COMPARISON OF INTRAOBSERVER AND INTEROBSERVER RELIABILITY BETWEEN THE LENKE AND KING CLASSIFICATION SYSTEMS FOR ADOLESCENT IDIOPATHIC SCOLIOSIS

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SADAT S.M.M.; ZAHTAB M.J.; NIKNAFS F.

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Journal: Journal of Medical Council of Iran Year:2007 | Volume:25 | Issue:1 Page(s): 73-80

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Title

COMPARISON OF INTRAOBSERVER AND INTEROBSERVER RELIABILITY BETWEEN THE LENKE AND KING CLASSIFICATION SYSTEMS FOR ADOLESCENT IDIOPATHIC SCOLIOSIS

Author(s)

SADAT S.M.M. | ZAHTAB M.J. | NIKNAFS F. | Issue Writer Certificate

Keywords

IDIOPATHIC SCOLIOSISQ3

KING CLASSIFICATIONQ3

LENKE CLASSIFICATIONQ3

INTER AND INTRAOBSERVER RELIABILITYQ3

Abstract

Background: In spite of many advantages in LENKE CLASSIFICATION of adolescent IDIOPATHIC SCOLIOSIS, the latest study of Richards et al showed that the KING CLASSIFICATION is better than had been reported recently and the LENKE CLASSIFICATION system of adolescent IDIOPATHIC SCOLIOSIS is less reliable than previously reported.Methods: In this study, we performed a multi-surgeon comparison of these two classification systems. After teaching and discussing all available data of these classification systems with four spine surgeons, a pilot classification was performed. Then, they independently evaluated preoperative radiographs (standing posteroanterior, lateral, and two supine side-bending views) of 99 patients with adolescent IDIOPATHIC SCOLIOSIS. The results were determined by calculating the average percentage of intraobserver and interobserver agreement. Reliability was quantified using kappa statistics.Findings: The KING CLASSIFICATION demonstrated good intraobserver and interobserver reliability, with an intraobserver agreement of 85.8% (kappa coefficient, 0.80). Interobserver percentage of agreement averaged 80.8% (kappa coefficient, 0.74). The complete LENKE CLASSIFICATION, combining curve type, lumbar modifier, and sagittal thoracic modifier, demonstrated good reliability for both intraobserver and interobserver measurements. The intraobserver percentage of agreement averaged 85.8% (kappa coefficient, 0.82). The interobserver percentage of agreement averaged 80.8% (kappa coefficient, 0.77).Conclusion: In this study, with each investigator performing the radiographic measurements, the King and LENKE CLASSIFICATIONs were almost similar (the LENKE CLASSIFICATION had slightly better results). Such better results might be due to more training of this complex classification system. So, because of greater coverage of IDIOPATHIC SCOLIOSIS curve and usefulness of LENKE CLASSIFICATION system, we prefer using this classification system in our center.

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APA: Copy

SADAT, S.M.M., ZAHTAB, M.J., & NIKNAFS, F.. (2007). COMPARISON OF INTRAOBSERVER AND INTEROBSERVER RELIABILITY BETWEEN THE LENKE AND KING CLASSIFICATION SYSTEMS FOR ADOLESCENT IDIOPATHIC SCOLIOSIS. JOURNAL OF MEDICAL COUNCIL OF I.R.I., 25(1), 73-80. SID. https://sid.ir/paper/41129/en

Vancouver: Copy

SADAT S.M.M., ZAHTAB M.J., NIKNAFS F.. COMPARISON OF INTRAOBSERVER AND INTEROBSERVER RELIABILITY BETWEEN THE LENKE AND KING CLASSIFICATION SYSTEMS FOR ADOLESCENT IDIOPATHIC SCOLIOSIS. JOURNAL OF MEDICAL COUNCIL OF I.R.I.[Internet]. 2007;25(1):73-80. Available from: https://sid.ir/paper/41129/en

IEEE: Copy

S.M.M. SADAT, M.J. ZAHTAB, and F. NIKNAFS, “COMPARISON OF INTRAOBSERVER AND INTEROBSERVER RELIABILITY BETWEEN THE LENKE AND KING CLASSIFICATION SYSTEMS FOR ADOLESCENT IDIOPATHIC SCOLIOSIS,” JOURNAL OF MEDICAL COUNCIL OF I.R.I., vol. 25, no. 1, pp. 73–80, 2007, [Online]. Available: https://sid.ir/paper/41129/en

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