[en] The histological aspect of the femoral head in patients operated for osteonecrosis (stages III and IV) and undergoing a total hip prosthesis, was correlated with nuclear magnetic resonance, pre- and post-operatively. The decreased signal of the NMR image is particularly clear in the area of sub-chondral bone plate, the fibrous and vascular area bordering the lower portion of the sequestrum. On the contrary, the aspect of the signal is heterogeneous in the sequestrum itself. This may be explained by a different condition of the adipocytes in the sequestrum
[fr]
L'aspect histologique des tetes femorales de patients operes pour osteonecrose (stades III et IV) par prothese totale de hanche a ete correle avec l'aspect en imagerie par resonance magnetique nucleaire a la fois en pre-et post-operatoire. La diminution du signal de l'image en RMN est nette dans la zone de la plaque osseuse sous-chondrale, dans la zone fibreuse et vasculaire qui limitent la partie inferieure du sequestre. Par contre, l'aspect du signal est heterogene dans le sequestre lui-meme. Ceci peut s'expliquer par l'etat different des adipocytes dans le sequestreJournal
Revue du Rhumatisme et des Maladies Osteo-Articulaires; ISSN 0035-2659; 
; CODEN RRMOA; v. 56(11); p. 741-744
; CODEN RRMOA; v. 56(11); p. 741-744
[en] Twelve patients underwent biopsy of cervical vertebral bodies under CT guidance. An accurate diagnosis was obtained in 11. No complications were observed, except for a transitory recurrent laryngeal nerve palsy. Technical problems of the cervical spine biopsy are discussed and the utility of bone biopsy with a coaxial trephine system is emphasized. (orig.)
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