Posterior fusion compared with posterior interbody fusion in segmental spinal fixation for adult spondylolisthesis

Abstract

<jats:sec> <jats:title>Object</jats:title> <jats:p>Clinical and radiographic results in 30 consecutive patients who underwent posterior lumbar fixation and posterior facet joint or posterior interbody fusion for Meyerding Grade II/III spondylolisthesis were assessed: 1) to address the suitability of a dynamic stabilization; and 2) to investigate whether there are differences in terms of clinical and functional results and biomechanical properties between these two types of arthrodesis.</jats:p></jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>Between June 1998 and April 2000, 16 patients underwent posterior interfacet fusion and implantation of the SOCON-SRI system. In 14 patients posterior lumbar interbody fusion (PLIF) and placement of the same system were performed. Clinical, economic, functional, and radiographic data were recorded pre- and postoperatively.</jats:p> <jats:p>The average changes in the Prolo Scale economic and functional scores were 1.25 and 1.62, respectively, in patients who underwent posterior fusion; the average measured preoperative vertebral slippage was 47.8% (range 30–65%), and postoperatively it was 18.5% (range 15–25%). In patients in whom PLIF was performed, the average changes in economic and functional score were 1.21 and 1.36, respectively, and the average preoperative vertebral slippage was 43.5% (range 30–55%) compared with 20% (range 15–25%) postoperatively.</jats:p></jats:sec> <jats:sec> <jats:title>Conclusions</jats:title> <jats:p>The use of a segmental pedicle screw fixation with the SOCON-SRI system successfully combines the goal of solid fusion with the requirements of nerve root decompression. When the two fusion techniques were compared, an overall superior reliability and resistance of the systems was associated with the PLIF procedure (p = 0.04) but clinical outcomes did not differ greatly (p ≥ 0.05).</jats:p></jats:sec>

Instrumented Posterior Lumbar Interbody Fusion in Adult Spondylolisthesis

“…Once the back pain and neuroclaudication improved, our patients had good functional outcomes. The average reported fusion rate ranges from 90% to 95.7% in patients with noncage PLIF [11,21] and from 90% to 100% in patients with cage PLIF [1,3,5,20,25,26,39,40,49]. Our fusion result was comparable to those of other published studies (Table 6).…”

Posterior lumbar interbody fusion with instrumented posterolateral fusion in adult spondylolisthesis: description and association of clinico-surgical variables with prognosis in a series of 36 cases

“…Our review of the literature obtained variable results in this sense, finding follow ups that ranged between 3 months and 10 years. [50][51][52][53][54][55][56] With the objective of not producing any lost cases due to a lack of follow up in consultations (that the patient decided not to attend controls after postsurgical clinical improvement), and taking into account, on the one hand, the phases and physiological human bony consolidation times (maximum between 4 and 8 weeks), and on the other hand, our previous experience in the follow up of patients who underwent other types of interventions such as those related with vertebral fractures, we established a maximum follow up of 12 months, leaving open the option of lengthening the follow up depending on the results. The results as regards the clinical and fusion situation at one year of follow up were satisfactory and no patient needed to return to the operating room for pseudarthrosis.…”

Cespace: sistema de fusión intersomática cervical: Estudio preliminar en 104 casos (120 implantes)

“…Por analogía, algunas revisiones han indicado algunos criterios de fusión, entre los que se encuentran los siguientes 18 : ausencia de movimiento en radiografías en flexión y extensión; ausencia de halo alrededor del implante. Cohesión completa y desaparición de la interfase entre platillo e implante; presencia bilateral de hueso trabecular continuo entre los segmentos fusionados.…”