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FATE OF VERY SMALL ASYMPTOMATIC STAGE-I OSTEONECROTIC LESION : JBJS

At the time of final follow-up, the twenty-nine hips with collapse had symptoms of intractable pain and required surgery. Figure 7 The radiograph shows a 3-year postoperative AP of a cemented allograft prosthesis composite for an osteosarcoma. Two patients one with giant cell tumor of bone and one with giant cell tumor of bone accompanied with aneurysmal bone cyst presented with pathologic fractures; one patient with malignant fibrous histiocytoma had a prior operation with Allograft-prosthesis complete allograft reconstruction fixed with a dynamic hip screw; the others had no treatment before admission.

Up to now, in our series, there has been no infection, dislocation, or chronic allergic reaction cases. Inwe began a prospective study to detect collapse in asymptomatic hips with a very small stage-I osteonecrotic lesion in the femoral head. The diagnosis of collapse for two patients was made only on a computerized tomography scan at the most recent follow-up evaluation.

Figure 1 The radiograph shows the preoperative AP of a chondrosarcoma. Limb salvage following resection of a tumor in the proximal part of the humerus poses many challenges. But only if the exact indications for cemented APC arthroplasty are understood, correct perioperative procedure is complied with, and complications are controlled, can cemented APC reconstruction be proposed as the better alternative.

APC is made of a revision-type prosthesis cemented into the skeletal allograft to which the remaining soft tissue sleeve can be biologically fixed.

Trochanteric union was defined as a lack of migration of the greater trochanter, with trabecular Dating creative person migration or a gap of more than 1 cm was regarded as nonunion.

Table 2 The follow-up results of 28 patients Abbreviations: But rare studies have focused on the indications, perioperative management details, and complications control. This hip showed good stability at the last follow-up examination. Reconstruction of the segmental defects poses a tremendous challenge to the orthopaedic surgeons.

However, the early complications like instability, infection, prosthetic breakage and fixation failure have been extensively reported in several literatures. All the allograft—host bone junctions were filled with granular allogeneic spongy bone and covered by the periosteal cuff.

The black arrow indicates the allograft host—bone nonunion because of the cement in the junction. In addition, the benefits of using APC include restoration of bone stock, provision of a biologic anchor for the attachment of tendon, biologic fixation, ease of revision, load sharing after union, and the ability to precisely adjust graft length.

Therefore, after the osteotomy, all the patients underwent the frozen biopsy Allograft-prosthesis complete the medullary tissues of the distal femur.

Statistical analysis The Wilcoxon signed-rank test was employed for comparison of two related nonparametric data. Figure 3 The radiograph shows an 8-year postoperative AP of a cemented allograft prosthesis composite for a chondrosarcoma IA.

Nevertheless, we could see some meaningful trends. Editor who approved publication: Clinical evaluation Functional results were evaluated in 25 patients having a follow-up of at least 2 years.