Abstract INTRODUCTION Freshwater stingray envenomations are an important cause of morbidity in riverine populations living in various regions of Brazil. The sequelae include temporary or permanent disability. This study aimed to identify sociodemographic, clinical, and therapeutic aspects related to stingray injuries in such populations. METHODS This cross-sectional study was conducted in the Extractive Reserve of Tapajos-Arapiuns, located in the municipalities of Santarém and Aveiro (Pará State). A convenience sample comprising 300 local adults was used to obtain data by means of a questionnaire/ interview. RESULTS Overall, 19 (6.3%) participants reported having sustained a stingray injury in the 12 months prior to the study. All 19 were injured either while fishing (n=13 [68.4%]) or engaging in other riverine activities. Most injuries [n=14 (73.7%)] occurred from September through November, and most injured respondents [n=15 (78.9%)] reported seeing stingrays at beaches. Severe pain and the appearance of ulcers in the later stages of envenomation were described by 18 (94.7%) and 12 (63.2%) participants, respectively. CONCLUSIONS Freshwater stingray injuries, which should be considered occupational injuries, are common in the study area, especially in places like beaches or in the lakes that form during the dry season, when stingrays are routinely observed. A significant proportion of respondents was unaware of the correct first aid measures and had insufficient resources to treat the complications of these injuries in the locality where they reside. Interactive activities involving local residents - such as lectures and the distribution of simple pamphlets providing information about stingray injuries - are needed.

OBJETIVO: Descrever e comparar as características antropométricas dos pés de sujeitos saudáveis e diabéticos neuropatas por meio de índices classificatórios do Arco Longitudinal Medial (ALM): Índice do Arco (IA), Índice de Chippaux-Cmirak (CSI) e Ângulo  (Â) e comparar a classificação destes métodos nestes grupos. MATERIAIS E MÉTODO: Grupo controle (GC) composto por 21 sujeitos saudáveis, e grupo diabético (GD), formado por 46 diabéticos portadores de neuropatia diabética. Pela impressão plantar foram calculados os índices. RESULTADOS: Houve maior proporção de pés planos no GD para os três índices (IA: 32,2%, CSI: 59,7%, A: 17,5%), enquanto os pés cavos comportaram-se de forma contrária. Os grupos foram estatisticamente diferentes em relação à proporção de pés planos no IA (p=0,0080) e no CSI (p=0,0000) e de pés cavos no  (p=0,0036). Houve diferença significativa quando comparados GC e GD para os três índices: IA (p=0,0027), CSI (p=0,0064),  (p=0,0296). CONCLUSÃO: Os dados demonstram alterações motoras e ortopédicas decorrentes da neuropatia periférica, responsável pela desestruturação do pé, levando ao desabamento do ALM. Observou-se que o ângulo A destoou fortemente da classificação do arco feita pelos outros dois índices, e com isso destacamos que sua utilização merece cuidado.

OBJECTIVE: To describe and compare foot anthropometry in healthy and diabetic subjects using Medial Longitudinal Arch (MLA) classificatory indexes: Arch Index (AI), Chippaux-Smirak Index (CSI) and  Angle (Â), as well as to compare the classification of these methods in each group. MATERIALS AND METHODS: Control Group (CG) composed by 21 healthy subjects and Diabetic Group (DG), with 46 diabetic neuropathy subjects. The indexes were calculated from footprints. RESULTS: A larger proportion of flat feet was seen in DG for the three indexes (AI: 32,2%, CSI: 59,7%, A: 17,5%), while highly arched feet acted oppositely. The groups were statistically different for the proportion of flat feet in AI (p=0,0080) and CSI (p=0,0000) and high feet in  (p=0,0036). There were significant differences when compared GC and GD in the three indexes: IA (p=0,0027), CSI (p=0,0064),  (p=0,0296). CONCLUSION: Data showed motor and orthopedic changes originated by peripheral neuropathy, which is responsible for foot changes, causing longitudinal arch crumbling. It was seen that A Angle strongly disagreed when compared with the arch classification made by the other two indexes and therefore, its application needs care.