Aluisio Otavio Vargas Avila

Osteotomia em Chevron modificada: análise preliminar do comportamento baropodométrico

OBJECTIVE: To evaluate the clinical and baropodometric characteristics of the gaits of individuals with a hallux valgus deformity after modified Chevron osteotomy, in isolation or in association with the Weil osteotomy. METHODS: Foot evaluation happened before and three months after surgery analyzing 27 mildly and moderately deformed feet. The clinical evaluation included the AOFAS score and radiographic measurements. The baropodometric evaluation was done with the Emed-at platform. Peak of Pressure, Pressure-Time Integral and Relative Load were calculated in 10 different regions of the feet: calcaneous, midfoot, first to fifth metatarsal regions, hallux, second and third to fifth toes. RESULTS: After the surgical procedure, an increase in AOFAS scores and a decrease of radiographic parameters were seen. The baropodometric evaluation, after isolated Chevron osteotomy, showed a reduction in pressure and strength under the first metatarsal and hallux, as well as an increase in the same variables on central and lateral metatarsals. After Chevron/Weil osteotomy significant alterations had only occurred in the region of the hallux and toes. CONCLUSION: In the short-term, the modified Chevron technique promoted improvements in clinical conditions and radiographic parameters. The baropodometric evaluation evidenced a load transference from medial to lateral regions of the forefoot, possibly due to the short postoperative period.

Analysis impact in shoes with different material soles

To our knowledge, this study is the first to investigate TP muscle activation profiles in novice BF runners. Changes in TP activation following exertion may lead to altered footfall patterns and load distributions in novice BF runners. This information is being used to inform the design of an expanded, controlled prospective study aimed at understanding the effects of fatigue in novice BF runners.

Comparação da distribuição de pressão plantar em sujeitos com pés normais e com pés planos durante a marcha

The aim of this study was to determine the possible relationship between loss of the normal medial longitudinal arch measured by the height of the navicular bone in a static situation and variables related to plantar pressure distribution measured in a dynamic situation. Eleven men (21 ± 3 years, 74 ± 10 kg and 175 ± 4 cm) participated in the study. The Novel Emed-AT System was used for the acquisition of plantar pressure distribution data (peak pressure, mean pressure, contact area, and relative load) at a sampling rate of 50 Hz. The navicular drop test proposed by Brody (1982) was used to assess the height of the navicular bone for classification of the subjects. The results were compared by the Mann-Whitney U test, with the level of signi- ficance set at p ≤ 0.05. Differences were observed between the two groups in the mid-foot region for all variables studied, with the observation of higher mean values in subjects with flat feet. There were also significant differences in contact area, relative load, peak pressure, and mean pressure between groups. The present study demonstrates the importance of paying attention to subjects with flat feet because changes in plantar pressure distribution are associated with discomfort and injuries.The aim of this study was to determine the possible relationship between loss of the normal medial longitudinal arch measured by the height of the navicular bone in a static situation and variables related to plantar pressure distribution measured in a dynamic situation. Eleven men (21 ± 3 years, 74 ± 10 kg and 175 ± 4 cm) participated in the study. The Novel Emed-AT System was used for the acquisition of plantar pressure distribution data (peak pressure, mean pressure, contact area, and relative load) at a sampling rate of 50 Hz. The navicular drop test proposed by Brody (1982) was used to assess the height of the navicular bone for classification of the subjects. The results were compared by the Mann-Whitney U test, with the level of significance set at p ≤ 0.05. Differences were observed between the two groups in the mid-foot region for all variables studied, with the observation of higher mean values in subjects with flat feet. There were also significant differences in contact area, relative load, peak pressure, and mean pressure between groups. The present study demonstrates the importance of paying attention to subjects with flat feet because changes in plantar pressure distribution are associated with discomfort and injuries.