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Copyright of EMC-Rhumatologie--Orthopedie is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of EMC-Rhumatologie--Orthopedie is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of EMC-Rhumatologie--Orthopedie is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Abstract: Herpes zoster is a disease which occurs secondary to the reactivation of varicella-zoster virus. Motor involvement in acute herpes zoster is rare. We report a case of sciatica L5 due to herpes zoster infection with motor loss. Typical skin lesions occurred one week before the sciatica. Radiological finding did not explain the paresis. The diagnosis of zoster sciatica with motor involvement was suspected. Serological tests and cerebrospinal fluid examination established the diagnosis. The antiviral and physical treatment was conducted in order to improve functional outcome. [Copyright &y& Elsevier]

Abstract: Therapy with anti-TNFα in rheumatoid arthritis may induce autoimmune disorders. Induction of autoantibodies is frequently observed, but lupus-like syndrome is rare and few cases only have been reported. We report a 41-year-old female, treated with etanercept for a rheumatoid arthritis, who developed a cutaneous lupus induced without any other organ involvement, associated with high ANA and DNA antibody titres. The skin biopsy and the histological analysis with immunofluorescence confirmed the diagnosis. The anti-TNFα treatment was stopped. Corticosteroids were increased and hydroxychloroquine administered because skin lesions persist after three months. [Copyright &y& Elsevier]

Competing Interests: G. Chalès déclare des interventions ponctuelles - rapports d’expertise, activités de conseil,conférences,actions de formation - pour Mayoly Spindler,Ipsen, Menarini,Novartis, Grünenthal et avoir été pris en charge à l’occasion de déplacements pour congrès par Menarini, Ipsen, Grünenthal.

Calcium pyrophosphate dihydrate (CPPD) crystal deposition disease is a joint pathology that affects joints, fibrocartilages and periarticular structures. Chondrocalcinosis refers to CPPD deposits on the X-ray that does not summarize the disease. It willingly affects the knees and the wrists, but all the joints can be affected. There are primitive and secondary forms of the disease to particularly look for in patients less than 50 years. The diagnosis is usually easy with standard radiography, ultrasound and synovial fluid analysis that shows the microcrystals. The therapeutics of the acute attacks are nonspecific and close to those used for acute attacks of gout.

Despite the continuing undertreatment, gout has seen something of renaissance in terms of research into epidemiology, genetics, diagnostic criteria, imaging and new treatments. In Metropolitan France, gout prevalence was estimated at 0.9 %. A recent genome-wide association study identified new loci of interest. An easy-to-use diagnostic rule for gout care shows good performance in primary care when joint fluid analysis is not available. Gout is associated with a number of comorbidities, which may have an effect on the development of gout and on the choice of therapeutic agents. Ultrasound allows non invasive and quick detection of urate microcrystals aggregates. Low-dose colchicine may be the preferred treatment option in acute gout. Agents blocking interleukin 1 (canakinumab) can be used in acute gout when NSAIDS and colchicine are contraindicated or not tolerated. Xanthine-oxydase inhibitors (allopurinol, febuxostat) are used in first line to reach the therapeutic serum urate target < 60 mg/L. Other agents under investigation are urate transporter inhibitors promoting renal uric acid excretion, such as lesinurad, and the recombinant urate pegloticase to directly catabolise urate. The combined targeting of two different modes of action has superior urate lowering effects. Patient education is essential in chronic gout management to improve adherence to treatment.

The diagnosis of non-traumatic knee complaints relies on history taking and clinical examination, joint fluid analysis and imaging tests. This paper aims at reminding the benefits of conventional radiography and clarifying the role of ultrasound and magnetic resonance imaging based on illustrated case reports.