Kienbock's disease, which is an idiopathic osteonecrosis and collapse of the lunate bone, is an uncommon disease in children. This report describes a case of an 11-year-old girl, who presented with avascular necrosis of lunate bone confirmed by radiographic and magnetic resonance imaging evidence. After a short period of casting, the case was fully recovered within one year. The signal change w...

Cover Picture: Radiograph at six months after internal fixation of the fracture. The Austin-Moore’s pins had crossed the epiphyseal line at the time of the operation. The fracture line is still visible but the Moore’s pins are still holding the fracture. The avascular necrosis involves the entire femoral head. (Refer to page 205-207) “In its beginning the malady (tuberculosis) is easier to cure...

According to Ambroise Pare, “there is this danger in the dislocation of the hip, that either the bone cannot be put into the place again, at least unless with much trouble, or else, being put in, that it will presently fall out again.” These difficulties have been largely overcome, only to be replaced by the problem of avascular necrosis. Mason (1954) reported one case of traumatic dislocation ...

The purpose of this study was to assess the effect of timing of large fragment fixation in patients with Pipkin type-I fractures. Patients with Pipkin type-I fractures from the authors' trauma center were prospectively observed between July 2007 and July 2010. Fragments that constituted more than one-fourth of the femoral head were included. Thirty-six patients were equally randomized to underg...

Of 24 intertrochanteric osteotomies for avascular necrosis of the femoral head, 22 were followed up for an average of 63 months. Sixteen of the 22 cases had good or excellent results, including 5 of the 6 cases with Stage II disease and 11 of the 16 with Stage III changes. Success seemed to be inversely related to the size of the lesion. There were six major orthopaedic complications, but despi...

We studied the prognostic value of MRI in 32 radiographically normal, asymptomatic hips in 25 patients at risk of osteonecrosis from glucocorticoids or alcoholism. The early findings were band-like hypointense zones on spin-echo images. No operations were performed. Life-table survival curves showed that femoral heads in which the hypointense zone traversed the middle portion of the head were m...

This article presents the history and development of as well as the results from the various techniques of vascularized bone grafting for the treatment of osteonecrosis (ON) of the femoral head. The authors have treated more than 2600 patients who had femoral head ON, using a vascularized fibular graft by way of an intraosseous approach. The results from this vast experience are summarized and ...

Osteonecrosis is a common disorder that may go clinically unrecognized or may result in the collapse of the architecture of bone, determining severe anatomic alterations of the involved site. Osteonecrosis is not a specific disease entity, but rather the result of a number of conditions ultimately leading to an impairment of blood supply to the bone tissue, although there is evidence that modif...

In this paper we wish to emphasise the danger of avascular necrosis of the capital femoral epiphysis arising as a late complication of osteomyelitis of the intertrochanteric region. This necrosis is primarily aseptic and is believed to follow interference with the vulnerable vascular channels supplying the capital femoral epiphysis rather than spread of infection into the joint. If, however, th...

Insufficient blood flow to the proximal femur causes osteonecrosis of femoral head, which is known as head avascular necrosis (AVN). The underlying pathogenesis unclear, risk factors are likely influence microcirculation somewhat, but this has not been confirmed by research. In more than 75% cases, affects head. Methods: From August 2019 March 2022, 4 patients with FBAN were analyzed retrospect...