Chondromyxoid fibroma is a rare benign primary bone tumor composed of immature myxoid mesenchymal and cartilaginous tissue. It has a predilection for the metaphyseal area of long tubular bones of lower extremities in young patients. Its occurrence in calcaneus is very rare and few cases of calcaneal involvement have been reported in literature. This mass can mimic other benign and malignant bone tumors owing to its variable histologic features. A case report is demonstrated, discussing the problems of misdiagnosis. A brief review of the literature is presented.

Fracture of femoral neck is a serious complication of transient hip osteoporosis during pregnancy. A case of atraumatic bilateral femoral neck fracture was reported. The diagnosis was made two months after delivery. The patient refused surgery. Spontaneous healing was noted firstly on the right hip and secondly on the left.

This perspective appraises the pathology, etiology, clinical presentation and therapy of osteoporosis, in particular for men, and focuses on implications for oral healthcare

Osteoarthritis, a disabling disease, commonly believed to originate in the articular cartilage of freely moving joints, affects the entire joint, including muscle. This brief highlights the current research being published in this respect, an area of research that is not well documented when compared to related studies of cell biology, tissue engineering, and molecular in vitro studies, among others. To this end, to update a prior analysis, PUBMED, and Web of Science indices were searched for information specifically published between Jan 2015 and April 2017) using the key words: Osteoarthritis and Muscle, among others. Results show, a reasonable body of current science based evidence continues to focus on one or more aspects of muscle structure and/or function in the context of furthering our understanding of the pathogenesis of osteoarthritis disability. Second, while not conclusive, a variety of changes in muscle quality, function, and/or estimates of muscle bulk appear to correlate temporally with features of the pathological processes and extent of disability. Third, well designed carefully construed treatments directed towards improving muscle structure and function in those with symptomatic osteoarthritis appear to hold more promise than not for potentiating favorable disease outcomes. Conversely, failure to identify what component of the muscle system is specifically implicated in the osteoarthritis disease process may produce more negative clinical outcomes than not.

The term hemangioendothelioma is the designation for vascular tumors that have a biologic behavior intermediate between a hemangioma and a conventional angiosarcome; it is associated with a significant risk of recurrence and metastasis.

Epithelioid hemangioendothelioma is a rare vascular tumor; it represents less than 1% of all the vascular tumors. Although it can occur at almost any age, it rarely occurs during childhood, affecting most of the time the liver, the lung, and soft tissues and bones. Because of its heterogeneous presentation, it is often misdiagnosed and not suitably treated.

We report a rare case of hemangioendothelioma epitheloid at the right calcaneus. Through this case and the literature, we will review the problems of differential diagnosis.