Posterior Microdecompression and Subsequent Endoprosthetics of the Interspinous and Yellow Ligaments of Lumbar Spine with the Coflex Dynamic Implant

A.V. Baskov, A.I. Drakin, O.N. Uchurov, V.A. Baskov

Russian Medical Academy of Postgraduate Education, Moscow, Russia
Central Clinical Hospital N1 of the Russian Railways Open Joint-Stock Company, Moscow, Russia


The study goal has been estimating potentialities and results of surgical treatment of lumbar spine degenerative lesions with the Coflex interspinous fixing device (Paradigm Spine company).

Material and Methods. The Coflex interspinous dynamic implant was applied in 59 cases, operated for degenerative lesion of lumbar spine. There were 23 males and 36 females. Their mean age was 55 years. Interspinous stabilization of one and two segments was made in 56 and 2 cases, respectively. The total number of stabilizers was 62.

Results. A mean period of stay in hospital was 6 days. According to the Visual-Analog Scale intensity of pain syndrome before and 24 months after operation was 8.6±0.6 and 1.4±0.4, respectively. Severity of functional activity disorders, estimated on the basis of ODI before and 24 months after operation, was 57.4% (44.2-64.2%) and 16.6% (12.2-18.8%) (p<0.05). There were no rentgenologic signs of bone tissue resorption in a zone of a contact with implants, their migration, instability in an operated segment, disease relapses and complications. Excellent, good and satisfactory results were obtained in 52.5%, 30.5% and 17% of cases, respectively. There were no poor outcomes. In a year all the cases returned to their work, which was a sign of good social rehabilitation.

Conclusion. The results of endoprosthetics of the interspinous and yellow ligaments with the Coflex dynamic implant, performed after posterior microdecompression, demonstrated its good efficacy, as well as absence of complications and poor outcomes.