ORCID Profile
0000-0002-7802-9562
Current Organisation
University of South Australia
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Publisher: Elsevier BV
Date: 11-2015
DOI: 10.1016/J.JSAMS.2014.11.007
Abstract: This study aimed to determine the immediate effects of footwear and foot orthoses on transverse plane rotation of the knee joint during the stance phase of jogging gait. An experimental, within subjects, repeated measures design. Three-dimensional knee kinematics were estimated in the transverse plane by surface-mounted markers as 14 asymptomatic participants ran in four randomised conditions neutral shoe, neutral shoe with customised orthoses, neutral shoe with prefabricated orthoses, and a stability shoe. Peak internal/external rotation joint angles and ranges of motion (ROM) during loading response, midstance and propulsion were determined. Immediate subjective comfort was also recorded for each condition using a 100 mm visual analogue scale. Significant main effects of condition were observed for all outcomes except transverse plane knee ROM during loading response (p < 0.05). All significant differences occurred between the stability shoe and another condition, with less knee internal rotation in the stability shoe (mean differences ranged between 1.7° and 6.1°) (p < 0.05). The neutral shoe with prefabricated orthoses was reported as more uncomfortable than all other testing conditions. The stability shoe reduced peak knee internal rotation throughout stance phase of jogging more than any other condition. Importantly, it was subjectively as comfortable as the other conditions. These results identify the ability for footwear alone to induce immediate proximal kinematic effects. The use of the kinematic theory behind foot orthoses therapy is also questioned.
Publisher: Springer Science and Business Media LLC
Date: 15-08-2017
Publisher: Springer Science and Business Media LLC
Date: 29-11-2021
DOI: 10.1186/S13047-021-00495-3
Abstract: The Australian wine industry is a valuable part of the wider Australian economy worth approximately A$45 billion annually and employs 163,790 people either full time or part time. Australian agricultural industries are amongst the nation’s most dangerous workplaces with joint, ligament, muscle and tendon injuries being commonplace along with wounds, lacerations and musculoskeletal diseases. It is therefore important to try and minimise the risk of injuries to workers. The aims of this study were to (1) identify whether lower limb problems occur in the Australian wine industry and (2) identify the types of safety footwear worn. Participants were recruited from the Australian wine industry. The study was a cross-sectional anonymous survey of 82 questions with n = 207 respondents. Questions related to job role performed, types of lower limb problems experienced, level of pain, restriction of activities, types of footwear worn, general health and physical health. The main working roles were winery (73.4%), vineyard (52.2%), laboratory (39.6%), cellar door (32.4%) and office (8.2%), with 63.3% of participants working in more than one role. Lower back pain was the most commonly reported problem at 56% followed by foot pain (36.7%), knee pain (24.6%), leg pain (21.3%), ankle pain (17.9%), hip pain (15.5%), toe pain (13%) and heel pain (11.1%). The most popular footwear used by participants were elastic sided safety boots, followed by high cut lace up safety boots with side zip. Overall, although the pain experienced was moderate, it did not impact the workers ability to perform their duties and the majority self-reported as being in very good general and physical health. To date no data have been published on the types of lower limb problems or the types of safety footwear worn in the Australian wine industry. This study is the first to demonstrate that elastic sided safety boots were the most popular amongst respondents and that lower limb problems occur with workers. Therefore, further research into the safety footwear used in the Australian wine industry is needed to better support workers health while working in their varied roles and conditions.
Publisher: American Podiatric Medical Association
Date: 09-2021
DOI: 10.7547/19-133
Abstract: The neutral calcaneal stance position (NCSP), despite its known issues, is currently used as an “ideal” measure compared with the resting stance position in clinical podiatric medicine. The nonweightbearing (NWB) foot position, as used in the foot mobility magnitude (FMM), can provide an alternative comparative position, which is partially validated, if a significant correlation between the NCSP and the NWB position exists. This study aimed to establish the correlation between the component measures of the FMM in the NCSP and the NWB foot position of the FMM. Eighty participants were recruited. Measures of dorsal arch height (DAH) and midfoot width (MFW) were obtained at the 50% total foot length mark in the NCSP and the NWB position by two examiners using the apparatus described by McPoil et al. Reliability analysis with intraclass correlation coefficients (ICCs) indicated intrarater results of 0.90 to 0.99 for DAH and 0.96 to 0.99 for MFW and interrater results of 0.90 for DAH and 0.96 for MFW in the NWB position. Using a Pearson product moment correlation coefficient analysis, there was a significant correlation between the NCSP and the NWB position for DAH ( r = 0.82) and MFW ( r = 0.86). A significant correlation between the NCSP and the NWB position was evident when the measures of DAH and MFW were conducted. Therefore, clinically, the NWB position can potentially replace the NCSP as the ideal position for clinical treatment.
