Key point Periosteal reaction and bone absorption could be manifested in ulcerative colitis.

^ This little book is one of extraordinary interest. In fact, may be described as almost sensational in its iconoclastic velty. its distinguished author proves by a series of simple Periments that the commonly accepted teaching about the ? ?wth and vitality of bone depending upon the periosteum quite fallacious. tt is shown how when a sub-periosteal resection of bone is ?e> no new bone is forme...

Periosteal (juxtacortical) chondrosarcoma (PC) is a well-differentiated malignant cartilage-forming tumor arising from the external bone surface, especially in long bones. The therapy of choice is en-bloc resection and, in general, its prognosis is good. This paper reports a rare case of PC affecting the mandible of a 41-year-old man. The lesion presented as a slow-growing-painless swelling tha...

Preservation of the soft tissue is of particular importance in the care of pilon fractures. Improper soft tissue management has been attributed to high rates of nonunion, nerve injury, and failures (1–12). Traditional open reduction internal fixation (ORIF) of pilon fractures allows for direct visualization of the fracture(s) but is criticized for the large exposure and periosteal stripping. As...

Various methods have been used for soft tissue coverage of Gustilo-Anderson type IIIB open fractures. These injuries are often contaminated and, by definition, are associated with extensive periosteal stripping and inadequate soft tissue coverage. These characteristics predispose the patient to infection, delayed union, nonunion, and the likelihood of multiple surgeries to achieve durable soft ...

The gap junction protein, connexin43 (Cx43) is involved in mechanotransduction in bone. Recent studies using in vivo models of conditional Cx43 gene (Gja1) deletion in the osteogenic linage have generated inconsistent results, with Gja1 ablation resulting in either attenuated or enhanced response to mechanical load, depending upon the skeletal site examined or the type of load applied. To gain ...

Radiation-induced sarcomas are a well-recognized late complication of radiation therapy. We present a rare case of a periosteal osteosarcoma of the femur developing 10 years after radiation treatment for a soft tissue sarcoma to highlight the clinical and radiological features of this rare complication of therapy and to describe its management.

The periosteal and endocortical surfaces of cortical bone dictate the geometry and overall mechanical properties of bone. Yet the cellular and molecular mechanisms that regulate activity on these surfaces are far from being understood. Parathyroid hormone (PTH) has profound effects in cortical bone, stimulating periosteal expansion and at the same time accelerating intracortical bone remodeling...