RESUMO Objetivo: Avaliar o resultado clínico e radiográfico dos pacientes submetidos à prótese de recapeamento de quadril para o tratamento da osteoartrose de quadril. Métodos: Foram avaliados retrospectivamente 30 pacientes com coxartrose tratados com prótese de recapeamento de quadril entre 2005 e 2014. Foram incluídos no estudo pacientes de ambos os sexos portadores de osteoartrose de quadril avançada, primária ou secundária. Foram coletados dados sobre complicações pós-operatórias e necessidade de revisão da prótese. Foram feitas radiografias AP de bacia e perfil de quadril para classificação da osteólise segundo os critérios de Amstutz; os questionários do escore funcional de Lequèsne e do nível de atividade física do escore UCLA foram aplicados nos períodos pré e pós-operatórios. Resultados: Após um seguimento médio de oito anos, observou-se melhoria estatisticamente significativa entre as médias dos resultados pré e pós-operatórios de ambos os escores (p < 0,001). Entretanto, foi observada uma elevada taxa de revisão das próteses (20%), correlacionada ao tamanho do componente femoral usado e à falha na técnica cirúrgica. Conclusão: A prótese de resurfacing de quadril pode proporcionar bons resultados, com a técnica adequada, em pacientes selecionados.

ABSTRACT Objective: To assess the clinical and radiographic outcomes of hip resurfacing arthroplasty for the treatment of hip osteoarthritis. Methods: This study retrospectively assessed 30 patients with hip osteoarthritis who underwent hip resurfacing arthroplasty between 2005 and 2014. Patients of both genders suffering from advanced primary and secondary hip osteoarthritis were included in the study. Data were collected about postoperative complications and the need for revision of the arthroplasty. Antero-posterior pelvis and lateral hip x-rays were performed in order to classify osteolysis according to the Amstutz criteria; the Lequèsne index of severity for osteoarthritis of the hip and the UCLA activity level questionnaires were answered pre- and postoperatively. Results: After a mean follow-up of eight years, a statistically significant improvement was observed between the mean of the outcomes of both scores, when compared pre- and postoperatively (p < 0.001). Nevertheless, there was a high incidence of arthroplasty revision (20%), related to the size of the femoral stem and errors in surgical technique. Conclusion: Using the appropriate technique, hip resurfacing arthroplasty can present good results in well-selected patients.

OBJECTIVES: Anterior cruciate ligament injury leads to adaptive responses to maintain postural control. However, there is no consensus regarding whether leg dominance also affects postural control in athletes with anterior cruciate ligament injury. The purpose of this study was to evaluate dynamic and static postural control among athletes with and without anterior cruciate ligament injury to the dominant leg. METHODS: Twenty-eight athletes, twenty-one males and seven females aged 15-45 years, were allocated to one of two groups: the anterior cruciate ligament injury group (26±3 years) or the control group without anterior cruciate ligament injury (25±6.5 years). All subjects performed one legged stance tests under eyes open and eyes closed conditions and squat and kick movement tests using a postural control protocol (AccuSwayPlus force platform, Massachusetts). The center of pressure displacement and speed were measured by the force platform. In addition, the distance traveled on the single-leg hop test was assessed as an objective measure of function. RESULTS: Significantly greater mediolateral sway was found under the eyes closed condition (p=0.04) and during squat movement (p=0.01) in the anterior cruciate ligament injury group than in the control group. Analysis of the single-leg hop test results showed no difference between the groups (p=0.73). CONCLUSION: Athletes with anterior cruciate ligament injury had greater mediolateral displacement of the center of pressure toward the dominant leg under the eyes closed condition and during squat movement compared to control athletes.