Publisher: Elsevier BV
Date: 03-2009
DOI: 10.1016/J.FOOT.2008.07.004
Abstract: Sever's disease is a condition which has been described inconsistently in the literature with respect to pathology, aetiology and management. In particular, the impact of this condition has been overlooked, probably because it is usually self-limiting. This study used a prospective comparative design study to determine the impact of Sever's disease on the quality of life of its sufferers. Three scales--Happiness, Satisfaction with symptoms and Pain/comfort scale--from the POSNA musculoskeletal questionnaire showed significant differences between the symptomatic and control groups. Although the condition may resolve with time, these results show that it has a considerable impact on children's lives.
Publisher: American Podiatric Medical Association
Date: 03-2011
DOI: 10.7547/1010133
Abstract: Background: Sever’s disease, also known as calcaneal apophysitis, is thought to be an inflammation of the apophysis of the heel, which is open in childhood. This condition has been commented on and looked at in a retrospective manner but has not been examined systematically. We assembled the most commonly cited theoretical causative models identified from the literature and tested them to determine whether any were risk factors. Methods: Children with Sever’s disease were compared with a similarly aged nonsymptomatic population to determine whether identifiable risk factors exist for the onset of Sever’s disease. Areas raised in the literature and, hence, compared were biomechanical foot malalignment, as measured by Root et al–type foot measurements and the Foot Posture Index ankle joint dorsiflexion, measured with a modified apparatus body mass index and total activity and types of sport played. Results: Statistically significant but small odds ratios were found in forefoot to rearfoot determination and left ankle joint dorsiflexion. Conclusions: This study suggests that there is no evidence to support that weight and activity levels are risk factors for Sever’s disease. The statistically significant but clinically negligible odds ratio (0.93) on the left side for decreased ankle joint dorsiflexion and statistically significant and clinically stronger odds ratio bilaterally for forefoot to rearfoot malalignment suggest that biomechanical malalignment is an area for further investigation. (J Am Podiatr Med Assoc 101(2): 133–145, 2011)
Publisher: Informa UK Limited
Date: 10-05-2017
Publisher: Informa UK Limited
Date: 10-05-2017
Publisher: Springer Science and Business Media LLC
Date: 07-02-2017
Publisher: SAGE Publications
Date: 15-03-2019
Publisher: American Podiatric Medical Association
Date: 11-2018
DOI: 10.7547/16-119
Abstract: Xerosis (dryness) of the foot is commonly encountered in clinical care and can lead to discomfort, pain, and predisposition to infection. Many moisturizing products are available, with little definitive research to recommend any particular formulation. We compared two commonly prescribed moisturizing products from different ends of the price spectrum (sorbolene and 25% urea cream) for their effectiveness in reducing xerosis signs using the Specified Symptom Sum Score. A randomized clinical trial of parallel design was conducted over 28 days (February–May 2015) on 41 participants with simple xerosis. Participants, therapists, assessors, and data entry personnel were blinded to treatment, and allocation was determined via a randomization table. Thirty-four participants completed the study (19 urea and 15 sorbolene), with one reporting minor adverse effects. There were statistically significant improvements in both groups after 28 days. Mean differences between pre and post scores were 3.50 (95% confidence interval [CI], 2.80 to 4.20) for the urea group and 2.90 (95% CI, 2.00 to 3.80) for the sorbolene group. There was a slightly lower mean posttreatment score in the urea group (1.16 95% CI, 0.67 to 1.64) than in the sorbolene group (1.80 95% CI, 1.25 to 2.35), but this difference was not significant (P ≤ .09). Effect size of difference was –0.48 (95% CI, –1.16 to 0.22). In this study, there was no difference between using sorbolene or 25% urea cream to treat symptoms of foot xerosis. A recommendation, therefore, cannot be made based on efficacy alone however, sorbolene treatments are invariably cheaper than urea-based ones.
No related grants have been discovered for Rolf Scharfbillig.