Little Agreement Between Preoperative Kellgren-Lawrence Classification and Intraoperative Outerbridge Score in Patients Undergoing Arthroscopic Partial Meniscectomy.

IF 4.4 1区 医学 Q1 ORTHOPEDICS
C Christian D Rich, Logan Huff, Natalie A Lowenstein, Jillian L Mazzocca, Cale A Jacobs, Elizabeth G Matzkin
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引用次数: 0

Abstract

Purpose: To determine whether there is a correlation between preoperative Kellgren-Lawrence (KL) grade and intraoperative Outerbridge score, which are both tools used to assess knee osteoarthritis.

Methods: Patients undergoing knee arthroscopy and partial meniscectomy procedures with or without chondroplasty between August 2012 and October 2020 were enrolled in this study. Preoperative KL grades were recorded, and Outerbridge scores were obtained intraoperatively for each of the 6 joint surfaces (medial and lateral femoral condyle, medial and lateral tibial plateau, patella, and trochlea). The total Outerbridge score was then calculated by summing the grades for the 6 joint surfaces. The level of agreement between KL grade and Outerbridge score was assessed using Cohen weighted κ values, with 0 to 0.20 indicating no or slight agreement; 0.21 to 0.40, fair agreement; 0.41 to 0.60, moderate agreement; 0.61 to 0.80, substantial agreement; and greater than 0.80, almost perfect agreement.

Results: A total of 468 patients were included in this study (271 women [58%] and 197 men [42%]; mean age, 49 years [standard deviation, 10.35 years]; mean body mass index, 30.5 [standard deviation, 7]). There was slight agreement between KL grade and total Outerbridge score (κ = 0.05), as well as between KL grade and Outerbridge score for individual joint surfaces (κ range, 0.04-0.20). Similar results were found when we individually analyzed female patients (κ range, 0.06-0.22) and male patients (κ range, 0-0.17) and when we compared patients younger than 40 years (κ range, 0.02-0.19) with those aged 40 years or older (κ range, 0.04-0.15).

Conclusions: There is little agreement between the radiographic KL grade and the intraoperative Outerbridge classification system. Thus, the association between radiographic assessments and cartilage health may need to be reconsidered owing to this lack of correlation.

Level of evidence: Level IV, retrospective therapeutic case series.

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来源期刊
CiteScore
9.30
自引率
17.00%
发文量
555
审稿时长
58 days
期刊介绍: Nowhere is minimally invasive surgery explained better than in Arthroscopy, the leading peer-reviewed journal in the field. Every issue enables you to put into perspective the usefulness of the various emerging arthroscopic techniques. The advantages and disadvantages of these methods -- along with their applications in various situations -- are discussed in relation to their efficiency, efficacy and cost benefit. As a special incentive, paid subscribers also receive access to the journal expanded website.
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