 15-30 minutes of stretching were considered robust when compared with sensitivity analyses that excluded lower quality trials. CONCLUSIONS: Calf muscle stretching provides a small and statistically significant increase in ankle dorsiflexion. However, it is unclear whether the change is clinically important.

Clarifying proximal diaphyseal fifth metatarsal fractures. The acute fracture versus the stress fracture.

This article discusses the classification and treatment of proximal diaphyseal fifth metatarsal fractures. There are two types of proximal diaphyseal fracture of the fifth metatarsal: the acute proximal diaphyseal fracture and the proximal diaphyseal stress fracture. Confusion between the two types of fractures is probably due to their similar location and the historical practice of referring to all fractures in this location as Jones fractures. Both fractures are prone to delayed union and require long periods of nonweightbearing immobilization or internal fixation for healing. However, because the mechanism of injury is different for each fracture, the treatment plan may need to be tailored to the particular type of fracture.

Efficacy of foot orthoses. What does the literature tell us?

This paper reviews the literature relating to foot orthoses, in particular foot orthoses that attempt to alter biomechanical function. Whilst few well-controlled studies have been performed, the findings from the available literature are generally positive. The authors provide an overview of this literature and then summarise the findings. The literature is categorised into six research outcome areas: (i) patient satisfaction, (ii) pain and deformity, (iii) plantar pressures, (iv) position and motion, (v) muscle activity, and (vi) oxygen consumption. In addition, the difficulties associated with researching foot orthoses are discussed.

The association between body composition and foot structure and function: a systematic review.

The aim of this systematic review was to investigate the relationship between body composition and foot structure and function. Six electronic databases (Ovid MEDLINE, Ovid EMBASE, Ovid AMED, CINAHL, Scopus and The Cochrane Library) and reference lists from relevant papers were searched on 2 September 2013. Sixteen papers that reported on the association between body composition and foot structure and function met our inclusion criteria and were reviewed. The evidence indicates that obesity is strongly associated with planus (low-arched) foot posture, pronated dynamic foot function and increased plantar pressures when walking. However, there is limited evidence to support an association between other body composition measures, such as fat mass, with foot structure or function.

Fat mass is a predictor of incident foot pain.

OBJECTIVE: Foot pain is a common complaint in adults. Increased BMI and fat mass have been linked only to foot pain prevalence. Therefore, a longitudinal study to examine the relationship between body composition and incident foot pain over 3 years was conducted. DESIGN AND METHODS: Sixty-one community dwelling participants from a previous study of musculoskeletal health, who did not have foot pain at study inception in 2008, were invited to take part in this follow-up study in 2011. Current foot pain was determined using the Manchester Foot Pain and Disability Index, and body composition was measured using dual X-ray absorptiometry at study baseline. RESULTS: Of the 51 respondents (84% response rate, 37 females and 14 males), there were 11 who developed foot pain. BMI ranged from underweight to morbidly obese (17-44 kg/m2), mean 27.0 ± 6.0 kg/m2. Incident foot pain was positively associated with both fat mass (odds ratio [OR] 1.11, 95% confidence interval [CI] 1.03-1.20) and fat-mass index (OR 1.28, 95% CI 1.04-1.57) in multivariate analysis. CONCLUSIONS: Fat mass is a predictor of incident foot pain. This study supports the notion that incident foot pain in overweight individuals is associated with fat mass rather than body mass alone.

The association between body mass index and musculoskeletal foot disorders: a systematic review.

The primary aim of this systematic review was to investigate the relationship between body mass index (BMI) and foot disorders. The secondary aim was to investigate whether weight loss is effective for reducing foot pain. Five electronic databases (Ovid MEDLINE, Ovid EMBASE, Ovid AMED, CINAHL and The Cochrane Library) and reference lists from relevant papers were searched in April 2011. Twenty-five papers that reported on the association between BMI and musculoskeletal foot disorders met our inclusion criteria and were reviewed. The evidence indicates: (i) a strong association between increased BMI and non-specific foot pain; and (ii) a strong association between increased BMI and chronic plantar heel pain in a non-athletic population. The evidence is inconclusive regarding the relationship between BMI and the following specific disorders of the foot; hallux valgus, tendonitis, osteoarthritis and flat foot. With respect to our second aim, there were only two prospective cohort studies that reported a reduction in foot symptoms following weight loss surgery. In summary, increased BMI is strongly associated with non-specific foot pain in the general population and chronic plantar heel pain in a non-athletic population. However, there is currently limited evidence to support weight loss to reduce foot pain.

Radiographic classification of osteoarthritis in commonly affected joints of the foot.

OBJECTIVE: To develop a radiographic atlas for the classification of osteoarthritis (OA) in commonly affected joints of the foot based on observations of osteophytes and joint space narrowing, and to assess its intra- and inter-examiner reliability. DESIGN: Weightbearing dorso-plantar and lateral foot radiographs from people aged over 65 years were examined, and an atlas was developed incorporating characteristic OA features of five foot joints: the first metatarsophalangeal joint, the first cuneo-metatarsal joint (1(st) CMJ), the second cuneo-metatarsal (2(nd) CMJ), the navicular-first cuneiform joint and the talonavicular joint. To assess the reliability of the atlas, two examiners independently rated 50 radiographs on two separate occasions. RESULTS: Observations using the atlas demonstrated moderate to excellent reliability within examiners (percentage agreement from 86 to 99% and weighted kappa from 0.45 to 0.95), and, with the exception of joint space narrowing of the 2(nd) CMJ from the lateral projection, fair to excellent reliability between examiners (percentage agreement from 86 to 97% and weighted kappa from 0.32 to 0.87). Intra-class correlation coefficients for the overall foot OA score (representing the sum of observations for all joints from both feet) ranged between 0.83 and 0.89 for intra-examiner comparisons, and between 0.72 and 0.74 for inter-examiner comparisons. CONCLUSION: Radiographic features of OA in commonly affected foot joints can be documented with high levels of agreement within examiners and moderate levels of agreement between examiners. Provided single examiners or consensus gradings are used, the atlas appears to be a useful tool to assist in the standardization of foot OA assessment for epidemiological and clinical studies.