Effects of foot orthoses and footwear interventions on impairments and quality of life in people with hip pain: A systematic review

Muscle Fat and Volume Differences in People With Hip-Related Pain Compared With Controls: A Machine Learning Approach

BACKGROUND

Hip-related pain (HRP) affects young to middle-aged active adults and impacts physical activity, finances and quality of life. HRP includes conditions like femoroacetabular impingement syndrome and labral tears. Lateral hip muscle dysfunction and atrophy in HRP are more pronounced in advanced hip pathology, with limited evidence in younger populations. While MRI use for assessing hip muscle morphology is increasing, with automated deep-learning techniques showing promise, studies assessing their accuracy are limited. Therefore, we aimed to compare hip intramuscular fat infiltrate (MFI) and muscle volume, in individuals with and without HRP as well as assess the reliability and accuracy of automated machine-learning segmentations compared with human-generated segmentation.

METHODS

This cross-sectional study included sub-elite/amateur football players (Australian football and soccer) with a greater than 6-month history of HRP [n = 180, average age 28.32, (standard deviation 5.88) years, 19% female] and a control group of sub-elite/amateur football players without pain [n = 48, 28.89 (6.22) years, 29% female]. Muscle volume and MFI of gluteus maximus, medius, minimis and tensor fascia latae were assessed using MRI. Associations between muscle volume and group were explored using linear regression models, controlling for body mass index, age, sport and sex. A convolutional neural network (CNN) machine-learning approach was compared with human-performed muscle segmentations in a subset of participants (n = 52) using intraclass correlation coefficients and Sorensen-Dice index.

RESULTS

When considering adjusted estimates of muscle volume, there were significant differences observed between groups for gluteus medius (adjusted mean difference 23 858 mm3 [95% confidence interval 7563, 40 137]; p = 0.004) and tensor fascia latae (6660 mm3 [2440, 13 075]; p = 0.042). No differences were observed between groups for gluteus maximus (18 265 mm3 [-21 209, 50 782]; p = 0.419) or minimus (3893 mm3 [-2209, 9996]; p = 0.21). The CNN was trained for 30 000 iterations and assessed its accuracy and reliability on an independent testing dataset, achieving high segmentation accuracy (mean Sorenson-Dice index >0.900) and excellent muscle volume and MFI reliability (ICC2,1 > 0.900). The CNN outperformed manual raters, who had slightly lower interrater accuracy (Sorensen-Dice index >0.800) and reliability (ICC2,1 > 0.800).

CONCLUSIONS

The increased muscle volumes in the symptomatic group compared with controls could be associated with increased myofibrillar size, sarcoplasmic hypertrophy or both. These changes may facilitate greater muscular efficiency for a given load, enabling the athlete to maintain their normal level of function. In addition, the CNNs for muscle segmentation was more efficient and demonstrated excellent reliability in comparison to manual segmentations.

Prefabricated contoured foot orthoses to reduce pain and increase physical activity in people with hip osteoarthritis: A randomised feasibility trial

BACKGROUND

Hip osteoarthritis (OA) is a prevalent and burdensome condition that leads to impaired quality of life and a substantial economic burden. Encouraging physical activity, particularly walking, is crucial for OA management, but many individuals with hip OA fail to meet recommended activity levels. Prefabricated contoured foot orthoses have shown promise in improving hip muscle efficiency during walking in laboratory settings, but their real-world feasibility and efficacy remain uncertain.

OBJECTIVE

The aim of this study was to assess the feasibility of conducting a fully powered randomised controlled trial (RCT) to evaluate the effectiveness of prefabricated contoured foot orthoses, prescribed via telehealth, in people with hip OA.

METHODS

This feasibility trial randomised 27 participants with hip OA into two groups: prefabricated contoured foot orthoses or flat shoe inserts. Feasibility outcomes were assessed, including recruitment rate, adherence, logbook completion, and dropout rate. Patient-reported outcomes and accelerometer-measured physical activity were collected as secondary outcomes.

RESULTS

While the recruitment rate was low (0.88 people/week), adherence to the intervention (59%), logbook completion (93%), and dropout rates (7%) met or exceeded our predefined feasibility parameters. Participants found the intervention acceptable, and practicality was demonstrated with minor adverse events. Preliminary efficacy testing indicated that prefabricated contoured foot orthoses positively affected physical activity (adjusted mean difference = 2590 [260 to 4920] steps/day), with comparable outcomes for hip-related quality of life and pain.

CONCLUSION

This trial supports proceeding to a fully powered RCT to assess the effect of teleheath prescribed prefabricated contoured foot orthoses on physical activity in people with hip OA.

STUDY REGISTRATION NUMBER

National Institutes of Health Trial Registry (NCT05138380).

[Experience with orthopaedic insoles-a cross-sectional study]

BACKGROUND

Orthopaedic insoles (OI) are used to treat a variety of foot problems.

OBJECTIVES

The aim of this cross-sectional study was to investigate the perceptions of the treatment with OI among the manufacturers of the OIs, the orthopaedic technicians (OT).

METHODS

OT from the federal states of Schleswig-Holstein and Lower Saxony in Germany were invited to take part in a survey. The questions included, among others, the number of prescriptions for the production of an OI per month and the materials used. Descriptive statistics, subgroup analyses and a linear regression analysis were performed.

RESULTS

Of the 312 questionnaires distributed, 159 were completed (response rate 51%). Most of the respondents were male (80%). The average age of the participants was 50. On average, OT produced 290 OI per month, with plastic being the most commonly used material (73%). OT with less than 20 years of professional experience are more likely to follow the doctor's instructions when producing OI than OT with more than 20 years of professional experience. The latter are more likely to base their decisions regarding the manufacture and issuing of OI on their own experience.

CONCLUSIONS

The production and issuing process of OI differs among OT. The different professional perspectives of the OT could play a role here, as does the lack of a standardized procedure. The factors listed in this study represent potential starting points for future research projects that could contribute to the development of evidence-based standards.