J Korean Soc Spine Surg.  2013 Sep;20(3):99-106. 10.4184/jkss.2013.20.3.99.

The Comparison of Clinical and Radiologic Results Classified by Translation Type and Fusion Method in the Isthmic Spondylolisthesis

• Lee KY
• Han DH
• Seo JY

• KMID: 1487975
• DOI: http://doi.org/10.4184/jkss.2013.20.3.99

Abstract

STUDY DESIGN: A retrospective study.
OBJECTIVES
To examine the radiologic and clinical results of patients classified as excessive translation and excessive angulation, treated by posterolateral fusion only, or posterolateral fusion with posterior lumbar interbody fusion in isthmic spondylolisthesis. SUMMARY OF LITERATURE REVIEW: Isthmic spondylolisthesis is usually treated by PLF only or PLF with PLIF. But it is not reported the clinical and radiologic results classified by translation type.
MATERIALS AND METHODS
Patients who had received surgery for spondylolisthesis between January 2005 to January 2010, there were 56 for whom follow-up observations were possible for 2 years. According to the fusion methods and preoperative flexion-extension simple radiograph, we classified as excessive translation and excessive angulation by segmental instability and as PLF and PLIF by surgical methods. We examine the clinical results(Visual Analogue Scale, Oswestry Distability Index, operation time, blood loss, complication rate) and the radiologic results(reduction rate of slippage, change of segmental angle, reduction ratio of disc height, bone union).
RESULTS
In radiologic results, excessive angulation(group II) did not show significant difference from excessive translation(group I) in terms of reduction rate of slippage, change of segmental angle, reduction ratio of disc height, bone union. But we found excessive translation-PLIF(group I-B) was better than excessive translation-PLF(group I-A) and excessive angulation-PLIF(group II-B) was better than excessive angulation-PLF(II-A) in terms of reduction ratio of disc height(P<0.05). In clinical results, both sides group did not show significant difference in operation time, blood loss, complication rate.
CONCLUSIONS
In spondylolisthesis patients, excessive translation group(I) and excessive angulation group(II) did not show significant difference in radiologic results and clinical results. But both sides group showed the PLF with PLIF was better than the PLF only in terms of reduction ratio of disc height.

Keyword

Spondylolisthesis; Translation type; Posterolateral fusion; Posterior lumbar interbody fusion

MeSH Terms

Follow-Up Studies
Humans
Retrospective Studies
Spondylolisthesis

Figure

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  Fig 1. (A, B) The flexion-extension dynamic lateral radiograph of a 77 years old woman shows 9mm change of slippage. (C, D) Preoperative and postoperative radiograph demonstrated correction of deformity. (E) Last followup radiograph demonstrated loss of correction.

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  Fig. 2. (A, B) The flexion-extension dynamic lateral radiograph of a 71 years old woman shows 10° change of angulation. (C, D) Preoperative and postoperative radiograph demonstrated correction of deformity. (E) Last followup radiograph demonstrated loss of disc height.

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  Fig. 3. (A, B) The flexion-extension dynamic lateral radiograph of a 63 years old woman shows 11° change of angulation. (C, D) Preoperative and postoperative radiograph demonstrated correction of deformity. (E) Last followup radiograph demonstrated loss of angulation.

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  Fig. 4. (A, B) The flexion-extension dynamic lateral radiograph of a 49 years old woman shows 11° change of angulation. (C, D) Preoperative and postoperative radiograph demonstrated correction of deformity. (E) Last followup radiograph shows cage pull out.

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