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Yeungnam Univ J Med > Volume 15(1); 1998 > Article
Yeungnam University Journal of Medicine 1998;15(1):164-172.
DOI:    Published online June 30, 1998.
The complications of the Graf stabilization for lumbar disc herniation with posterior instability.
Joo Tae Park, Young Shik Shin, Jeong Ho Yang, Kang Woo Min
Department of Orthopaedic Surgery, Pohang St. Mary's Hospital, Pohang, Korea.
The Graf stabilization has been introduced in treating lumbar spinal disorder associated with posterior instability. This study reviewed some problems of the Graf instrumentation as a soft stabilizer. The purpose of this study is to analyse the problems of the soft stabilization in spinal instability. We reviewed 145 cases which were operative treatment using the Graf instrument for lumbar spinal disorder associated with posterior instability at our department from May, 1991 to Dec, 1995. The mean follow up periods was 29 months ranging from 24 months to 6 years 8 months. Of the 145 cases, 22 cases were showed the problem. The diagnostic method were simple x-ray, flexion-extension lateral stress view and CT scan. Results were as follows : Adjacent segmental instability was 10 cases(6.9%), disc space narrowing was 8 cases(5.5%), screw loosening was 3 cases(2.1%) and breakage of the Graf band was 1 case(0.6%). The problems of the soft stabilization were adjacent segmental instability, disc space narrowing, screw loosening, and breakage of the Graf band. But the rate of adjacent segmental instability and disc space narrowing was lower than other lumbar spinal instrumentation.
Key Words: Lumbar disc herniation, Posterior instability, Soft stabilization, Problems
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