[Posterior luxation of the fifth lumbar vertebra to the sacrum. Apropos of a case]. / Luxation postérieure de L5 sur le sacrum. A propos d'un cas.

The authors have observed a case of lumbo-sacral dislocation with posterior displacement of the fifth lumbar vertebra. There was partial impairment of the roots of the cauda equina. After open reduction and internal fixation, partial recovery was seen. A review of the literature revealed eighteen other similar cases.

[Above acetabulum aneurismal cyst. One case (author's transl)]. / Kyste anévrysmal sus-cotyloïdien. Un cas.

One case of above acetabulum aneurismal cyst is presented and the authors insist on the main features of this benign tumor supplied with radiology, clinic and evolution. Location of such cyst are uncommon: 4 cases upon 137. Medical team has to resolve two problems: on one hand, positive diagnosis of this benign tumor, on the other hand, treatment of this particular location.