The major cause of hip dislocations is motor vehicle collisions. A great deal of force is required to dislocate a hip, and thus associated injuries are common. Up to 88% of hip dislocations will be accompanied by an associated fracture. Patients with hip dislocations have about a 25% risk for osteoarthritis and a 20% risk for avascular necrosis. In addition, sciatic nerve injuries occur in appr...

BACKGROUND Prognosis of traumatic osteonecrosis of femoral head in children is poor for either conservative treatment or surgical intervention. Intravenous bisphosphonate is an expecting medication to reduce femoral head resorption and to prevent femoral head collapse after traumatic osteonecrosis. This mechanism will reduce development of osteoarthritis and disability in the future. OBJECTIV...

The article is based on the importance of applying means and methods specific to physical therapy in improvement Perthes disease. condition known as Perthes, Legg-Perthes, or Legg-Calve-Perthes disease an avascular osteonecrosis epiphysis femoral head. It assumed that through a kinetotherapeutic program appropriate patient's particularities, mobility coxofemoral joint will remain within normal ...

BACKGROUND A major cause of osteonecrosis of the femoral head is interruption of a blood supply to the proximal femur. In order to evaluate blood circulation and pathogenetic alterations, a pig femoral head osteonecrosis model was examined to address whether ligature of the femoral neck (vasculature deprivation) induces a reduction of blood circulation in the femoral head, and whether transphys...

Osteonecrosis or avascular necrosis (AVN) is a pathologic process that results from a critical decrease of blood supply to the bone and elevated intraosseous pressure [1]. While the pathogenic process is not clear, it is believed that osteonecrosis is the final common pathway of traumatic and non-traumatic insults and that it impairs blood circulation to the femoral head. Subsequently, interrup...

Avascular necrosis (AVN) of the femoral head is an emerging complication in HIV infected patients. It has been suggested that the increased incidence of AVN in this population may be caused by an increased prevalence of predisposing factors for osteonecrosis, including protease inhibitors, hyperlipidemia, corticosteroid use, alcohol and intravenous drug abuse. The aim of this study was to asses...

Objective The purpose of this study is to evaluate the performance of dynamic hip screw for the treatment of dislocated femoral neck fractures in young patients, focusing on osteonecrosis. Methods A series of 53 patients with less than 55 years of age were retrospectively evaluated. All patients had dislocated femoral neck fractures (Garden III or IV) and were treated with DHS. Ficat's stagin...

The etiology of bisphosphonate-related osteonecrosis of the jaw is unknown but was initially postulated to be mediated by bisphosphonate accumulation within the jaws, resulting in avascular necrosis. Bisphosphonates may not be the primary cause. Actinomyces are an underrecognized agent in pathogenesis, and timely actinomycosis-specific treatment may improve outcome.

Although rare, avascular necrosis of bone is a serious and incapacitating complication seen in children with acute lymphoblastic leukemia receiving high dose steroids. Here we present a 16 year-old girl who developed bilateral knee and right ankle avascular osteonecrosis one year after intensive chemotherapy for medium risk acute lymphoblastic leukemia. Indirect curettage of necrotic tissue and...