Reproducibility and reliability of the outerbridge classification for grading chondral lesions of the knee arthroscopically
- PMID: 12531763
- DOI: 10.1177/03635465030310012601
Reproducibility and reliability of the outerbridge classification for grading chondral lesions of the knee arthroscopically
Abstract
Background: Few studies have investigated the accuracy and reproducibility of the Outerbridge classification system for classification of chondral damage in the knee.
Hypothesis: Arthroscopically assigned Outerbridge grades are accurate, reliable, and reproducible.
Study design: Cadaver study.
Methods: Six cadaveric knees underwent diagnostic arthroscopy, which was videotaped. An arthrotomy was then performed and the arthroscopically identified lesions were measured with calipers. Nine orthopaedic surgeons reviewed each video and graded each chondral lesion two separate times. Accuracy of observations was calculated based on the percentage of agreement between the grades determined during arthroscopy and arthrotomy.
Results: The overall accuracy was 68% but varied by location. The kappa coefficient between the two scores was 0.602; the arthroscopy grade was higher than the arthrotomy grade 63% of the time. The intraobserver and interobserver kappa coefficients were 0.80 and 0.52, respectively. The mean interobserver kappa between the two physicians in practice 5 years or more was 0.72, compared with 0.50 for physicians in practice less than 5 years.
Conclusions: The Outerbridge classification was moderately accurate when used to grade chondral lesions arthroscopically.
Clinical relevance: Orthopaedic surgeons can accurately grade chondral lesions of the knee with the Outerbridge classification, regardless of their level of experience.
Copyright 2003 American Orthopaedic Society for Sports Medicine
Similar articles
-
Reliability and Accuracy of the Outerbridge Classification in Staging of Cartilage Defects.Orthop Surg. 2024 May;16(5):1187-1195. doi: 10.1111/os.14016. Epub 2024 Mar 15. Orthop Surg. 2024. PMID: 38488230 Free PMC article.
-
Reliability of 3 Different Arthroscopic Classifications for Chondral Damage of the Acetabulum.Arthroscopy. 2015 Aug;31(8):1492-6. doi: 10.1016/j.arthro.2015.02.029. Epub 2015 Apr 15. Arthroscopy. 2015. PMID: 25887376
-
Chondral lesions of the knee: A new localization method and correlation with associated pathology.Arthroscopy. 2001 May;17(5):481-90. doi: 10.1053/jars.2001.19977. Arthroscopy. 2001. PMID: 11337714
-
Validation of the classification system for acetabular chondral lesions identified at arthroscopy in patients with femoroacetabular impingement.J Bone Joint Surg Br. 2011 Mar;93(3):332-6. doi: 10.1302/0301-620X.93B3.25322. J Bone Joint Surg Br. 2011. PMID: 21357954 Review.
-
Interobserver reliability of the International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine (ISAKOS) classification of meniscal tears.Am J Sports Med. 2011 May;39(5):926-32. doi: 10.1177/0363546511400533. Epub 2011 Mar 16. Am J Sports Med. 2011. PMID: 21411745
Cited by
-
Current Evidence Using Pulsed Electromagnetic Fields in Osteoarthritis: A Systematic Review.J Clin Med. 2024 Mar 28;13(7):1959. doi: 10.3390/jcm13071959. J Clin Med. 2024. PMID: 38610722 Free PMC article. Review.
-
Reliability and Accuracy of the Outerbridge Classification in Staging of Cartilage Defects.Orthop Surg. 2024 May;16(5):1187-1195. doi: 10.1111/os.14016. Epub 2024 Mar 15. Orthop Surg. 2024. PMID: 38488230 Free PMC article.
-
The relevance of knee arthroscopy photographs in medicolegal proceedings.Int Orthop. 2024 May;48(5):1133-1138. doi: 10.1007/s00264-024-06129-0. Epub 2024 Mar 2. Int Orthop. 2024. PMID: 38430224
-
Spectroscopic Quantitative Measurement of the Cartilage Surface using Arthroscopy Correlates with a Conventional Macroscopic Grading System.Arthrosc Sports Med Rehabil. 2022 Dec 28;5(1):e233-e238. doi: 10.1016/j.asmr.2022.11.019. eCollection 2023 Feb. Arthrosc Sports Med Rehabil. 2022. PMID: 36866322 Free PMC article.
-
The anterior cruciate ligament injury severity scale (ACLISS) is an effective tool to document and categorize the magnitude of associated tissue damage in knees after primary ACL injury and reconstruction.Knee Surg Sports Traumatol Arthrosc. 2023 Jul;31(7):2983-2997. doi: 10.1007/s00167-023-07311-4. Epub 2023 Jan 11. Knee Surg Sports Traumatol Arthrosc. 2023. PMID: 36629888
MeSH terms
LinkOut - more resources
Full Text Sources
Medical