Previously, a computer-based navigation system has not been used routinely for en-bloc resection of sacral tumors. In order to improve the accuracy of tumor resection, O-arm navigation was used to join anterior and posterior osteotomies during an en-bloc resection of a sacral Ewing's sarcoma. This case study describes the technique for en-bloc resection of a sacral Ewing's sarcoma guided by O-a...

Pr imary intraspinal pr imit ive neuroecto dermal tumors (PNETs) are rare. We report a case of sacral PNET with review the literature. A 15 -yearold boy presented w ith progres sive lumbar area pain, lower leg numbness and neurogenic bladder. Preoperat ive magnet ic resonance imag ing revealed a sacral tumor with epidural, presacral, and sacral bone extensions. An urgent operation was performed...

AIM Sacral stress fractures are rare fractures presenting themselves with low back and groin pain. These fractures can be treated effectively using sacroplasty. MATERIAL AND METHODS The clinical and radiological data of three cases that underwent sacroplasty for sacral stress fractures were reviewed. The pain severity was assessed using the VAS system. The radiological investigation was perfo...

Chordoma is a primary sacral neoplasm of ectodermal origin and makes up %1- 4 of all primary bone tumors. It is usually present on the midline cerebrospinal axis and the most common locations are the spheno-clival region and the sacrum. The treatment of primary sacral tumors represents a challenge because of a large tumor mass at presentation and a hemorrhage risk in surgery. Sacral tumors may ...

Neuromuscular stimulation via the sacral nerve roots is proposed for prevention of ischial pressure ulcers following a spinal cord injury (SCI). Acute effects of sacral functional magnetic stimulation (FMS) on seat interface pressure changes were investigated in five nondisabled volunteers. Similar effects were demonstrated with functional electrical stimulation in people with SCI who used a sa...

Tarlov or perineural cysts are nerve root cysts found most commonly at the sacral spine level arising between covering layers of the perineurium and the endoneurium near the dorsal root ganglion and are usually asymptomatic. Symptomatic sacral perineural cysts are uncommon but sometimes require surgical treatment. A 69-year-old male presented with pain in the buttock. He was diagnosed as having...

A visual examination of 1764 Oxford schoolchildren for scoliosis was followed by low-dose radiography of the spine in those who showed evidence of asymmetric body topography; radiography was repeated a year later to assess progression. Forty-four children had curves of 10 degrees or more. Two had a congenital abnormality and the remaining 42 were classified according to the type of curve: sacra...

Sacral tumours often present surgical resection and reconstruction challenges. Wide resections result in large sacral defects and neoadjuvant radiotherapy impairs wound healing. The wounds need to be covered with bulky, well-vascularised, healthy tissues. We present 2 cases where large sacral defects were reconstructed following tumour resection. Both defects were reconstructed with inferiorly ...

Ultimate limits of an open pit, which define its size and shape at the end of the mine’s life, is the pit with the highest profit value. A number of algorithms such as floating or moving cone method, floating cone method II and the corrected forms of this method, the Korobov algorithm and the corrected form of this method, dynamic programming and the Lerchs and Grossmann algorithm based on grap...

Currarino syndrome is a congenital disorder, consisting of a triad of anomalies including an anorectal malformation, sacral anomaly, and a presacral mass. Anterior sacral meningoceles are the most common presacral mass. A young child presented to our institution with an unrepaired anorectal malformation and a large anterior sacral meningocele. We describe how the anterior meningocele affected t...