Periosteal chondroma of the humerus leading to shortening. A case report.

We report a case of periosteal chondroma of the proximal humerus with multiple cartilaginous masses extending around two-thirds of the metaphysial circumference. The humerus was short, presumably because the tumour interfered with growth at the epiphysial plate

Lymphangiomatosis of the arm with massive osteolysis. A case report.

A case of massive osteolysis of the arm is described where the typical bony lesions were associated with soft tissue lymphangiomatosis

Involvement of metal particles in loosening of metal-plastic total hip prostheses.

Four loosened metal-on-plastic total hip prostheses and associated tissues were examined. Each implant showed an uncommonly high formation of metal particles produced by wear or corrosion of the femoral stem. The granulation tissue between bone and cement was characterized by macrophages containing metal particles. Histological, histochemical, and ultrastructural investigations have been performed to assess cellular reactions to ingested metal particles. Pathogenesis of loosening in these cases is discussed in relation to the role of macrophages in bone resorption

Metal determination in organic fluids of patients with stainless steel hip arthroplasty.

In 20 stainless steel Charnley hip arthroplasties (with a follow-up of 10-13 years) nickel, chromium and manganese levels were measured in blood, plasma and urine by atomic absorption spectrophotometry. Skin patch tests for these metals, and clinical and roentgenographic results of arthroplasty were also assessed. Metal levels in organic fluids were plotted against a control population homogene- ous for age, residence and anamnestic conditions with the first, but which had never undergone a prosthesis or other metallic implant surgical procedure. Nickel levels in blood, plasma and urine, manganese levels in blood and urine and chromium levels in plasma were significantly higher in the hip prostheses popula- tion. Metal ion release from stainless steel prostheses is discussed with regard to implant failure, metal sensitivity and carcinogenesis

Selective precipitation reaction: a novel diagnostic test for tissue pathology in Atlantic Salmon, Salmo salar, infected with Salmonid Alpha-Virus (SAV3)

While investigating biomarkers for infection with salmonid alphavirus (SAV), the cause of pancreas disease (PD), a selective precipitation reaction (SPR) has been discovered in serum which could be an on-farm qualitative test and an in-laboratory quantitative assay for health assessments in aquaculture. Mixing serum from Atlantic salmon, Salmo salar, with SAV infection with a sodium acetate buffer caused a visible precipitation which does not occur with serum from healthy salmon. Proteomic examination of the precipitate has revealed that the components are a mix of muscle proteins, for example enolase and aldolase, along with serum protein such as serotransferrin and complement C9. The assay has been optimized for molarity, pH, temperature and wavelength so that the precipitation can be measured as the change in optical density at 340 nm (Δ340). Application of the SPR assay to serum samples from a cohabitation trial of SAV infection in salmon showed that the Δ340 in infected fish rose from undetectable to a maximum at 6 weeks post-infection correlating with histopathological score of pancreas, heart and muscle damage. This test may have a valuable role to play in the diagnostic evaluation of stock health in salmon

Failure of the stem in total hip replacement. A study of aetiology and mechanism of failure in 13 cases.

Thirteen failed stem of Total Hip Replacement were studied: 9 were Charnley THR from an homogeneous series, which gives an incidence of 2.4% of stem fractures with a follow-up of 9-16 years; 4 were Mueller THR. Fatigue fracture of the stem occurred by defective support of the proximal part of the femur, following resorption of the calcar. In all cases reactive tissue to foreign body particles, metal and polyethylene, was found where bone resorption occurred. In Mueller THR wear of the cup produced the large amount of polyethylene particles; in Charnley THR metal particles prevailed and corrosion of the stem is suggested to be the initiating factor

Chondrodystrophic dwarfism and multiple malformations in two sisters.

A genetic skeletal dysplasia with dwarfism, scoliosis and multiple skeletal defects was observed in two sisters. Only nine cases with similar features have been reported in the literature

Pathology of infantile cortical hyperostosis (Caffey's disease). Report of a case.

Late recurrence or a delayed form of Caffey's disease is an exceedingly rare condition of unknown cause. A 3 1/2-year-old boy is presented with delayed Caffey's disease showing unilateral involvement of maxilla and zygoma

Myositis ossificans in the newborn. A case report.

Myositis ossificans (MO) and fibroosseous pseudotumor of digits (FP) are pseudotumoral mimics of malignancy. A review of 50 cases of MO and 14 cases of FP showed that a malignant diagnosis was suggested by referring pathologists in 23% of MO and 9% of FP. The most common misdiagnosis was osteosarcoma. Awareness of the spectrum of clinicopathological features of MO and FP will help pathologists avoid misdiagnoses. A comparison of the clinicopathological features of MO and FP showed that most features were similar, but FP involved an older age group (p<0.001). MO showed a statistically significant higher tendency to contain fibrinous material (p=0.007), edematous lymphangioma-like areas (p=0.01 3), and cartilage (p=0.017) and FP to contain excessive immature osteoid (p=0.029). These differences may be related to the site of occurrenc

Best Practice in P.E. for gender equity-A review

This review wants to provide a summary of selected literature from the past 10 years on gender equity in P.E. It aims at providing an overview of the current research, while suggesting viable solutions to encourage girls to take a more active role in sport and physical activity. To ensure the respect of gender identity in education, the quality of teaching is crucial. Therefore, we argue that there is greater need for research in the field of gender equity in PE. While much research focused on how gender reproduced though pedagogical practice in PE, this review aims at analyzing how to challenge it and identify good practices. The analysis of the didactic process pointed out five dimensions (design, methodological, reflexive, organizational, relational). For each dimension, the critical aspects for education to gender equity have been identified, together with the effective practice and strategy to promote gender equity and equal education in PE. Methods and techniques useful for PE teachers were highlighted to give teachers the right tools to orientate students to sports, limit early sport dropouts and valorise the practice of all sports equally, as disciplines for both men and women. Key words: gender, physical education, didactic, curriculum, reflexive thinking, equity, methodology