ABSTRACT
Objective To compare the short-term clinical effect of K-Rod pedicle dynamic fixation system and lumbar fusion for multi-ple segmental lumbar degeneration.Methods Between January 2010 and October 2012,56 patients with segmental lumbar degeneration who were accepted K-Rod pedicle dynamic fixation system and posterior lumbar interbody fusion were retrospectively reviewed.The 56 patients were divided into K-Rod and fusion group,28 patients with K-Rod pedicle dynamic fixation system and 28 cases with traditional lumbar fusion and internal fixation.Clinical assessments were based on comparion of Oswestry disability index score ,visual analogous scale (VAS),im-provement rate of low back pain,postoperative lumbar spine X-ray,average operation time and intraoperative blood loss of two groups.Results All of 56 cases were followed up for 12 to 24 months,the difference of Oswestry disability index score and VAS between two groups were not statistically significant(P >0.05),but the difference of average operation time,blood loss and the average length of stay(ALOS)were statis-tically significant(P <0.05),the K-Rod group was superior to the fusion group.Conclusion In the treatment of multiple segmental lumbar degeneration both K-Rod pedicle dynamic fixation system and traditional lumbar fusion can obtain satisfactory short-term clinical effect,but the K-Rod pedicle dynamic fixation system has advantages of less intraoperative blood loss,shorter operation time,postoperative small effects on lumbar spine mobility.
ABSTRACT
Objective Currently there is little study on the K-Rod pedicle fixation system in the treatment of far lateral lum-ber disc hernaition with multiple segment degeneration.The study was to compare the short-term efficay of K-Rod pedicle dynamic fixa-tion system and lumbar fusion for far lateral lumber disc herniation with multiple segment degeneration. Methods Retrospective a-nalysis were made on 56 patients with lumbar intervertebral disc herniation with multiple segment degeneration who received operation in General Hospital of Shenyang Military Region from January 2010 to October 2012.They were divided into K-Rod group (combined treatment of lumbar fusion and adjacent degenerative segment unfusion) and traditional fusion group according to different treatments. 28 patients in K-Rod group were treated with K-Rod pedicle dynamic fixation system and 28 cases in traditional fusion group were trea-ted with traditional lumbar fusion and internal fixation.Comparative analysis were made on the indexes before and after operation be-tween two groups, including Oswestry disability index, visual analogous scale (VAS) ,improvement rate of low back pain, postopera-tive lumbar spine X-ray, operation time, intraoperative blood loss and postoperative average length of stay. Results 12 to 24 months follow-up were achieved on 56 cases.The Oswestry function score and visual analog scale for both groups were improved significantly at 12 months after operation, and the difference was of statistical significance (P0.05), while the average operation time ([119.6 ±14.2] min vs [155.5 ±17.5]min), the average blood loss ([235.5 ±32.5] mL vs [367.5 ±29. 5] mL), the average length of stay (ALOS) ([10.5 ±2.2] vs [14.2 ±2.6]d) between K-Rod group and traditional fusion group were of significant difference(P<0.05). Conclusion In the treatment of far lateral lumber disc hernaition with multiple segment degeneration, the K-Rod pedicle dynamic fixation system atrributes to less intraoperative blood loss, shorter operation time and little postoperative effect on lumbar spine mobility.
ABSTRACT
Objective To discuss the short-term clinical effect of K-Rod pedicle dynamic fixation system for multiple segmental lumbar degeneration. Methods From January 2010 to October 2012,28 patients with multiple segmental lumbar degeneration who were accepted K-Rod pedicle dynamic fixation system were retrospectively reviewed. The short-term clinical effect were based on Oswestry disability index score,visual analogous scale ( VAS) ,improvement rate of low back pain,postoperative lumbar hyperextension, hyperbend X-ray film lumbar ROM value ( lumbar flexion mobility) ,average operation time, intraoperative blood loss. Results All of 28 cases were achieved 12 ~24 months follow-up,the difference of Oswestry disability index score and visual analogous scale ( VAS) between 12 months postoperatively and preoperatively were statistically significant,the improvement rate of low back pain was (87. 0 ± 2. 0)%,the average operation time was (99. 6 ± 16. 2) minutes,the average blood loss was (70. 5 ± 31. 5)mL,the average length of stay(ALOS) was (11. 2 ± 2. 6) days after sur-gery. Conclusion K-Rod pedicle dynamic fixation system in the treatment of multiple segmental lumbar degeneration can obtain satisfactory short-term clinical effect.