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Abstract book 6th RMS 16.indd

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inclusion criteria with a mean age of 48<br />

years (20-72). 20 cases were long bone<br />

non-unions (13 femurs and 7 tibias) and<br />

10 cases were bone defects (6 tibias and 4<br />

femurs). The mean length of bone defect<br />

was 6cm (4-10cm). All bone defect cases<br />

were of septic origin. The mean time of<br />

previous re-operations was 2.6 (1-5). All<br />

cases underwent revisions of fixation<br />

(16 cases of broken metal work). In the<br />

non-union group, all patients united at a<br />

mean time of 5 months (3-7). The mean<br />

time of bone restoration with the induced<br />

membrane technique for the bone defect<br />

cases was 7.5 months (5-9). Post-operative<br />

complications included 2 superficial<br />

infections, one DVT, one PE and one blade<br />

plate failure (femoral non-union) requiring<br />

revision blade plate and anterior femoral<br />

plate. At the final follow up all patients<br />

were able to ambulate with painless full<br />

weight bearing.<br />

Conclusion: For difficult recalcitrant<br />

long bone non-unions and bone<br />

defects the ‘diamond concept’ restores<br />

optimum mechanical and biological<br />

environment facilitating fracture healing<br />

and restoration of bone defects. This<br />

approach can minimise the risk of<br />

reoperations and should be considered in<br />

the surgeon’s armamentarium in complex<br />

non-union cases and bone defects.<br />

296<br />

Correct Screw Positioning in MIS<br />

Trauma Stabilization<br />

Arnold J Suda MD*, Stefan Matschke, Martin<br />

Adams, Marco Tinelli<br />

* Dr. med. univ. Consultant Orthopaedic and<br />

Trauma Surgeon BG Trauma Center Ludwigshafen<br />

(Germany)<br />

arnold@drsuda.com<br />

Objectives: Minimal invasive spine surgery<br />

in trauma patients is challenging. A short<br />

operation time and a perfect positioning of<br />

pedicle screws is demanded. In this study<br />

we show for the first time, that the new<br />

VIPER®2 Minimally Invasive Pedicle Screw<br />

System allows both.<br />

Methods: Between may 2009 and march<br />

2011, 121 patients (131 fractures) with<br />

fractures between Th 3 and L 5 were<br />

treated with the VIPER®2 Minimally<br />

Invasive Pedicle Screw System. The most<br />

common fracture type was A3. We<br />

treated 52 females and 69 men, the mean<br />

age at operation time was 56.7 years.<br />

Postoperatively, all patients were examined<br />

using a CT scan and the screw-positions<br />

have been controlled.<br />

Results: In 61 patients, ventral stabilization<br />

was additionally performed, in 33<br />

patients, vertebroplasty or kyphoplasty<br />

was performed. 15 patients underwent<br />

laminectomy. Mean operation time was 80<br />

minutes. No patient developed any new<br />

nervous debility postoperatively. 5 patients<br />

had neurological deficits preoperatively, in<br />

one patient we saw remission after surgery.<br />

678 screws were placed. In the CT scan,<br />

we found 15 screws (2.2%) in suboptimal<br />

position. Because of no neurologic debility,<br />

no revision was performed because of<br />

the screw´s position. In one patient, septic<br />

revision without removal of the screws was<br />

performed.<br />

Conclusion: With this System, spinal<br />

fractures can be treated in a short operation<br />

time with percutaneous stabilization and a<br />

correct positioning of the pedicle screws in<br />

almost 98%. In our study, no screw was so<br />

much malpositioned that revision surgery<br />

would have been necessary.<br />

297<br />

Pelvic Fracture Overview<br />

Said Abdul Majeed MD (Jordan)<br />

Pelvic fractures are life threatening injuries<br />

that deserve all attention & remain a<br />

permanent challenge<br />

To all concerned. History of pelvic<br />

fractures management Is very interesting &<br />

impressive .It is a long march surprising us<br />

all the time with new ideas & achievements<br />

from the days when the “ hammock<br />

was the best treatment orthopedic<br />

surgeons could offer for patients with<br />

unstable pelvic fractures (who could die<br />

on the hammock!) ,through the days of<br />

emergency external pelvic fixation( saving<br />

so many lives) & ending with the days of<br />

advanced definitive surgical treatment<br />

combining external & internal fixation<br />

using a huge armamentarium . Having<br />

so many methods of pelvic treatments,<br />

the need arose for a system to accurately<br />

assess the pelvic functions. This made me<br />

introduce a grading scoring system to<br />

assess pelvic functions . This was published<br />

in 1989 JBJS-B (71)<br />

www.jrms.gov.jo<br />

154

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