This study shows that when the posterior injury is a fracture of the iliac wing or a mixed fracture with SI propagation, a long-term satisfactory functional result can be obtained without an exact reduction even in cases of vertical instability. Simple methods are usually sufficient, and it seems unnecessary to propose more aggressive treatment. It is important, however, to recognize that SI fracture-dislocations (17 percent in this series) seem to be quite different from pure SI disruptions in terms of persistent pain. Moreover, it appears that exact reduction of pure SI lesions is critical for good functional results, something that is difficult to obtain with conservative procedures. Sacral fractures represent a special problem for the surgeon because of the frequency of fair results in which neurologic lesions whose pathophysiology is poorly known seem to be responsible.

Introduction Rheumatoid arthritis (RA) is a heterogeneous disease and its underlying molecular mechanisms are still poorly understood. Because previous microarray studies have only focused on long-standing (LS) RA compared to osteoarthritis, we aimed to compare the molecular profiles of early and LS RA versus control synovia.

Frontal plane varus deviation is one of the mechanisms hypothesized to be involved in the pathogenesis of medial compartment osteoarthritis of the knee. But only a few authors have suggested a role for tibial and femoral torsion. In the current study, CT scan was used to measure bone torsion. The torsional morphology of the lower limb was defined by the "index of cumulative torsions" (ICT). The resulting values were compared to the frontal angular deviation data. The effects of tibial and femoral torsion on the position of the lower limb during the stance phase of walking and the consequences for the knee are discussed.

This preliminary clinical study has shown the advantages of this mini-invasive technique. It could not evaluate all the possible disadvantages inherent in the method. These points will be evaluated in a multicenter study justified by these preliminary results.

A fluctuant, painful, subcutaneous, and intermuscular tumor developed in a 38-year-old man with severe acquired immunodeficiency syndrome (AIDS) in which immunodeficiency was severe. Surgery revealed lesions that formed a multilocular pouch embedded in deep tissues in the forearm filled with tapiocalike material containing a viscous fluid, granules, and cysticercilike small vesicles. Pathologic and parasitologic evaluation showed cysticerci embedded in a fibrocollagen reaction with inflammatory granulomatous reaction. Each cysticercus contained an invaginated scolex with two rows of small (i.e., 80 microm) and large (i.e., 114 microm) rostellar hooks, identical to larva of Taenia crassiceps. All clinical, parasitologic, and pathologic features of these cysticerci were very different from those of all other larval cestode (i.e., Taenia solium cysticercosis, coenurosis, sparganosis, cysticercosis due to Taenia saginata [Cysticercus bovis], primary and secondary hydatidosis [Echinococcus species]). T crassiceps cysticerci usually develop in subcutis and pleuroperitoneal cavities of rodents, whereas the adult tapeworm is commonly found in the digestive tract of foxes. Biologic properties of T crassiceps cysticerci and epidemiologic characteristics of pandemic human immunodeficiency virus (HIV) could eventually indicate new potential cases of T crassiceps cysticercosis in humans.

We present a case report of severe localized infection after continuous popliteal sciatic nerve block. The report highlights the importance of meticulous asepsis and possibly limiting the duration of catheter use.

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Two cases of solitary benign neurinomas of the sciatic popliteal nerves are reported. Computed tomography (CT) confirmed the clinically suspected diagnosis of a tumor of nervous origin, and provided accurate preoperative location of these tumors.