Hydride mobility in trinuclear sulfido clusters with the core [Rh3(μ-H)(μ3-S)2]: molecular models for hydrogen migration on metal sulfide hydrotreating catalysts.

The treatment of [{Rh(μ-SH){P(OPh)(3)}(2)}(2)] with [{M(μ-Cl)(diolef)}(2)] (diolef=diolefin) in the presence of NEt(3) affords the hydrido-sulfido clusters [Rh(3)(μ-H)(μ(3)-S)(2)(diolef){P(OPh)(3)}(4)] (diolef=1,5-cyclooctadiene (cod) for 1, 2,5-norbornadiene (nbd) for 2, and tetrafluorobenzo[5,6]bicyclo[2.2.2]octa-2,5,7-triene (tfb) for 3) and [Rh(2)Ir(μ-H)(μ(3)-S)(2)(cod){P(OPh)(3)}(4)] (4).

[Poliostotic fibrous dysplasia with affectation of cervical rachis].

The fibrous dysplasia is a benign although progressive dysfunction, in which a gene mutation originates the production of fibrous disorganized bony matrix. The bony tissue is replaced by bony tissue in expansion (amorph conjuntival tissue) that produces bony deformities in some patients, pain, pathological fractures or deambulation disorders. The diagnosis is important since ocasionally the first symptom is the fracture.

[Salvage surgery treatment in osteosarcoma of the fibula with seventeen years survival].

Introduction: Osteosarcoma is the most frequent primary bony tumor with two picks of incidence, one around the 15 years (adolescents) and another in old people.

Clinical Case: Patient of 14 years with pain clinic in proximal fibula. It was diagnosed by radiological studies and biopsy of located osteosarcoma with infiltration of cortical and periostium and extension toward fibula epiphysis.

[Pseudoarthrosis of acromion due to politraumatism. Treatment with autologus graffting intercalar of iliac crest].

The fractures of the scapula are not very frequent, an incidence around the 0,4 and 1% of the fractures that affect the upper limb. The acromion fracture means the 7% of the fractures that affect to the scapula. They usually appear in politraumatized patients with more serious lesions that can mask them and postpose this way their diagnosis and treatment.

[Bilateral rupture of the quadriceps tendon].

Simultaneous, bilateral, and spontaneous rupture of the quadriceps tendon is a very rare injury. Individuals with this injury are usually predisposed by chronic renal disease with secondary hyperparathyroidism, gout, diabetes, and lupus erythematosus. Often, primary diagnostic confusion can lead to a delay in treatment.

[Self-expanding cup CLS. 10 years results].

The CLS acetabular cup, is a hemispherical, self-expanding cementless cup. The CLS cup initial stability is achieved by expansion-shell. Secondary the bone, which grows on the surface of the titanium, over the durable stability.

Dioxygen activation by an osmium-dihydride: preparation and characterization of a d4 square-planar complex.

Exposure of OsH2Cl2(PiPr3)2 to air or bubbling with pure O2 affords the dioxo-Os(VI) compound OsO2Cl2(PiPr3)2 as result of a direct O=O double bond activation reaction. This Os(VI) species is reduced in the presence of n-BuLi to the novel dioxo-Os(IV) derivative OsO2(PiPr3)2, a rare example of a d4 square-planar compound.