OBJECTIVES: The purpose is to study the effects of hyperbaric oxygen therapy and autologous platelet concentrates in healing the fibula bone of rabbits after induced fractures. METHODS: A total of 128 male New Zealand albino rabbits, between 6-8 months old, were subjected to a total osteotomy of the proximal portion of the right fibula. After surgery, the animals were divided into four groups (n = 32 each): control group, in which animals were subjected to osteotomy; autologous platelet concentrate group, in which animals were subjected to osteotomy and autologous platelet concentrate applied at the fracture site; hyperbaric oxygen group, in which animals were subjected to osteotomy and 9 consecutive daily hyperbaric oxygen therapy sessions; and autologous platelet concentrate and hyperbaric oxygen group, in which animals were subjected to osteotomy, autologous platelet concentrate applied at the fracture site, and 9 consecutive daily hyperbaric oxygen therapy sessions. Each group was divided into 4 subgroups according to a pre-determined euthanasia time points: 2, 4, 6, and 8 weeks postoperative. After euthanasia at a specific time point, the fibula containing the osseous callus was prepared histologically and stained with hematoxylin and eosin or picrosirius red. RESULTS: Autologous platelet concentrates and hyperbaric oxygen therapy, applied together or separately, increased the rate of bone healing compared with the control group. CONCLUSION: Hyperbaric oxygen therapy and autologous platelet concentrate combined increased the rate of bone healing in this experimental model.

JUSTIFICATIVA E OBJETIVOS: A torção de tornozelo é uma das doenças mais frequentes nas emergências ortopédicas. Normalmente prescrevem-se analgésicos e anti-inflamatórios. O objetivo deste estudo foi avaliar se o etoricoxibe na dose diária de 60 mg é tão efetivo quanto à dose de 90 mg no tratamento da dor e inflamação em pacientes com torções de tornozelo graus I e II. MÉTODO: Estudo clínico aleatório, duplamente encoberto e controlado foram estudados 43 pacientes com diagnóstico de entorse de tornozelo graus I e II, com idade média de 32 anos. Os pacientes foram divididos em dois grupos aleatoriamente: grupo I, constituído por 23 pacientes tratados com 90 mg de etoricoxibe em dose única diária, e grupo I, constituído por 20 pacientes em uso de 60 mg em dose única diária. As avaliações pela escala analógica visual (EAV) e avaliação funcional foram feitas após 7 e 15 dias de tratamento. RESULTADOS: Observou-se diminuição significativa da dor entre as visitas pré e pós o uso do medicamento, com uma média de 4,1 pontos na EAV (p < 0,001), porém a diminuição da intensidade da dor não dependeu do esquema terapêutico utilizado. Um paciente teve a medicação suspensa, devido à tolerabilidade, que foi considerada boa em 90,7% dos pacientes. CONCLUSÃO: As doses de 60 e 960 mg de etoricoxibe foram efetivas e bem toleradas para o controle da dor aguda em pacientes com entorse do tornozelo.

BACKGROUND AND OBJECTIVES: Ankle sprain is one of the most frequent diseases in orthopedic emergencies. In general, analgesics and anti-inflammatory drugs are prescribed. This study aimed at evaluating whether 60 mg daily etoricoxib is as effective as 90 mg daily etoricoxib to treat pain and inflammation in patients with ankle sprain grades I and II. METHOD: This is a clinic, randomized, double-blind and controlled study which has evaluated 43 patients with ankle sprain grades I and II, with mean age of 32 years. Patients were randomly distributed in two groups: group I, made up of 23 patients treated with 90 mg daily bolus etoricoxib, and group II, made up of 20 patients under 60 mg daily bolus dose. Patients were evaluated by the visual analog scale (VAS) and by functional evaluation after 7 and 15 days of treatment. RESULTS: There has been significant pain improvement between visits before and after using the drug, with a mean of 4.1 VAS score (p < 0.001), however pain intensity improvement did not depend on therapeutic schedule. Drug was withdrawn from one patient due to tolerability, which was considered good for 90.7% of patients CONCLUSION: Both 60 mg and 90 mg etoricoxib doses were effective and well tolerated to control acute pain in ankle sprain patients.