Heterotopic ossification in total hip arthroplasty. The influence of the approach

From 1980 to 1990, 64 cases of Lumbar canal Stenosis have been recorded and operated on at the neurosurgical clinic. The male sex is prevailing and the breakdown by age groups showed a preponderance of the age sections between 31 and 45 and 46 and 60 years. The sciatic pain was the most frequent starting symptom. As far as the physical signs are concerned, the areflexy of the tendon predominates. The saccoradiculography has established the diagnosis in most of the cases. The laminectomy associated with another technique has permitted to obtain the best result of the treatment. With the advent of the T scan, a better estimation of the lumbar canal will be possible, so as to replace the laminectomy by a more adaptable technique: the remeasurement of the lumbar canal.     

Mössbauer spectroscopy of titanium-substituted iron garnets

The Mössbauer spectroscopy of polycrystalline Y_3?x Ca _x Fe_5?x Ti _x O₁₂ (x=0·2, 0·5, 0·7) garnets has been studied at room temperature. The hyperfine fields both at the octahedral and tetrahedral sites decrease with increasing titanium content. The hyperfine fields both ata andd-sites are linearly proportional to magnetization. The quadrupole splitting fora-site shows no dependence on Ti content while the quadrupole splitting ford-site increases slightly withx. The results are explained on the basis of lattice distortion due to Ti substitution ona-site.     

Relative value of peripheral blood, secretion and tissue eosinophilia in the diagnosis of different patterns of allergic rhinitis

Eosinophil count in peripheral blood, nasal secretion and nasal mucosa were studied in 20 controls and 38 patients with different patterns of allergic rhinits. Secretion and tissue eosinophilia were pathologically high in a greater number of patients than peripheral blood eosinophilia. This trend was seen in all patterns of allergic rhinitis but was more evident in seasonal allergic rhinitis. The conclusion was reached that examination of local site and local secretions for eosinophilia is helpful in the diagnosis and differential diagnosis of allergic rhinitis.