Effectiveness of dynamic fixation Coflex treatment for degenerative lumbar spinal stenosis

Jing, Xi-Wei; Cui, Ping; He, Xin; Hao, Dingjun; Li, Shujing

doi:10.3892/etm.2017.5508

Cited by 9 publications

(9 citation statements)

References 16 publications

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“…Coflex system is considered as a safe and effective alternative to traditional fusion [11][12][13]. It was designed to open the spinous process and limit the spine hyperextension [14].…”

Section: Discussionmentioning

confidence: 99%

Coflex interspinous process dynamic stabilization for lumbar spinal stenosis: Long-term follow-up

Wei

Zhu

et al. 2020

Journal of Clinical Neuroscience

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Objective: To evaluate the long-term efficacy of Coflex dynamic stabilization device in the treatment of lumbar spinal stenosis. Methods: The clinical and imaging data of 73 patients undergoing Coflex dynamic stabilization surgery from July 2008 to June 2012 were retrospectively analyzed. All patients had a minimum of 8 years of follow-up. Clinical data were used to assess the clinical efficacy, and radiographic parameters were measured for evaluation of ASD. Results: 56 Patients were followed up for 107.6 ± 13.3 months. The visual analogue scale of pain (VAS), Owestry disability index (ODI) and Japanese Orthopedic Association Scores (JOA) improved significantly after surgery. At 6 months after surgery and the last follow-up, lumbar range of motion (ROM) was significantly lower than that before surgery (P < 0.001). ROM was slightly increased at the last follow-up compared with that 6 months after operation (P > 0.05). ROM of adjacent segments increased at 6 months and at the last follow-up compared with that before surgery (P > 0.05). At 6 months after surgery, intervertebral space height (ISH) and intervertebral foramen height (IFH) of implanted segment was significantly higher than that before surgery (P < 0.05). At the last follow-up, there was a decrease in ISH and IFH (P > 0.05). During the follow-up period, a total of 11 patients (19.6%) experienced complications and 6 patients (10.7%) underwent secondary surgery. Conclusion: Coflex interspinous process dynamic stabilization is effective in the long-term treatment of lumbar spinal stenosis, the ISH and IFH of implanted segment could be increased in a short period of time.

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“…Coflex system is considered as a safe and effective alternative to traditional fusion [11][12][13]. It was designed to open the spinous process and limit the spine hyperextension [14].…”

Section: Discussionmentioning

confidence: 99%

Coflex interspinous process dynamic stabilization for lumbar spinal stenosis: Long-term follow-up

Wei

Zhu

et al. 2020

Journal of Clinical Neuroscience

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“…The Co ex system is considered a safe and effective alternative to traditional fusion [11][12][13] . It was designed to open the spinous process and limit the spine hyperextension [14] .…”

Section: Discussionmentioning

confidence: 99%

“…Compared with fusion, Co ex implantation has the advantages of less intraoperative blood loss and shorter operation time, which greatly shortens the patient's recovery period [13,16] . Our study shows that the VAS, ODI, and JOA scores were signi cantly improved at 6 months after surgery and at the last follow-up, and the long-term e cacy was stable and the clinical effect was satisfactory.…”

Section: Discussionmentioning

confidence: 99%

Coflex Interspinous Process Dynamic Stabilization for Lumbar Spinal Stenosis: Long-term Follow-up

