These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Validation and Reliability Analysis of the Spinal Deformity Study Group Classification for L5-S1 Lumbar Spondylolisthesis.
    Author: Bao H, Yan P, Zhu W, Bao M, Li Y, Zhang Z, Qiu Y, Zhu F.
    Journal: Spine (Phila Pa 1976); 2015 Nov; 40(21):E1150-4. PubMed ID: 26261917.
    Abstract:
    STUDY DESIGN: An intra- and interobserver reliability study. OBJECTIVE: To assess the intra- and interobserver reliability of the Spinal Deformity Study Group (SDSG) system for classifying adolescent and adult L5-S1 spondylolisthesis. SUMMARY OF BACKGROUND DATA: Reliability of the SDSG classification has only been previously validated in adolescent patients as performed by the SDSG study group investigators. METHODS: A total of 80 patients with L5-S1 spondylolisthesis were included in this study. Only dysplastic and isthmic spondylolisthesis were included in this study. Long-cassette standing lateral radiographs of the spine and pelvis were obtained. All 80 cases were classified according to the SDSG classification by four observers. After a 2-week interval, the same classification was independently repeated by each observer with the cases in a different randomly assigned order. The Fleiss' κ coefficient was calculated to test the intra- and interobserver reliabilities of the SDSG classification. RESULTS: The present study included all six types of SDSG classification. Overall intra- and interobserver agreements were 86.6% (κ: 0.830) and 73.3% (κ: 0.648), respectively. The intra- and interobserver agreements and repeatability associated with slip grade were 89.7% (κ: 0.824) and 87.7% (κ: 0.721), respectively. Regarding sacropelvic and spinal balance, intra- and interobserver agreements and repeatability were 83.7% (κ: 0.735) and 77.5% (κ: 0.602) for low-grade slips, and 90.75% (κ: 0.883) and 90.4% (κ: 0.851) for high-grade slips, respectively. CONCLUSION: Substantial intra- and interobserver reliability was found for the SDSG classification in L5-S1 lumbar spondylolisthesis. SDSG classification system is a simple and clear classification scheme incorporating spinopelvic parameters, which provides significant clinical utility. LEVEL OF EVIDENCE: 3.
    [Abstract] [Full Text] [Related] [New Search]