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1.
Eur Spine J ; 22(5): 1045-52, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23242621

RESUMO

PURPOSE: Facet tropism is defined as asymmetry between left and right facet joints and is postulated as a possible cause of disc herniation. In the present study, the authors used a 3-T MRI to investigate the association between facet tropism and lumbar disc herniation at a particular motion segment. They also examined whether the disc herniated towards the side of the more coronally oriented facet joint. METHODS: Sixty patients (18-40 years) with single level disc herniation (L3-L4, L4-L5, or L5-S1) were included in the study. Facet angles were measured using MRI of 3-T using the method described by Karacan et al. Facet tropism was defined as difference of 10° in facet joint angles between right and left sides. Normal disc adjacent to the herniated level was used as control. We also examined if disc herniated towards the side of more coronally oriented facet. RESULTS: Twenty-five herniations were at L4-L5 level and 35 at L5-S1. Statistical analysis was performed using the Fischer Exact Test. At L4-L5 level, 6/25 cases had tropism compared to 3/35 controls (p = 0.145). At L5-S1 level, 13/35 cases had tropism as compared to 1/21 controls (p = 0.0094). Of 19 cases having tropism, the disc had herniated towards the coronally oriented facet in six (p = 0.11). CONCLUSION: The findings of the study suggest that facet tropism is associated with lumbar disc herniation at the L5-S1 motion segment but not at the L4-L5 level.


Assuntos
Deslocamento do Disco Intervertebral/patologia , Vértebras Lombares/patologia , Articulação Zigapofisária/patologia , Adolescente , Adulto , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino
2.
Arch Orthop Trauma Surg ; 131(4): 443-6, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20567838

RESUMO

Neglected dislocations of the hip are uncommon and open reduction is usually followed by avascular necrosis and subsequent coxarthrosis. We present a rare case of neglected, locked, obturator type of inferior hip dislocation in a young adult presenting 6 months after initial trauma treated with a cementless total hip arthroplasty which, to the best of our knowledge, has not been reported previously. Technical aspects of total hip arthroplasty and other treatment options in this scenario are discussed.


Assuntos
Artroplastia de Quadril , Luxação do Quadril/cirurgia , Adulto , Cicatriz/patologia , Colo do Fêmur/cirurgia , Luxação do Quadril/diagnóstico por imagem , Luxação do Quadril/patologia , Humanos , Masculino , Osteotomia , Tomografia Computadorizada por Raios X
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