RESUMO
AIMS: Femoroacetabular impingement (FAI) has been highlighted and well documented primarily in Western countries and there are few large studies focused on FAI-related morphological assessment in Asian patients. We chose to investigate this subject. PATIENTS AND METHODS: We assessed the morphology of the hip and the prevalence of radiographic FAI in Japanese patients by measuring predictors of FAI. We reviewed a total of 1178 hips in 695 men and 483 women with a mean age of 58.2 years (20 to 89) using CT images that had been obtained for reasons unrelated to symptoms from the hip. We measured the lateral centre edge angle, acetabular index, crossover sign, alpha angle and anterior femoral head-neck offset ratio. RESULTS: A total of 441 hips (37.4%) had pincer-type deformity (41.7% men, 31.3% women) and 534 (45.3%) had cam-type deformity (54.4% men, 32.3% women). Moreover, 773 hips (65.6%) had at least one parameter that predisposes to FAI (74.0% men, 53.6% women) and 424 hips (36.0%) had two or more parameters (43.6% men, 25.0% women). CONCLUSION: The prevalence of radiographic FAI was common in Japanese patients who are generally considered to have dysplastic hips. Cite this article: Bone Joint J 2016;98-B:1167-74.
Assuntos
Impacto Femoroacetabular/diagnóstico , Impacto Femoroacetabular/epidemiologia , Imageamento Tridimensional , Tomografia Computadorizada por Raios X/métodos , Acetábulo/anormalidades , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Cabeça do Fêmur/anormalidades , Luxação do Quadril/diagnóstico , Luxação do Quadril/epidemiologia , Humanos , Japão/epidemiologia , Pessoa de Meia-Idade , Variações Dependentes do Observador , Valor Preditivo dos Testes , Prevalência , Amplitude de Movimento Articular/fisiologia , Estudos Retrospectivos , Índice de Gravidade de Doença , Distribuição por Sexo , Adulto JovemRESUMO
In this report, we described an adult case with a lumbar herniated nucleus pulposus that had migrated to the S1 nerve root foramen from L5-S1 disc space. Endoscopically, the migrated mass was successfully removed after laminectomy at the S1 with a small skin incision of 20 mm in length. Unlike the other levels, the intraforaminally migrated mass along the S1 root can be excised without any removal of the facet joints; therefore, additional spinal fusion is not necessary. Thus, an S1 foraminal migrated mass can be a good surgical candidate for minimally invasive endoscopic surgery.
