Ioannis D. Papanastassiou

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To determine if differences in safety or efficacy exist between balloon kyphoplasty (BKP), vertebroplasty (VP) and non-surgical management (NSM) for the treatment of osteoporotic vertebral compression fractures (VCFs). As of February 1, 2011, a PubMed search (key words: kyphoplasty, vertebroplasty) resulted in 1,587 articles out of which 27 met basic(More)
Single-stage posterior corpectomy for the management of spinal tumors has been well described. Anterior column reconstruction has been accomplished using polymethylmethacrylate (PMMA) or expandable cages (EC). The aim of this retrospective study was to compare PMMA versus ECs in anterior vertebral column reconstruction after posterior corpectomy for tumors(More)
Extreme lateral interbody fusion (XLIF) is a relatively new procedure for the treatment of degenerative disc disease avoiding the morbidity of anterior approaches. Ipsilateral L2-5 nerve root irritation and injury are well-described complications. We describe two patients with contralateral extremity symptoms, not reported so far. In the first patient the(More)
STUDY DESIGN Retrospective comparative study and technical note. PURPOSE To determine if there is a difference in clinical and radiographic parameters between unilateral and bilateral kyphoplasty in a uniform cancer population and to stress the importance of preoperative planning. OVERVIEW OF LITERATURE While unipedicular kyphoplasty is gaining(More)
INTRODUCTION Plexiform schwannoma is one of the least common variants of schwannoma. It is usually found on the trunk, head, neck and upper extremities. Most reported cases are small tumors, less than 2cm in maximum diameter, arising from superficial nerves. Trauma and neurofibromatosis type 2 are well-recognized risk factors for plexiform schwannoma. It is(More)
BACKGROUND Small case series suggest that preoperative transcatheter arterial embolization minimizes bleeding and facilitates surgery for hypervascular metastatic bone tumors. However, control groups would make our confidence in clinical recommendations stronger, but small patient numbers make prospective trials difficult to conduct on this topic. (More)
PURPOSE OF REVIEW To review the current status of vertebral augmentation procedures (VAPs) in the management of symptomatic vertebral compression fractures (VCFs) in cancer patients. RECENT FINDINGS The natural history of VCFs in the cancer setting is presumably different from the one seen with osteoporotic fractures. Factors contributing to the poor(More)
BACKGROUND The location of osteosarcoma in the metaphysis as well as the age of the patients during the most rapid tumour growth suggest that factors related to skeletal growth are involved in the pathogenesis of this tumour. In this aspect this study aims to detect somatostatin receptors in human osteosarcomas and correlate this finding with the clinical(More)
PURPOSE OF REVIEW In metastatic spine disease, technologic advancements, neurologic recovery, pain relief, cost-effectiveness, and health-related quality of life have all strengthened surgery's and radiation's role in its management.We evaluated different surgical approaches to the spine and the multimodality treatment in the management of these cases. (More)
STUDY DESIGN Surgical technique article with retrospective case series. SUMMARY OF BACKGROUND DATA Sacral insufficiency fractures are commonly encountered in oncologic patients and constitute a cause for persistent lower back and pelvic pain. OBJECTIVE The aim of this study is to describe the modified technique of navigated percutaneous sacroiliac (SI)(More)