Wei

Zhu

et al. 2020

Preprint

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[Objective]To evaluate the long-term efficacy of Coflex interspinous process dynamic stabilization device in the treatment of lumbar spinal stenosis.[Methods]The clinical and imaging data of 73 patients undergoing Coflex interspinous process dynamic stabilization surgery from July 2008 to June 2012 were retrospectively analyzed. Clinical data include: visual analogue scale of pain (VAS), Owestry disability index(ODI) and Japanese Orthopedic Association Scores(JOA) of preoperation, 6 months after surgery, and last follow-up; complications; reoperation rates and incidence of adjacent segment degeneration(ASD). Imaging data including: lumbar range of motion(ROM), intervertebral space height(ISH) and intervertebral foramen height (IFH) of operative and adjacent segment at preoperative, 6 months after operation and the last follow-up.[Results]56 patients were followed up. The follow-up time was 107.6 ± 13.3 months, the operation time was 10.0 ± 3.1 minutes, the intraoperative blood loss was 153.9 ± 80.6 ml, and the hospitalization time was 10.2 ± 3.2 days. The VAS, ODI and JOA scores improved significantly after surgery. At 6 months after surgery and the last follow-up, ROM was significantly lower than that before surgery with statistical significance (P < 0.001). ROM was slightly increased at the last follow-up compared with that 6 months after operation, but the difference was not statistically significant (P > 0.05). The ROM of adjacent segments increased at 6 months and at the last follow-up compared with that before surgery, but the difference was not statistically significant (P > 0.05). At 6 months after surgery, ISH and IFH of implanted segment was significantly higher than that before surgery, and the difference was statistically significant (P < 0.05). At the last follow-up, there was a decrease in ISH and IFH, with no statistical difference compared with that before the operation. During the follow-up period, a total of 11 patients (19.6%) experienced complications and 6 patients (10.7%) underwent secondary surgery.[Conclusion]Coflex interspinous process dynamic stabilization is effective in the treatment of lumbar spinal stenosis in the long term. The surgical segment retains a small range of motion. The incidence of complications and reoperation is low. However, the ISH and IFH of implanted segment can only be maintained for a short period of time.

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“…Central lumbar spinal stenosis (CLSS) is the most common spinal disorder in patients aged 60 years and above [1]. The clinical manifestation of CLSS is chronic pain with a variable clinical manifestation that affects normal work and daily life and limits activity [2].…”

Section: Introductionmentioning

confidence: 99%

“…The initial pain is not severe. It is combined with muscular discomfort that can be improved by rest or changing position [1,5]. Final pathologies underlying pain in CLSS patients are neurological damage to the spinal nerve compression and cauda equina [6].…”

Section: Introductionmentioning

confidence: 99%

Usefulness of the Inferior Articular Process’s Cross-Sectional Area as a Morphological Parameter for Predicting Central Lumbar Spinal Stenosis

Lee

Lim

et al. 2020

JCM

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Hypertrophy of facet joints is associated with a high risk of central lumbar spinal stenosis (CLSS). However, no research has reported the effect of inferior articular process hypertrophy in CLSS. We hypothesize that the inferior articular process’s cross-sectional area (IAPCSA) is larger in patients with CLSS compared to those without CLSS. Data on IAPCSA were obtained from 116 patients with CLSS. A total of 102 control subjects underwent lumbar spine magnetic resonance imaging (LS-MRI) as part of a routine medical examination. Axial T1-weighted images were obtained from the two groups. Using an imaging analysis system, we investigated the cross-sectional area of the inferior articular process. The average IAPCSA was 70.97 ± 13.02 mm2 in control subjects and 88.77 ± 18.52 mm2 in patients with CLSS. CLSS subjects had significantly greater levels of IAPCSA (p < 0.001) than controls. A receiver operating characteristic (ROC) curve was plotted to determine the validity of IAPCSA as a predictor of CLSS. The most suitable cut-off point of IAPCSA for predicting CLSS was 75.88 mm2, with a sensitivity of 71.6%, a specificity of 68.6%, and an area under the curve (AUC) of 0.78 (95% CI: 0.72–0.84). Greater IAPCSA levels were associated with a higher incidence of CLSS. These results demonstrate that IAPCSA is a useful morphological predictor in the evaluation of CLSS.

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Effectiveness of dynamic fixation Coflex treatment for degenerative lumbar spinal stenosis

Cited by 9 publications

References 16 publications

Coflex interspinous process dynamic stabilization for lumbar spinal stenosis: Long-term follow-up

Coflex interspinous process dynamic stabilization for lumbar spinal stenosis: Long-term follow-up

Coflex Interspinous Process Dynamic Stabilization for Lumbar Spinal Stenosis: Long-term Follow-up

Usefulness of the Inferior Articular Process’s Cross-Sectional Area as a Morphological Parameter for Predicting Central Lumbar Spinal Stenosis

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