Dinuclear CoYvs. tetranuclear CoY complexes: the effect of increasing molecular size on magnetic anisotropy and relaxation dynamics.

A new CoII2YIII2 complex with the formula [{Co(μ-L)Y(NO3)}2(μ-CO3)2]·2CH3OH·2H2O (where H2L = N,N',N''-trimethyl-N,N''-bis(2-hydroxy-3-methoxy-5-methylbenzyl)diethylenetriamine) has been prepared and its structure solved by single-crystal X-ray diffraction. The tetranuclear structure is formed by the connection of two [Co(μ-L)Y(NO3)] dinuclear units through two carbonate bridging ligands, which exhibit a μ3-κ2-O,O':κ-O:κ-O'' tetradentate coordination mode. The CoII ion exhibits a slightly distorted octahedral CoN3O3 coordination environment.

Hip arthroscopy for the treatment of femoroacetabular impingement: a comparative study between the classic and the outside-in access.

Purpose: To compare the functional outcomes of patients undergoing arthroscopic surgery for the treatment of femoroacetabular impingement (FAI) performed with either the classic or the outside-in access to the hip.

Methods: Data regarding patients arthroscopically treated for FAI from January 2009 to June 2013 were retrospectively reviewed and compared regarding the type of access.

Results: 101 hips (91 patients) with a minimum of 12 months follow-up (mean 22 months, range 12-40 months) were included.