Necrosis idiopática de la cabeza femoral: Estudio histopatológico, radiográfico y de fluorescencia

A comparatlve study is made of the histopathology, radiology and f1uorescence of tetracyclin uptake in 15 cases of idiopathic necrosis of the femoral head (Ficatand Arlet Degrees 111 and IV) treated with substitution arthroplasty. Necrosis was seen to be multifocal in 30% of the cases studied. The Iimits of necrotic bone werepoorly defined in all patients; the most peripheral necrotic area presented occupied osteocytic lacunae, with a significantly increased number of empty osteocytic lacunaewithin apparently healthy bone. These observations, together with scant histologyc and ñuosescent evidence of reparation activity, point to a metebolic bone disease involving the entire femoral head, with regions of total necrosis. Radiography showed great discrepancies with the macro and microscopical appearance of the necrotic zone.

A comparatlve study is made of the histopathology, radiology and f1uorescence of tetracyclin uptake in 15 cases of idiopathic necrosis of the femoral head (Ficatand Arlet Degrees 111 and IV) treated with substitution arthroplasty. Necrosis was seen to be multifocal in 30% of the cases studied. The Iimits of necrotic bone werepoorly defined in all patients; the most peripheral necrotic area presented occupied osteocytic lacunae, with a significantly increased number of empty osteocytic lacunaewithin apparently healthy bone. These observations, together with scant histologyc and ñuosescent evidence of reparation activity, point to a metebolic bone disease involving the entire femoral head, with regions of total necrosis. Radiography showed great discrepancies with the macro and microscopical appearance of the necrotic zone.