Avascular necrosis of the talus after severe ankle injury is well known. Avascular necrosis of talus is extremely rare in juveniles. However, it has been controversial whether the incidence of AVN after fracture of talus is higher in adult than in juveniles. It is possible that the immature talus can be more susceptible to circulatory. As treatment of avascular necrosis of the talus, non-operat...

BACKGROUND Avascular necrosis after arthroscopic surgery of the knee has already been published. The purpose of this article is to report on the frequently misdiagnosed entity of osteonecrosis of the medial tibial plateau. CASE PRESENTATION Charts and radiographs of a consecutive series with isolated medial tibial plateau osteonecrosis were analyzed. The criterion for inclusion was the absenc...

We present a case of osteonecrosis of femoral head (ONFH) that occurred after stent angiography of femoral artery for the treatment of arteriosclerosis obliterans (ASO) of left inferior limb in a 76-year-old woman. No case of late collapse of femoral head as a complication of endovascular procedure such as stent placement has been previously documented. We considered that ONFH occurred after de...

INTRODUCTION The most serious complication of the septic arthritis of the hip in childhood and especially in newborns is the avascular necrosis of the femoral head. The aim of the study was evaluation of residual deformity after neonatal septic arthritis of the hip in a boy aged thirteen years. CASE PRESENTATION A 13-year-old, white male, was operatively treated by intertrochanteric osteotomy...

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...

Chronic myeloid leukemia (CML) is a myeloproliferative neoplasm characterized by the presence of the Philadelphia (Ph) chromosome resulting from the reciprocal translocation t(9;22)(q34;q11). The molecular consequence of this translocation is the generation of the BCR-ABL fusion gene, which encodes a constitutively active protein tyrosine kinase. The oncogenic protein tyrosine kinase, which is ...

Naturally occurring avascular necrosis in the femoral head of SHR, which resembles Perthes' disease in man, was observed histologically. Of 96 epiphyses from 48 SHR, 34 epiphyses from 27 SHR showed a hallmark of necrosis during the period of 10 to 40 weeks after birth. The complete necrosis over the whole epiphyseal nucleus without revascularization was seen at the age of 10 and 15 weeks. Then ...

26 consecutive patients (37 hips) with avascular necrosis (AVN) of the femoral head treated surgically at our institution from 1999 to 2008 were reviewed. The aims of the study were to evaluate the risk factors associated with AVN in HIV positive and HIV negative individuals, and assess early response to total hip replacement (THR) surgery in HIV positive and negative patients. There were 15 ma...

An association between urate gout and chondrocalcinosis has been suggested in several studies, but the situation remains ill-defined because of lack of appropriate controls, small numbers of patients studied, or retrospective investigation. An association has also been claimed between gout and avascular necrosis of the femoral head. 138 patients with gout and 142 non-gouty control subjects were...