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Objectifs Le premier objectif de ce travail prospectif et continu etait de preciser le taux de complications apres traitement chirurgical de l’hallux valgus par osteotomie scarf du premier metatarsien et raccourcissement/varisation de la premiere phalange. Le deuxieme objectif etait d’evaluer le role des gestes associes sur les metatarsiens lateraux sur la survenue des complications secondaires. Le troisieme objectif etait de comparer nos resultats a ceux de la litterature.

The characteristics of initial layer formation in alkaline bath for Zn–Ni (12–15%) alloy electrodeposition on low carbon steel plates are detected in a nanometric thickness range by electron probe microanalysis (EPMA), with both bulk sample and thin film on substrate correction procedure, glow discharge optical emission spectroscopy (GDOES) and gracing incidence X-ray diffraction (GIXRD). The Zn–Ni coatings were elaborated using either intensiostatic or potentiostatic mode. A preferential deposition of Ni, in the initial thin layer, is detected by these analyses; according to EPMA and GDOES measurements, a layer rich in nickel at the interface substrate/deposit is observed (90 wt.% Ni) and approved by GIXRD; the thin layer of Ni formed in the first moments of electrolysis greatly inhibits the Zn deposition. The initial layer depends upon the relative ease of hydrogen and metal discharge and on the different substrate surfaces involved. The electrodeposition of zinc–nickel alloys in the first stage is a normal phenomenon of codeposition, whereby nickel – the more noble metal – is deposited preferentially.

Summary The corrosion behaviour of chromated zinc with an organomineral coating, was studied by electrochemical measurements (polarization resistance and electrochemical impedance spectroscopy (E.I.S.)) in a corrosive environment for extended time periods. During this time, the impedance spectra will change as the coating properties deteriorate and corrosion occurs at the metal/coating interface The change of parameters such as R po , R p and f b are very useful for the analysis of coating damage.

Open fractures of the shoulder are extremely rare, and their treatment is a major challenge for surgeons. Only cases encountered in military settings have been reported thus far. Such fractures are often the result of ballistic trauma, which causes extensive damage to both bony and soft tissues. Since these injuries are associated with a high risk of infection and the presence of comminuted fractures, external fixation is necessary for repair. Use of external fixators and revascularization techniques has reduced the number of cases requiring shoulder amputation or disarticulation. Injury to the proximal extremity of the humerus, acromion, and clavicle further complicates the treatment. No published studies have described the assembly of external fixators for fractures in the scapular region with significant bone loss. In addition, no cases have been described in civilian settings. However, with an increase in urban violence and the traffic of illegal arms, civilian surgeons are now encountering an increasing number of patients with these injuries. In this report, we not only present a rare case of floating shoulder injury in a civilian setting but also provide an overview of the existing treatment strategies for this type of trauma, with special focus on the use of external fixators in elective shoulder arthrodesis and on military cases.

We report the case of a young woman hospitalized for a chronic appendicular syndrome. The histological examination of the resected specimen revealed a rare tumor: tubulovillous adenoma, discovered in 0.02% of all appendectomy procedures. Treatment is most often limited to appendectomy, but in the event of incomplete excision or associated adenocarcinoma, right hemicolectomy may be required. After surgery, a follow-up colonoscopy is recommended due to the higher risk of second gastrointestinal neoplasms in patients with appendicular tumors.